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https://github.com/versity/scoutfs.git
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Merge pull request #237 from versity/auke/hole_punch_ioctl_test
Punch Offline Ioctl, tests, scoutfs subcmd.
This commit is contained in:
Zach Brown
GitHub
@@ -1517,6 +1517,101 @@ out:
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return ret;
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}
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/*
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* Punch holes in offline extents. This is a very specific tool that
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* only does one job: it converts extents from offline to sparse. It
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* returns an error if it encounters an extent that isn't offline or has
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* a block mapping. It ignores i_size completely; it does not test it,
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* and does not update it.
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*
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* The caller has the inode locked in the vfs and performed basic sanity
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* checks. We manage transactions and the extent_sem which is ordered
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* inside the transaction.
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*/
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int scoutfs_data_punch_offline(struct inode *inode, u64 iblock, u64 last, u64 data_version,
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struct scoutfs_lock *lock)
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{
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struct scoutfs_inode_info *si = SCOUTFS_I(inode);
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struct super_block *sb = inode->i_sb;
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struct data_ext_args args = {
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.ino = scoutfs_ino(inode),
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.inode = inode,
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.lock = lock,
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};
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struct scoutfs_extent ext;
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LIST_HEAD(ind_locks);
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int ret;
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int i;
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if (WARN_ON_ONCE(iblock > last)) {
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ret = -EINVAL;
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goto out;
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}
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/* idiomatic to call start,last with 0,~0, clamp last to last possible */
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last = min(last, SCOUTFS_BLOCK_SM_MAX);
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ret = 0;
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while (iblock <= last) {
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ret = scoutfs_inode_index_lock_hold(inode, &ind_locks, true, false) ?:
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scoutfs_dirty_inode_item(inode, lock);
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if (ret < 0)
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break;
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down_write(&si->extent_sem);
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for (i = 0; i < 32 && (iblock <= last); i++) {
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ret = scoutfs_ext_next(sb, &data_ext_ops, &args, iblock, 1, &ext);
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if (ret == -ENOENT) {
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iblock = last + 1;
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ret = 0;
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break;
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}
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if (ret < 0)
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break;
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if (ext.start > last) {
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iblock = last + 1;
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break;
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}
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if (ext.map) {
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ret = -EINVAL;
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break;
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}
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if (ext.flags & SEF_OFFLINE) {
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if (iblock > ext.start) {
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ext.len -= iblock - ext.start;
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ext.start = iblock;
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}
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ext.len = min(ext.len, last - ext.start + 1);
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ext.flags &= ~SEF_OFFLINE;
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ret = scoutfs_ext_set(sb, &data_ext_ops, &args,
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ext.start, ext.len, ext.map, ext.flags);
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if (ret < 0)
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break;
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}
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iblock = ext.start + ext.len;
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}
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up_write(&si->extent_sem);
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scoutfs_update_inode_item(inode, lock, &ind_locks);
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scoutfs_release_trans(sb);
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scoutfs_inode_index_unlock(sb, &ind_locks);
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if (ret < 0)
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break;
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}
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out:
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return ret;
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}
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/*
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* This copies to userspace :/
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*/
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@@ -57,6 +57,8 @@ int scoutfs_data_init_offline_extent(struct inode *inode, u64 size,
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int scoutfs_data_move_blocks(struct inode *from, u64 from_off,
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u64 byte_len, struct inode *to, u64 to_off, bool to_stage,
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u64 data_version);
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int scoutfs_data_punch_offline(struct inode *inode, u64 iblock, u64 last, u64 data_version,
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struct scoutfs_lock *lock);
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int scoutfs_data_wait_check(struct inode *inode, loff_t pos, loff_t len,
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u8 sef, u8 op, struct scoutfs_data_wait *ow,
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@@ -1667,6 +1667,78 @@ out:
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return ret;
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}
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static long scoutfs_ioc_punch_offline(struct file *file, unsigned long arg)
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{
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struct inode *inode = file_inode(file);
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struct super_block *sb = inode->i_sb;
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struct scoutfs_ioctl_punch_offline __user *upo = (void __user *)arg;
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struct scoutfs_ioctl_punch_offline po;
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struct scoutfs_lock *lock = NULL;
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u64 iblock;
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u64 last;
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u64 tmp;
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int ret;
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if (copy_from_user(&po, upo, sizeof(po)))
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return -EFAULT;
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if (po.len == 0)
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return 0;
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if (check_add_overflow(po.offset, po.len - 1, &tmp) ||
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(po.offset & SCOUTFS_BLOCK_SM_MASK) ||
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(po.len & SCOUTFS_BLOCK_SM_MASK))
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return -EOVERFLOW;
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if (po.flags)
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return -EINVAL;
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ret = mnt_want_write_file(file);
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if (ret < 0)
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return ret;
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inode_lock(inode);
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ret = scoutfs_lock_inode(sb, SCOUTFS_LOCK_WRITE,
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SCOUTFS_LKF_REFRESH_INODE, inode, &lock);
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if (ret)
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goto out;
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if (!S_ISREG(inode->i_mode)) {
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ret = -EINVAL;
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goto out;
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}
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if (!(file->f_mode & FMODE_WRITE)) {
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ret = -EINVAL;
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goto out;
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}
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ret = inode_permission(KC_VFS_INIT_NS inode, MAY_WRITE);
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if (ret < 0)
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goto out;
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if (scoutfs_inode_data_version(inode) != po.data_version) {
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ret = -ESTALE;
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goto out;
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}
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if ((ret = scoutfs_inode_check_retention(inode)))
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goto out;
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iblock = po.offset >> SCOUTFS_BLOCK_SM_SHIFT;
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last = (po.offset + po.len - 1) >> SCOUTFS_BLOCK_SM_SHIFT;
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ret = scoutfs_data_punch_offline(inode, iblock, last, po.data_version, lock);
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out:
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scoutfs_unlock(sb, lock, SCOUTFS_LOCK_WRITE);
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inode_unlock(inode);
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mnt_drop_write_file(file);
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return ret;
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}
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long scoutfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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switch (cmd) {
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@@ -1716,6 +1788,8 @@ long scoutfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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return scoutfs_ioc_mod_quota_rule(file, arg, false);
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case SCOUTFS_IOC_READ_XATTR_INDEX:
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return scoutfs_ioc_read_xattr_index(file, arg);
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case SCOUTFS_IOC_PUNCH_OFFLINE:
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return scoutfs_ioc_punch_offline(file, arg);
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}
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return -ENOTTY;
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@@ -848,4 +848,32 @@ struct scoutfs_ioctl_read_xattr_index {
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#define SCOUTFS_IOC_READ_XATTR_INDEX \
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_IOR(SCOUTFS_IOCTL_MAGIC, 23, struct scoutfs_ioctl_read_xattr_index)
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/*
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* This is a limited and specific version of hole punching. It's an
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* archive layer operation that only converts unmapped offline extents
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* into sparse extents. It is intended to be used when restoring sparse
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* files after the initial creation set the entire file size offline.
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*
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* The offset and len fields are in units of bytes and must be aligned
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* to the small (4KiB) block size. All regions of offline extents
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* covered by the region will be converted into sparse online extents,
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* including regions that straddle the boundaries of the region. Any
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* existing sparse extents in the region are ignored.
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*
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* The data_version must match the inode or EINVAL is returned. The
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* data_version is not modified by this operation.
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*
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* EINVAL is returned if any mapped extents are found in the region. If
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* an error is returned then partial progress may have been made.
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*/
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struct scoutfs_ioctl_punch_offline {
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__u64 offset;
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__u64 len;
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__u64 data_version;
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__u64 flags;
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};
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#define SCOUTFS_IOC_PUNCH_OFFLINE \
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_IOW(SCOUTFS_IOCTL_MAGIC, 24, struct scoutfs_ioctl_punch_offline)
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#endif
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@@ -0,0 +1,460 @@
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== missing options should fail ==
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punch-offline: must provide offset
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Try `punch-offline --help' or `punch-offline --usage' for more information.
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punch-offline: must provide length
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Try `punch-offline --help' or `punch-offline --usage' for more information.
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punch-offline: must provide data_version
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Try `punch-offline --help' or `punch-offline --usage' for more information.
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== can't hole punch dir or special ==
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failed to open '/mnt/test.0/test/punch-offline/dir': Is a directory (21)
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scoutfs: punch-offline failed: Is a directory (21)
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== punching an empty file does nothing ==
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== punch outside of i_size does nothing ==
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== can't hole punch online extent ==
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0: offset: 0 length: 4096 flags: ..L
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extents: 1
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punch_offline ioctl failed: Invalid argument (22)
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scoutfs: punch-offline failed: Invalid argument (22)
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0: offset: 0 length: 4096 flags: ..L
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extents: 1
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== can't hole punch unwritten extent ==
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0: offset: 0 length: 12288 flags: .UL
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extents: 1
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punch_offline ioctl failed: Invalid argument (22)
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scoutfs: punch-offline failed: Invalid argument (22)
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0: offset: 0 length: 12288 flags: .UL
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extents: 1
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== hole punch offline extent ==
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0: offset: 0 length: 12288 flags: O.L
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extents: 1
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0: offset: 0 length: 4096 flags: O..
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1: offset: 8192 length: 4096 flags: O.L
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extents: 2
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== can't hole punch non-aligned bsz offset or len ==
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0: offset: 0 length: 12288 flags: O.L
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extents: 1
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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punch_offline ioctl failed: Value too large for defined data type (75)
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scoutfs: punch-offline failed: Value too large for defined data type (75)
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0: offset: 0 length: 12288 flags: O.L
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extents: 1
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== can't hole punch mismatched data_version ==
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0: offset: 0 length: 12288 flags: O.L
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extents: 1
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punch_offline ioctl failed: Stale file handle (116)
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scoutfs: punch-offline failed: Stale file handle (116)
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punch_offline ioctl failed: Stale file handle (116)
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scoutfs: punch-offline failed: Stale file handle (116)
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punch_offline ioctl failed: Stale file handle (116)
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scoutfs: punch-offline failed: Stale file handle (116)
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0: offset: 0 length: 12288 flags: O.L
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extents: 1
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== Punch hole crossing multiple extents ==
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0: offset: 0 length: 7 flags: O.L
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extents: 1
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0: offset: 0 length: 1 flags: O..
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1: offset: 2 length: 1 flags: O..
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2: offset: 4 length: 1 flags: O..
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3: offset: 6 length: 1 flags: O.L
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extents: 4
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0: offset: 0 length: 1 flags: O..
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1: offset: 6 length: 1 flags: O.L
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extents: 2
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== punch hole starting at a hole ==
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0: offset: 0 length: 7 flags: O.L
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extents: 1
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0: offset: 0 length: 1 flags: O..
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1: offset: 2 length: 1 flags: O..
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2: offset: 4 length: 1 flags: O..
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3: offset: 6 length: 1 flags: O.L
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extents: 4
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0: offset: 0 length: 1 flags: O..
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1: offset: 6 length: 1 flags: O.L
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extents: 2
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== large punch ==
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0: offset: 0 length: 1572864 flags: O.L
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extents: 1
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0: offset: 0 length: 134123 flags: O..
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1: offset: 202466 length: 264807 flags: O..
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2: offset: 535616 length: 199007 flags: O..
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3: offset: 802966 length: 769898 flags: O.L
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extents: 4
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== overlapping punches with lots of extents ==
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0: offset: 0 length: 4194304 flags: O.L
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extents: 1
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extents: 512
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extents: 505
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extents: 378
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extents: 252
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0: offset: 0 length: 4096 flags: O..
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1: offset: 8192 length: 4096 flags: O..
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2: offset: 32768 length: 4096 flags: O..
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3: offset: 40960 length: 4096 flags: O..
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4: offset: 65536 length: 4096 flags: O..
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5: offset: 73728 length: 4096 flags: O..
|
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6: offset: 98304 length: 4096 flags: O..
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7: offset: 106496 length: 4096 flags: O..
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8: offset: 196608 length: 4096 flags: O..
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9: offset: 204800 length: 4096 flags: O..
|
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10: offset: 229376 length: 4096 flags: O..
|
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11: offset: 237568 length: 4096 flags: O..
|
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12: offset: 262144 length: 4096 flags: O..
|
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13: offset: 270336 length: 4096 flags: O..
|
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14: offset: 294912 length: 4096 flags: O..
|
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15: offset: 303104 length: 4096 flags: O..
|
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16: offset: 327680 length: 4096 flags: O..
|
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17: offset: 335872 length: 4096 flags: O..
|
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18: offset: 360448 length: 4096 flags: O..
|
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19: offset: 368640 length: 4096 flags: O..
|
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20: offset: 393216 length: 4096 flags: O..
|
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21: offset: 401408 length: 4096 flags: O..
|
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22: offset: 425984 length: 4096 flags: O..
|
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23: offset: 434176 length: 4096 flags: O..
|
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24: offset: 458752 length: 4096 flags: O..
|
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25: offset: 466944 length: 4096 flags: O..
|
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26: offset: 491520 length: 4096 flags: O..
|
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27: offset: 499712 length: 4096 flags: O..
|
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28: offset: 720896 length: 4096 flags: O..
|
||||
29: offset: 729088 length: 4096 flags: O..
|
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30: offset: 753664 length: 4096 flags: O..
|
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31: offset: 761856 length: 4096 flags: O..
|
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32: offset: 786432 length: 4096 flags: O..
|
||||
33: offset: 794624 length: 4096 flags: O..
|
||||
34: offset: 819200 length: 4096 flags: O..
|
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35: offset: 827392 length: 4096 flags: O..
|
||||
36: offset: 851968 length: 4096 flags: O..
|
||||
37: offset: 860160 length: 4096 flags: O..
|
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38: offset: 884736 length: 4096 flags: O..
|
||||
39: offset: 892928 length: 4096 flags: O..
|
||||
40: offset: 917504 length: 4096 flags: O..
|
||||
41: offset: 925696 length: 4096 flags: O..
|
||||
42: offset: 950272 length: 4096 flags: O..
|
||||
43: offset: 958464 length: 4096 flags: O..
|
||||
44: offset: 983040 length: 4096 flags: O..
|
||||
45: offset: 991232 length: 4096 flags: O..
|
||||
46: offset: 1015808 length: 4096 flags: O..
|
||||
47: offset: 1024000 length: 4096 flags: O..
|
||||
48: offset: 1048576 length: 4096 flags: O..
|
||||
49: offset: 1056768 length: 4096 flags: O..
|
||||
50: offset: 1081344 length: 4096 flags: O..
|
||||
51: offset: 1089536 length: 4096 flags: O..
|
||||
52: offset: 1114112 length: 4096 flags: O..
|
||||
53: offset: 1122304 length: 4096 flags: O..
|
||||
54: offset: 1146880 length: 4096 flags: O..
|
||||
55: offset: 1155072 length: 4096 flags: O..
|
||||
56: offset: 1179648 length: 4096 flags: O..
|
||||
57: offset: 1187840 length: 4096 flags: O..
|
||||
58: offset: 1212416 length: 4096 flags: O..
|
||||
59: offset: 1220608 length: 4096 flags: O..
|
||||
60: offset: 1245184 length: 4096 flags: O..
|
||||
61: offset: 1253376 length: 4096 flags: O..
|
||||
62: offset: 1277952 length: 4096 flags: O..
|
||||
63: offset: 1286144 length: 4096 flags: O..
|
||||
64: offset: 1310720 length: 4096 flags: O..
|
||||
65: offset: 1318912 length: 4096 flags: O..
|
||||
66: offset: 1343488 length: 4096 flags: O..
|
||||
67: offset: 1351680 length: 4096 flags: O..
|
||||
68: offset: 1376256 length: 4096 flags: O..
|
||||
69: offset: 1384448 length: 4096 flags: O..
|
||||
70: offset: 1409024 length: 4096 flags: O..
|
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71: offset: 1417216 length: 4096 flags: O..
|
||||
72: offset: 1441792 length: 4096 flags: O..
|
||||
73: offset: 1449984 length: 4096 flags: O..
|
||||
74: offset: 1474560 length: 4096 flags: O..
|
||||
75: offset: 1482752 length: 4096 flags: O..
|
||||
76: offset: 1507328 length: 4096 flags: O..
|
||||
77: offset: 1515520 length: 4096 flags: O..
|
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78: offset: 1540096 length: 4096 flags: O..
|
||||
79: offset: 1548288 length: 4096 flags: O..
|
||||
80: offset: 1572864 length: 4096 flags: O..
|
||||
81: offset: 1581056 length: 4096 flags: O..
|
||||
82: offset: 1605632 length: 4096 flags: O..
|
||||
83: offset: 1613824 length: 4096 flags: O..
|
||||
84: offset: 1638400 length: 4096 flags: O..
|
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85: offset: 1646592 length: 4096 flags: O..
|
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86: offset: 1671168 length: 4096 flags: O..
|
||||
87: offset: 1679360 length: 4096 flags: O..
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
238: offset: 4161536 length: 4096 flags: O..
|
||||
239: offset: 4169728 length: 4096 flags: O.L
|
||||
extents: 240
|
||||
0: offset: 0 length: 1 flags: O..
|
||||
1: offset: 8 length: 1 flags: O..
|
||||
2: offset: 16 length: 1 flags: O..
|
||||
3: offset: 24 length: 1 flags: O..
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
98: offset: 848 length: 1 flags: O..
|
||||
99: offset: 856 length: 1 flags: O..
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
105: offset: 904 length: 1 flags: O..
|
||||
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|
||||
107: offset: 920 length: 1 flags: O..
|
||||
108: offset: 928 length: 1 flags: O..
|
||||
109: offset: 936 length: 1 flags: O..
|
||||
110: offset: 944 length: 1 flags: O..
|
||||
111: offset: 952 length: 1 flags: O..
|
||||
112: offset: 960 length: 1 flags: O..
|
||||
113: offset: 968 length: 1 flags: O..
|
||||
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|
||||
115: offset: 984 length: 1 flags: O..
|
||||
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|
||||
117: offset: 1000 length: 1 flags: O..
|
||||
118: offset: 1008 length: 1 flags: O..
|
||||
119: offset: 1016 length: 1 flags: O.L
|
||||
extents: 120
|
||||
extents: 0
|
||||
@@ -11,6 +11,7 @@ simple-readdir.sh
|
||||
get-referring-entries.sh
|
||||
fallocate.sh
|
||||
basic-truncate.sh
|
||||
punch-offline.sh
|
||||
data-prealloc.sh
|
||||
setattr_more.sh
|
||||
offline-extent-waiting.sh
|
||||
|
||||
@@ -0,0 +1,152 @@
|
||||
|
||||
t_require_commands scoutfs dd fallocate
|
||||
|
||||
FILE="$T_D0/file"
|
||||
DIR="$T_D0/dir"
|
||||
|
||||
echo "== missing options should fail =="
|
||||
rm -rf $DIR && mkdir -p $DIR
|
||||
scoutfs punch-offline $DIR -l 4096 -V 0
|
||||
scoutfs punch-offline $DIR -o 0 -V 0
|
||||
scoutfs punch-offline $DIR -o 0 -l 4096
|
||||
|
||||
echo "== can't hole punch dir or special =="
|
||||
rm -rf $DIR && mkdir -p $DIR
|
||||
scoutfs punch-offline $DIR -o 0 -l 4096 -V 0
|
||||
|
||||
echo "== punching an empty file does nothing =="
|
||||
rm -f $FILE && touch $FILE
|
||||
scoutfs punch-offline $FILE -o 0 -l 4096 -V 0
|
||||
|
||||
echo "== punch outside of i_size does nothing =="
|
||||
dd if=/dev/zero of=$FILE bs=4096 count=1 status=none
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V 1
|
||||
|
||||
echo "== can't hole punch online extent =="
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
scoutfs punch-offline $FILE -o 0 -l 4096 -V 1
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
echo "== can't hole punch unwritten extent =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((4096 * 3)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
echo "== hole punch offline extent =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((4096 * 3)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
echo "== can't hole punch non-aligned bsz offset or len =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((4096 * 3)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
scoutfs punch-offline $FILE -o 4095 -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o 1 -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o 4096 -l 409700 -V $vers
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4097 -V $vers
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4095 -V $vers
|
||||
scoutfs punch-offline $FILE -o 4096 -l 1 -V $vers
|
||||
scoutfs punch-offline $FILE -o 4096 -l 0 -V $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
echo "== can't hole punch mismatched data_version =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((4096 * 3)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V 0
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V 2
|
||||
scoutfs punch-offline $FILE -o 4096 -l 4096 -V 9999
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
echo "== Punch hole crossing multiple extents =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((7 * 4096)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -L $FILE
|
||||
scoutfs punch-offline $FILE -o $((1 * 4096)) -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o $((3 * 4096)) -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o $((5 * 4096)) -l 4096 -V $vers
|
||||
# 0.1.2.3
|
||||
scoutfs get-fiemap -L $FILE
|
||||
scoutfs punch-offline $FILE -o $((2 * 4096)) -l $((3 * 4096)) -V $vers
|
||||
# 0.....1
|
||||
scoutfs get-fiemap -L $FILE
|
||||
|
||||
echo "== punch hole starting at a hole =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((7 * 4096)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -L $FILE
|
||||
scoutfs punch-offline $FILE -o $((1 * 4096)) -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o $((3 * 4096)) -l 4096 -V $vers
|
||||
scoutfs punch-offline $FILE -o $((5 * 4096)) -l 4096 -V $vers
|
||||
# 0.1.2.3
|
||||
scoutfs get-fiemap -L $FILE
|
||||
scoutfs punch-offline $FILE -o $((1 * 4096)) -l $((5 * 4096)) -V $vers
|
||||
# 0.....1
|
||||
scoutfs get-fiemap -L $FILE
|
||||
|
||||
echo "== large punch =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((6 * 1024 * 1024 * 1024)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version $vers
|
||||
scoutfs get-fiemap -L $FILE
|
||||
scoutfs punch-offline $FILE -o $((134123 * 4096)) -l $((68343 * 4096)) -V $vers
|
||||
scoutfs punch-offline $FILE -o $((467273 * 4096)) -l $((68343 * 4096)) -V $vers
|
||||
scoutfs punch-offline $FILE -o $((734623 * 4096)) -l $((68343 * 4096)) -V $vers
|
||||
scoutfs get-fiemap -L $FILE
|
||||
|
||||
echo "== overlapping punches with lots of extents =="
|
||||
rm -rf $FILE && touch $FILE
|
||||
fallocate -l $((4096 * 1024)) $FILE
|
||||
vers=$(scoutfs stat -s data_version "$FILE")
|
||||
scoutfs release $FILE --data-version 1
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
# punch odd ones away
|
||||
for h in $(seq 1 2 1023); do
|
||||
scoutfs punch-offline $FILE -o $((h * 4096)) -l 4096 -V $vers
|
||||
done
|
||||
scoutfs get-fiemap -Lb $FILE | tail -n 1
|
||||
# punch a large hole from 32 to 55, removing 7 extents
|
||||
scoutfs punch-offline $FILE -o $((32 * 4096)) -l $((13 * 4096)) -V $vers
|
||||
scoutfs get-fiemap -Lb $FILE | tail -n 1
|
||||
# punch every 8th @6
|
||||
for h in $(seq 6 8 1024); do
|
||||
scoutfs punch-offline $FILE -o $((h * 4096)) -l 4096 -V $vers
|
||||
done
|
||||
# again @4
|
||||
scoutfs get-fiemap -Lb $FILE | tail -n 1
|
||||
for h in $(seq 4 8 1024); do
|
||||
scoutfs punch-offline $FILE -o $((h * 4096)) -l 4096 -V $vers
|
||||
done
|
||||
scoutfs get-fiemap -Lb $FILE | tail -n 1
|
||||
# punching a large hole from 127 to 175, removing 12 extents
|
||||
scoutfs punch-offline $FILE -o $((127 * 4096)) -l $((48 * 4096)) -V $vers
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
# again @2
|
||||
for h in $(seq 2 8 1024); do
|
||||
scoutfs punch-offline $FILE -o $((h * 4096)) -l 4096 -V $vers
|
||||
done
|
||||
scoutfs get-fiemap -L $FILE
|
||||
# and again @0, punching away everything remaining extent
|
||||
for h in $(seq 0 8 1024); do
|
||||
scoutfs punch-offline $FILE -o $((h * 4096)) -l 4096 -V $vers
|
||||
done
|
||||
scoutfs get-fiemap -Lb $FILE
|
||||
|
||||
t_pass
|
||||
@@ -0,0 +1,127 @@
|
||||
#include <sys/ioctl.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <argp.h>
|
||||
|
||||
#include "sparse.h"
|
||||
#include "parse.h"
|
||||
#include "util.h"
|
||||
#include "ioctl.h"
|
||||
#include "cmd.h"
|
||||
|
||||
struct po_args {
|
||||
char *path;
|
||||
u64 offset;
|
||||
u64 length;
|
||||
u64 data_version;
|
||||
|
||||
unsigned offset_set:1,
|
||||
length_set:1,
|
||||
data_version_set:1;
|
||||
};
|
||||
|
||||
static int do_punch_offline(struct po_args *args)
|
||||
{
|
||||
struct scoutfs_ioctl_punch_offline ioctl_args;
|
||||
int ret;
|
||||
int fd;
|
||||
|
||||
fd = get_path(args->path, O_RDWR);
|
||||
if (fd < 0)
|
||||
return fd;
|
||||
|
||||
ioctl_args.offset = args->offset;
|
||||
ioctl_args.len = args->length;
|
||||
ioctl_args.data_version = args->data_version;
|
||||
ioctl_args.flags = 0;
|
||||
|
||||
ret = ioctl(fd, SCOUTFS_IOC_PUNCH_OFFLINE, &ioctl_args);
|
||||
|
||||
if (ret < 0) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "punch_offline ioctl failed: %s (%d)\n",
|
||||
strerror(errno), errno);
|
||||
}
|
||||
|
||||
close(fd);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int parse_opt(int key, char *arg, struct argp_state *state)
|
||||
{
|
||||
struct po_args *args = state->input;
|
||||
int ret = 0;
|
||||
|
||||
switch (key) {
|
||||
case 'V':
|
||||
ret = parse_u64(arg, &args->data_version);
|
||||
if (ret)
|
||||
return ret;
|
||||
args->data_version_set = 1;
|
||||
break;
|
||||
case 'o': /* offset */
|
||||
ret = parse_human(arg, &args->offset);
|
||||
if (ret)
|
||||
return ret;
|
||||
args->offset_set = 1;
|
||||
break;
|
||||
case 'l': /* length */
|
||||
ret = parse_human(arg, &args->length);
|
||||
if (ret)
|
||||
return ret;
|
||||
args->length_set = 1;
|
||||
break;
|
||||
case ARGP_KEY_ARG:
|
||||
if (!args->path)
|
||||
args->path = strdup_or_error(state, arg);
|
||||
else
|
||||
argp_error(state, "unknown extra argument given");
|
||||
break;
|
||||
case ARGP_KEY_FINI:
|
||||
if (!args->path)
|
||||
argp_error(state, "must provide path to file");
|
||||
if (!args->offset_set)
|
||||
argp_error(state, "must provide offset");
|
||||
if (!args->length_set)
|
||||
argp_error(state, "must provide length");
|
||||
if (!args->data_version_set)
|
||||
argp_error(state, "must provide data_version");
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct argp_option options[] = {
|
||||
{ "data-version", 'V', "VERSION", 0, "Data version of the file [Required]"},
|
||||
{ "offset", 'o', "OFFSET", 0, "Offset (bytes or KMGTP units) in file to stage [Required]"},
|
||||
{ "length", 'l', "LENGTH", 0, "Length of range (bytes or KMGTP units) of file to stage. [Required]"},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static struct argp argp = {
|
||||
options,
|
||||
parse_opt,
|
||||
"PATH",
|
||||
"Make a (sparse) hole in the file at offset and with length"
|
||||
};
|
||||
|
||||
static int punch_offline_cmd(int argc, char **argv)
|
||||
{
|
||||
struct po_args po_args = {NULL};
|
||||
int ret;
|
||||
|
||||
ret = argp_parse(&argp, argc, argv, 0, NULL, &po_args);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return do_punch_offline(&po_args);
|
||||
}
|
||||
|
||||
static void __attribute__((constructor)) punch_offline_ctor(void)
|
||||
{
|
||||
cmd_register_argp("punch-offline", &argp, GROUP_AGENT, punch_offline_cmd);
|
||||
}
|
||||
Reference in New Issue
Block a user