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https://github.com/versity/scoutfs.git
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Merge pull request #118 from versity/zab/prepare_empty_data_dev
Zab/prepare empty data dev
This commit is contained in:
Zach Brown
GitHub
@@ -39,6 +39,18 @@ t_quiet()
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t_fail "quiet command failed"
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}
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#
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# Quietly run a command during a test. The output is logged but only
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# the return code is printed, presumably because the output contains
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# a lot of invocation specific text that is difficult to filter.
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#
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t_rc()
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{
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echo "# $*" >> "$T_TMP.rc.log"
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"$@" >> "$T_TMP.rc.log" 2>&1
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echo "rc: $?"
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}
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#
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# redirect test output back to the output of the invoking script intead
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# of the compared output.
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27
tests/golden/change-devices
Normal file
27
tests/golden/change-devices
Normal file
@@ -0,0 +1,27 @@
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== make tmp sparse data dev files
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== make scratch fs
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== small new data device fails
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rc: 1
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== check sees data device errors
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rc: 1
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rc: 0
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== preparing while mounted fails
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rc: 1
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== preparing without recovery fails
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rc: 1
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== check sees metadata errors
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rc: 1
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rc: 1
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== preparing with file data fails
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rc: 1
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== preparing after emptied
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rc: 0
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== checks pass
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rc: 0
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rc: 0
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== using prepared
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== preparing larger and resizing
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rc: 0
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equal_prepared
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large_prepared
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resized larger test rc: 0
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@@ -36,6 +36,7 @@ cross-mount-data-free.sh
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persistent-item-vers.sh
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setup-error-teardown.sh
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resize-devices.sh
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change-devices.sh
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fence-and-reclaim.sh
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orphan-inodes.sh
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mount-unmount-race.sh
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@@ -12,7 +12,7 @@ mount_fail()
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}
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echo "== prepare devices, mount point, and logs"
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SCR="/mnt/scoutfs.extra"
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SCR="$T_TMPDIR/mnt.scratch"
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mkdir -p "$SCR"
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> $T_TMP.mount.out
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scoutfs mkfs -f -Q 0,127.0.0.1,53000 "$T_EX_META_DEV" "$T_EX_DATA_DEV" > $T_TMP.mkfs.out 2>&1 \
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76
tests/tests/change-devices.sh
Normal file
76
tests/tests/change-devices.sh
Normal file
@@ -0,0 +1,76 @@
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#
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# test changing devices
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#
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echo "== make tmp sparse data dev files"
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sz=$(blockdev --getsize64 "$T_EX_DATA_DEV")
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large_sz=$((sz * 2))
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touch "$T_TMP."{small,equal,large}
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truncate -s 1MB "$T_TMP.small"
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truncate -s $sz "$T_TMP.equal"
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truncate -s $large_sz "$T_TMP.large"
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echo "== make scratch fs"
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t_quiet scoutfs mkfs -f -Q 0,127.0.0.1,53000 "$T_EX_META_DEV" "$T_EX_DATA_DEV"
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SCR="$T_TMPDIR/mnt.scratch"
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mkdir -p "$SCR"
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echo "== small new data device fails"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.small"
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echo "== check sees data device errors"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV" "$T_TMP.small"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV"
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echo "== preparing while mounted fails"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$T_EX_DATA_DEV" "$SCR"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.equal"
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umount "$SCR"
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echo "== preparing without recovery fails"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$T_EX_DATA_DEV" "$SCR"
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umount -f "$SCR"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.equal"
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echo "== check sees metadata errors"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV" "$T_TMP.equal"
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echo "== preparing with file data fails"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$T_EX_DATA_DEV" "$SCR"
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echo hi > "$SCR"/file
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umount "$SCR"
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scoutfs print "$T_EX_META_DEV" > "$T_TMP.print"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.equal"
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echo "== preparing after emptied"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$T_EX_DATA_DEV" "$SCR"
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rm -f "$SCR"/file
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umount "$SCR"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.equal"
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echo "== checks pass"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV"
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t_rc scoutfs prepare-empty-data-device --check "$T_EX_META_DEV" "$T_TMP.equal"
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echo "== using prepared"
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scr_loop=$(losetup --find --show "$T_TMP.equal")
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$scr_loop" "$SCR"
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touch "$SCR"/equal_prepared
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equal_tot=$(scoutfs statfs -s total_data_blocks -p "$SCR")
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umount "$SCR"
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losetup -d "$scr_loop"
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echo "== preparing larger and resizing"
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t_rc scoutfs prepare-empty-data-device "$T_EX_META_DEV" "$T_TMP.large"
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scr_loop=$(losetup --find --show "$T_TMP.large")
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 "$scr_loop" "$SCR"
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touch "$SCR"/large_prepared
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ls "$SCR"
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scoutfs resize-devices -p "$SCR" -d $large_sz
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large_tot=$(scoutfs statfs -s total_data_blocks -p "$SCR")
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test "$large_tot" -gt "$equal_tot" ; echo "resized larger test rc: $?"
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umount "$SCR"
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losetup -d "$scr_loop"
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t_pass
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@@ -59,7 +59,7 @@ echo "== make small meta fs"
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# meta device just big enough for reserves and the metadata we'll fill
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scoutfs mkfs -A -f -Q 0,127.0.0.1,53000 -m 10G "$T_EX_META_DEV" "$T_EX_DATA_DEV" > $T_TMP.mkfs.out 2>&1 || \
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t_fail "mkfs failed"
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SCR="/mnt/scoutfs.enospc"
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SCR="$T_TMPDIR/mnt.scratch"
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mkdir -p "$SCR"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 \
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"$T_EX_DATA_DEV" "$SCR"
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@@ -73,7 +73,7 @@ echo "== make initial small fs"
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scoutfs mkfs -A -f -Q 0,127.0.0.1,53000 -m $quarter_meta -d $quarter_data \
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"$T_EX_META_DEV" "$T_EX_DATA_DEV" > $T_TMP.mkfs.out 2>&1 || \
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t_fail "mkfs failed"
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SCR="/mnt/scoutfs.enospc"
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SCR="$T_TMPDIR/mnt.scratch"
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mkdir -p "$SCR"
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mount -t scoutfs -o metadev_path=$T_EX_META_DEV,quorum_slot_nr=0 \
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"$T_EX_DATA_DEV" "$SCR"
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@@ -76,6 +76,97 @@ run when the file system will not be mounted.
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.RE
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.PD
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.TP
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.BI "counters [-t|--table] SYSFS-DIR"
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.sp
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Display the counters and their values for a mounted ScoutFS filesystem.
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.RS 1.0i
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.PD 0
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.sp
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.TP
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.B SYSFS-DIR
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The mount's sysfs directory in which to find the
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.B counters/
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directory when then contains files for each counter.
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The sysfs directory is
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of the form
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.I /sys/fs/scoutfs/f.<fsid>.r.<rid>/
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\&.
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.TP
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.B "-t, --table"
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Format the counters into a columnar table that fills the width of the display
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instead of printing one counter per line.
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.RE
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.PD
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.TP
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.BI "data-waiting {-I|--inode} INODE-NUM {-B|--block} BLOCK-NUM [-p|--path PATH]"
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.sp
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Display all the files and blocks for which there is a task blocked waiting on
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offline data.
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.sp
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The results are sorted by the file's inode number and the
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logical block offset that is being waited on.
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.sp
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Each line of output describes a block in a file that has a task waiting
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and is formatted as:
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.I "ino <nr> iblock <nr> ops [str]"
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\&. The ops string indicates blocked operations seperated by commas and can
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include
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.B read
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for a read operation,
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.B write
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for a write operation, and
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.B change_size
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for a truncate or extending write.
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.RS 1.0i
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.PD 0
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.sp
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.TP
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.B "-I, --inode INODE-NUM"
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Start iterating over waiting tasks from the given inode number.
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Value of 0 will show all waiting tasks.
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.TP
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.B "-B, --block BLOCK-NUM"
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Start iterating over waiting tasks from the given logical block number
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in the starting inode. Value of 0 will show blocks in the first inode
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and then continue to show all blocks with tasks waiting in all the
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remaining inodes.
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.TP
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.B "-p, --path PATH"
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A path within a ScoutFS filesystem.
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.RE
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.PD
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.TP
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.BI "data-wait-err {-I|--inode} INODE-NUM {-V|--version} VER-NUM {-F|--offset} OFF-NUM {-C|--count} COUNT {-O|--op} OP {-E|--err} ERR [-p|--path PATH]"
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.sp
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Return error from matching waiters.
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.RS 1.0i
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.PD 0
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.sp
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.TP
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.B "-C, --count COUNT"
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Count.
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.TP
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.B "-E, --err ERR"
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Error.
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.TP
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.B "-F, --offset OFF-NUM"
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Offset. May be expressed in bytes, or with KMGTP (Kibi, Mibi, etc.) size
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suffixes.
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.TP
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.B "-I, --inode INODE-NUM"
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Inode number.
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.TP
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.B "-O, --op OP"
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Operation. One of: "read", "write", "change_size".
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.TP
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.B "-p, --path PATH"
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A path within a ScoutFS filesystem.
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.RE
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.PD
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.TP
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.BI "df [-h|--human-readable] [-p|--path PATH]"
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.sp
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@@ -93,6 +184,72 @@ A path within a ScoutFS filesystem.
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.RE
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.PD
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||||
.TP
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||||
.BI "get-allocated-inos [-i|--ino INO] [-s|--single] [-p|--path PATH]"
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||||
.sp
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||||
This debugging command prints allocated inode numbers. It only prints
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inodes
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||||
found in the group that contains the starting inode. The printed inode
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||||
numbers aren't necessarily reachable. They could be anywhere in the
|
||||
process from being unlinked to finally deleted when their items
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were found.
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.RS 1.0i
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.PD 0
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.TP
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||||
.sp
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||||
.B "-i, --ino INO"
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The first 64bit inode number which could be printed.
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.TP
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||||
.B "-s, --single"
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||||
Only print the single starting inode when it is allocated, all other allocated
|
||||
inode numbers will be ignored.
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.TP
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.B "-p, --path PATH"
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||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
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||||
.BI "ino-path INODE-NUM [-p|--path PATH]"
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||||
.sp
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||||
Display all paths that reference an inode number.
|
||||
.sp
|
||||
Ongoing filesystem changes, such as renaming a common parent of multiple paths,
|
||||
can cause displayed paths to be inconsistent.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "INODE-NUM"
|
||||
The inode number of the target inode.
|
||||
.TP
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "list-hidden-xattrs FILE"
|
||||
.sp
|
||||
Display extended attributes starting with the
|
||||
.BR scoutfs.
|
||||
prefix and containing the
|
||||
.BR hide.
|
||||
tag
|
||||
which makes them invisible to
|
||||
.BR listxattr (2) .
|
||||
The names of each attribute are output, one per line. Their order
|
||||
is not specified.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "FILE"
|
||||
The path to a file within a ScoutFS filesystem. File permissions must allow
|
||||
reading.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "mkfs META-DEVICE DATA-DEVICE {-Q|--quorum-slot} NR,ADDR,PORT [-m|--max-meta-size SIZE] [-d|--max-data-size SIZE] [-z|--data-alloc-zone-blocks BLOCKS] [-f|--force] [-A|--allow-small-size] [-V|--format-version VERS]"
|
||||
.sp
|
||||
@@ -171,6 +328,79 @@ The range of supported versions is visible in the output of
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "prepare-empty-data-device {-c|--check} META-DEVICE DATA-DEVICE"
|
||||
.sp
|
||||
Prepare an unused device for use as the data device for an existing file
|
||||
system. This will write an initialized super block to the specified
|
||||
data device, destroying any existing contents. The specified metadata
|
||||
device will not be modified. The file system must be fully unmounted
|
||||
and any client mount recovery must be complete.
|
||||
.sp
|
||||
The existing metadata device is read to ensure that it's safe to stop
|
||||
using the old data device. The data block allocators must indicate that
|
||||
all data blocks are free. If there are still data blocks referenced by
|
||||
files then the command will fail. The contents of these files must be
|
||||
freed for the command to proceed.
|
||||
.sp
|
||||
A new super block is written to the new data device. The device can
|
||||
then be used as the data device to mount the file system. As this
|
||||
switch is made all client mounts must refer to the new device. The old
|
||||
device is not modified and still contains a valid data super block that
|
||||
could be mounted, creating data device writes that wouldn't be read by
|
||||
mounts using the new device.
|
||||
.sp
|
||||
The number of data blocks available to the file system will not change
|
||||
as the new data device is used. The new device must be large enough to
|
||||
store all the data blocks that were available on the old device. If the
|
||||
new device is larger then its added capacity can be used by growing the
|
||||
new data device with the resize-devices command once it is mounted.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "-c, --check"
|
||||
Only check for errors that would prevent a new empty data device from
|
||||
being used. No changes will be made to the data device. If the data
|
||||
device is provided then its size will be checked to make sure that it is
|
||||
large enough. This can be used to test the metadata for data references
|
||||
before destroying an old empty data device.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "print {-S|--skip-likely-huge} META-DEVICE"
|
||||
.sp
|
||||
Prints out all of the metadata in the file system. This makes no effort
|
||||
to ensure that the structures are consistent as they're traversed and
|
||||
can present structures that seem corrupt as they change as they're
|
||||
output.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "-S, --skip-likely-huge"
|
||||
Skip printing structures that are likely to be very large. The
|
||||
structures that are skipped tend to be global and whose size tends to be
|
||||
related to the size of the volume. Examples of skipped structures include
|
||||
the global fs items, srch files, and metadata and data
|
||||
allocators. Similar structures that are not skipped are related to the
|
||||
number of mounts and are maintained at a relatively reasonable size.
|
||||
These include per-mount log trees, srch files, allocators, and the
|
||||
metadata allocators used by server commits.
|
||||
.sp
|
||||
Skipping the larger structures limits the print output to a relatively
|
||||
constant size rather than being a large multiple of the used metadata
|
||||
space of the volume making the output much more useful for inspection.
|
||||
.TP
|
||||
.B "META-DEVICE"
|
||||
The path to the metadata device for the filesystem whose metadata will be
|
||||
printed. An attempt will be made to flush the host's buffer cache for
|
||||
this device with the BLKFLSBUF ioctl, or with posix_fadvise() if
|
||||
the path refers to a regular file.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "resize-devices [-p|--path PATH] [-m|--meta-size SIZE] [-d|--data-size SIZE]"
|
||||
.sp
|
||||
@@ -229,6 +459,92 @@ kibibytes, mebibytes, etc.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "search-xattrs XATTR-NAME [-p|--path PATH]"
|
||||
.sp
|
||||
Display the inode numbers of inodes in the filesystem which may have
|
||||
an extended attribute with the given name.
|
||||
.sp
|
||||
The results may contain false positives. The returned inode numbers
|
||||
should be checked to verify that the extended attribute is in fact
|
||||
present on the inode.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B XATTR-NAME
|
||||
The full name of the extended attribute to search for as
|
||||
described in the
|
||||
.BR xattr (7)
|
||||
manual page.
|
||||
.TP
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "setattr FILE [-d, --data-version=VERSION [-s, --size=SIZE [-o, --offline]]] [-t, --ctime=TIMESPEC]"
|
||||
.sp
|
||||
Set ScoutFS-specific attributes on a newly created zero-length file.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "-V, --data-version=VERSION"
|
||||
Set data version.
|
||||
.TP
|
||||
.B "-o, --offline"
|
||||
Set file contents as offline, not sparse. Requires
|
||||
.I --size
|
||||
option also be present.
|
||||
.TP
|
||||
.B "-s, --size=SIZE"
|
||||
Set file size. May be expressed in bytes, or with
|
||||
KMGTP (Kibi, Mibi, etc.) size suffixes. Requires
|
||||
.I --data-version
|
||||
option also be present.
|
||||
.TP
|
||||
.B "-t, --ctime=TIMESPEC"
|
||||
Set creation time using
|
||||
.I "<seconds-since-epoch>.<nanoseconds>"
|
||||
format.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "stage ARCHIVE-FILE FILE {-V|--version} VERSION [-o, --offset OFF-NUM] [-l, --length LENGTH]"
|
||||
.sp
|
||||
.B Stage
|
||||
(i.e. return to online) the previously-offline contents of a file by copying a
|
||||
region from another file, the archive, and without updating regular inode
|
||||
metadata. Any operations that are blocked by the existence of an offline
|
||||
region will proceed once the region has been staged.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "ARCHIVE-FILE"
|
||||
The source file for the file contents being staged.
|
||||
.TP
|
||||
.B "FILE"
|
||||
The regular file whose contents will be staged.
|
||||
.TP
|
||||
.B "-V, --version VERSION"
|
||||
The data_version of the contents to be staged. It must match the
|
||||
current data_version of the file.
|
||||
.TP
|
||||
.B "-o, --offset OFF-NUM"
|
||||
The starting byte offset of the region to write. May be expressed in bytes, or with
|
||||
KMGTP (Kibi, Mibi, etc.) size suffixes. Default is 0.
|
||||
.TP
|
||||
.B "-l, --length LENGTH"
|
||||
Length of range (bytes or KMGTP units) of file to stage. Default is the file's
|
||||
total size.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "stat FILE [-s|--single-field FIELD-NAME]"
|
||||
.sp
|
||||
Display ScoutFS-specific metadata fields for the given file.
|
||||
@@ -314,221 +630,6 @@ The total number of 4K data blocks in the filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "counters [-t|--table] SYSFS-DIR"
|
||||
.sp
|
||||
Display the counters and their values for a mounted ScoutFS filesystem.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B SYSFS-DIR
|
||||
The mount's sysfs directory in which to find the
|
||||
.B counters/
|
||||
directory when then contains files for each counter.
|
||||
The sysfs directory is
|
||||
of the form
|
||||
.I /sys/fs/scoutfs/f.<fsid>.r.<rid>/
|
||||
\&.
|
||||
.TP
|
||||
.B "-t, --table"
|
||||
Format the counters into a columnar table that fills the width of the display
|
||||
instead of printing one counter per line.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "search-xattrs XATTR-NAME [-p|--path PATH]"
|
||||
.sp
|
||||
Display the inode numbers of inodes in the filesystem which may have
|
||||
an extended attribute with the given name.
|
||||
.sp
|
||||
The results may contain false positives. The returned inode numbers
|
||||
should be checked to verify that the extended attribute is in fact
|
||||
present on the inode.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B XATTR-NAME
|
||||
The full name of the extended attribute to search for as
|
||||
described in the
|
||||
.BR xattr (7)
|
||||
manual page.
|
||||
.TP
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "list-hidden-xattrs FILE"
|
||||
.sp
|
||||
Display extended attributes starting with the
|
||||
.BR scoutfs.
|
||||
prefix and containing the
|
||||
.BR hide.
|
||||
tag
|
||||
which makes them invisible to
|
||||
.BR listxattr (2) .
|
||||
The names of each attribute are output, one per line. Their order
|
||||
is not specified.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "FILE"
|
||||
The path to a file within a ScoutFS filesystem. File permissions must allow
|
||||
reading.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "walk-inodes {meta_seq|data_seq} FIRST-INODE LAST-INODE [-p|--path PATH]"
|
||||
.sp
|
||||
Walk an inode index in the file system and output the inode numbers
|
||||
that are found between the first and last positions in the index.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.BR meta_seq , data_seq
|
||||
Which index to walk.
|
||||
.TP
|
||||
.B "FIRST-INODE"
|
||||
An integer index value giving starting position of the index walk.
|
||||
.I 0
|
||||
is the first possible position.
|
||||
.TP
|
||||
.B "LAST-INODE"
|
||||
An integer index value giving the last position to include in the index walk.
|
||||
.I \-1
|
||||
can be given to indicate the last possible position.
|
||||
.TP
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "ino-path INODE-NUM [-p|--path PATH]"
|
||||
.sp
|
||||
Display all paths that reference an inode number.
|
||||
.sp
|
||||
Ongoing filesystem changes, such as renaming a common parent of multiple paths,
|
||||
can cause displayed paths to be inconsistent.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "INODE-NUM"
|
||||
The inode number of the target inode.
|
||||
.TP
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "data-waiting {-I|--inode} INODE-NUM {-B|--block} BLOCK-NUM [-p|--path PATH]"
|
||||
.sp
|
||||
Display all the files and blocks for which there is a task blocked waiting on
|
||||
offline data.
|
||||
.sp
|
||||
The results are sorted by the file's inode number and the
|
||||
logical block offset that is being waited on.
|
||||
.sp
|
||||
Each line of output describes a block in a file that has a task waiting
|
||||
and is formatted as:
|
||||
.I "ino <nr> iblock <nr> ops [str]"
|
||||
\&. The ops string indicates blocked operations seperated by commas and can
|
||||
include
|
||||
.B read
|
||||
for a read operation,
|
||||
.B write
|
||||
for a write operation, and
|
||||
.B change_size
|
||||
for a truncate or extending write.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "-I, --inode INODE-NUM"
|
||||
Start iterating over waiting tasks from the given inode number.
|
||||
Value of 0 will show all waiting tasks.
|
||||
.TP
|
||||
.B "-B, --block BLOCK-NUM"
|
||||
Start iterating over waiting tasks from the given logical block number
|
||||
in the starting inode. Value of 0 will show blocks in the first inode
|
||||
and then continue to show all blocks with tasks waiting in all the
|
||||
remaining inodes.
|
||||
.TP
|
||||
.B "-p, --path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "data-wait-err {-I|--inode} INODE-NUM {-V|--version} VER-NUM {-F|--offset} OFF-NUM {-C|--count} COUNT {-O|--op} OP {-E|--err} ERR [-p|--path PATH]"
|
||||
.sp
|
||||
Return error from matching waiters.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "-C, --count COUNT"
|
||||
Count.
|
||||
.TP
|
||||
.B "-E, --err ERR"
|
||||
Error.
|
||||
.TP
|
||||
.B "-F, --offset OFF-NUM"
|
||||
Offset. May be expressed in bytes, or with KMGTP (Kibi, Mibi, etc.) size
|
||||
suffixes.
|
||||
.TP
|
||||
.B "-I, --inode INODE-NUM"
|
||||
Inode number.
|
||||
.TP
|
||||
.B "-O, --op OP"
|
||||
Operation. One of: "read", "write", "change_size".
|
||||
.TP
|
||||
.B "-p, --path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "stage ARCHIVE-FILE FILE {-V|--version} VERSION [-o, --offset OFF-NUM] [-l, --length LENGTH]"
|
||||
.sp
|
||||
.B Stage
|
||||
(i.e. return to online) the previously-offline contents of a file by copying a
|
||||
region from another file, the archive, and without updating regular inode
|
||||
metadata. Any operations that are blocked by the existence of an offline
|
||||
region will proceed once the region has been staged.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "ARCHIVE-FILE"
|
||||
The source file for the file contents being staged.
|
||||
.TP
|
||||
.B "FILE"
|
||||
The regular file whose contents will be staged.
|
||||
.TP
|
||||
.B "-V, --version VERSION"
|
||||
The data_version of the contents to be staged. It must match the
|
||||
current data_version of the file.
|
||||
.TP
|
||||
.B "-o, --offset OFF-NUM"
|
||||
The starting byte offset of the region to write. May be expressed in bytes, or with
|
||||
KMGTP (Kibi, Mibi, etc.) size suffixes. Default is 0.
|
||||
.TP
|
||||
.B "-l, --length LENGTH"
|
||||
Length of range (bytes or KMGTP units) of file to stage. Default is the file's
|
||||
total size.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "release FILE {-V|--version} VERSION [-o, --offset OFF-NUM] [-l, --length LENGTH]"
|
||||
.sp
|
||||
@@ -568,88 +669,28 @@ total size.
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "setattr FILE [-d, --data-version=VERSION [-s, --size=SIZE [-o, --offline]]] [-t, --ctime=TIMESPEC]"
|
||||
.BI "walk-inodes {meta_seq|data_seq} FIRST-INODE LAST-INODE [-p|--path PATH]"
|
||||
.sp
|
||||
Set ScoutFS-specific attributes on a newly created zero-length file.
|
||||
Walk an inode index in the file system and output the inode numbers
|
||||
that are found between the first and last positions in the index.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.sp
|
||||
.TP
|
||||
.B "-V, --data-version=VERSION"
|
||||
Set data version.
|
||||
.BR meta_seq , data_seq
|
||||
Which index to walk.
|
||||
.TP
|
||||
.B "-o, --offline"
|
||||
Set file contents as offline, not sparse. Requires
|
||||
.I --size
|
||||
option also be present.
|
||||
.B "FIRST-INODE"
|
||||
An integer index value giving starting position of the index walk.
|
||||
.I 0
|
||||
is the first possible position.
|
||||
.TP
|
||||
.B "-s, --size=SIZE"
|
||||
Set file size. May be expressed in bytes, or with
|
||||
KMGTP (Kibi, Mibi, etc.) size suffixes. Requires
|
||||
.I --data-version
|
||||
option also be present.
|
||||
.B "LAST-INODE"
|
||||
An integer index value giving the last position to include in the index walk.
|
||||
.I \-1
|
||||
can be given to indicate the last possible position.
|
||||
.TP
|
||||
.B "-t, --ctime=TIMESPEC"
|
||||
Set creation time using
|
||||
.I "<seconds-since-epoch>.<nanoseconds>"
|
||||
format.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "print {-S|--skip-likely-huge} META-DEVICE"
|
||||
.sp
|
||||
Prints out all of the metadata in the file system. This makes no effort
|
||||
to ensure that the structures are consistent as they're traversed and
|
||||
can present structures that seem corrupt as they change as they're
|
||||
output.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "-S, --skip-likely-huge"
|
||||
Skip printing structures that are likely to be very large. The
|
||||
structures that are skipped tend to be global and whose size tends to be
|
||||
related to the size of the volume. Examples of skipped structures include
|
||||
the global fs items, srch files, and metadata and data
|
||||
allocators. Similar structures that are not skipped are related to the
|
||||
number of mounts and are maintained at a relatively reasonable size.
|
||||
These include per-mount log trees, srch files, allocators, and the
|
||||
metadata allocators used by server commits.
|
||||
.sp
|
||||
Skipping the larger structures limits the print output to a relatively
|
||||
constant size rather than being a large multiple of the used metadata
|
||||
space of the volume making the output much more useful for inspection.
|
||||
.TP
|
||||
.B "META-DEVICE"
|
||||
The path to the metadata device for the filesystem whose metadata will be
|
||||
printed. An attempt will be made to flush the host's buffer cache for
|
||||
this device with the BLKFLSBUF ioctl, or with posix_fadvise() if
|
||||
the path refers to a regular file.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
.TP
|
||||
.BI "get-allocated-inos [-i|--ino INO] [-s|--single] [-p|--path PATH]"
|
||||
.sp
|
||||
This debugging command prints allocated inode numbers. It only prints
|
||||
inodes
|
||||
found in the group that contains the starting inode. The printed inode
|
||||
numbers aren't necessarily reachable. They could be anywhere in the
|
||||
process from being unlinked to finally deleted when their items
|
||||
were found.
|
||||
.RS 1.0i
|
||||
.PD 0
|
||||
.TP
|
||||
.sp
|
||||
.B "-i, --ino INO"
|
||||
The first 64bit inode number which could be printed.
|
||||
.TP
|
||||
.B "-s, --single"
|
||||
Only print the single starting inode when it is allocated, all other allocated
|
||||
inode numbers will be ignored.
|
||||
.TP
|
||||
.B "-p, --path PATH"
|
||||
.B "-p|--path PATH"
|
||||
A path within a ScoutFS filesystem.
|
||||
.RE
|
||||
.PD
|
||||
|
||||
@@ -12,13 +12,10 @@
|
||||
#include "sparse.h"
|
||||
#include "dev.h"
|
||||
|
||||
int device_size(char *path, int fd,
|
||||
u64 min_size, u64 max_size, bool allow_small_size,
|
||||
char *use_type, u64 *size_ret)
|
||||
int get_device_size(char *path, int fd, u64 *size_ret)
|
||||
{
|
||||
struct stat st;
|
||||
u64 size;
|
||||
char *target_type;
|
||||
int ret;
|
||||
|
||||
if (fstat(fd, &st)) {
|
||||
@@ -30,7 +27,6 @@ int device_size(char *path, int fd,
|
||||
|
||||
if (S_ISREG(st.st_mode)) {
|
||||
size = st.st_size;
|
||||
target_type = "file";
|
||||
} else if (S_ISBLK(st.st_mode)) {
|
||||
if (ioctl(fd, BLKGETSIZE64, &size)) {
|
||||
ret = -errno;
|
||||
@@ -38,13 +34,26 @@ int device_size(char *path, int fd,
|
||||
path, strerror(errno), errno);
|
||||
return ret;
|
||||
}
|
||||
target_type = "device";
|
||||
} else {
|
||||
fprintf(stderr, "path isn't regular or device file '%s'\n",
|
||||
path);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
*size_ret = size;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int limit_device_size(char *path, int fd, u64 min_size, u64 max_size, bool allow_small_size,
|
||||
char *use_type, u64 *size_ret)
|
||||
{
|
||||
u64 size;
|
||||
int ret;
|
||||
|
||||
ret = get_device_size(path, fd, &size);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (max_size) {
|
||||
if (size > max_size) {
|
||||
printf("Limiting use of "BASE_SIZE_FMT
|
||||
@@ -64,9 +73,9 @@ int device_size(char *path, int fd,
|
||||
|
||||
if (size < min_size) {
|
||||
fprintf(stderr,
|
||||
BASE_SIZE_FMT" %s too small for min "
|
||||
BASE_SIZE_FMT" too small for min "
|
||||
BASE_SIZE_FMT" %s device%s\n",
|
||||
BASE_SIZE_ARGS(size), target_type,
|
||||
BASE_SIZE_ARGS(size),
|
||||
BASE_SIZE_ARGS(min_size), use_type,
|
||||
allow_small_size ? ", allowing with -A" : "");
|
||||
|
||||
|
||||
@@ -9,9 +9,9 @@
|
||||
#define SIZE_FMT "%llu (%.2f %s)"
|
||||
#define SIZE_ARGS(nr, sz) (nr), size_flt(nr, sz), size_str(nr, sz)
|
||||
|
||||
int device_size(char *path, int fd,
|
||||
u64 min_size, u64 max_size, bool allow_small_size,
|
||||
char *use_type, u64 *size_ret);
|
||||
int get_device_size(char *path, int fd, u64 *size_ret);
|
||||
int limit_device_size(char *path, int fd, u64 min_size, u64 max_size, bool allow_small_size,
|
||||
char *use_type, u64 *size_ret);
|
||||
float size_flt(u64 nr, unsigned size);
|
||||
char *size_str(u64 nr, unsigned size);
|
||||
int flush_device(int fd);
|
||||
|
||||
@@ -206,14 +206,14 @@ static int do_mkfs(struct mkfs_args *args)
|
||||
}
|
||||
|
||||
/* minumum meta device size to make reserved blocks reasonably large */
|
||||
ret = device_size(args->meta_device, meta_fd, 64ULL * (1024 * 1024 * 1024),
|
||||
args->max_meta_size, args->allow_small_size, "meta", &meta_size);
|
||||
ret = limit_device_size(args->meta_device, meta_fd, 64ULL * (1024 * 1024 * 1024),
|
||||
args->max_meta_size, args->allow_small_size, "meta", &meta_size);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
/* .. then arbitrarily the same minimum data device size */
|
||||
ret = device_size(args->data_device, data_fd, 64ULL * (1024 * 1024 * 1024),
|
||||
args->max_data_size, args->allow_small_size, "data", &data_size);
|
||||
ret = limit_device_size(args->data_device, data_fd, 64ULL * (1024 * 1024 * 1024),
|
||||
args->max_data_size, args->allow_small_size, "data", &data_size);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
|
||||
247
utils/src/prepare_empty_data_device.c
Normal file
247
utils/src/prepare_empty_data_device.c
Normal file
@@ -0,0 +1,247 @@
|
||||
#define _GNU_SOURCE /* O_DIRECT */
|
||||
#include <unistd.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <sys/time.h>
|
||||
#include <uuid/uuid.h>
|
||||
#include <fcntl.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <unistd.h>
|
||||
#include <assert.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netinet/in.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <ctype.h>
|
||||
#include <inttypes.h>
|
||||
#include <argp.h>
|
||||
|
||||
#include "sparse.h"
|
||||
#include "cmd.h"
|
||||
#include "util.h"
|
||||
#include "format.h"
|
||||
#include "parse.h"
|
||||
#include "crc.h"
|
||||
#include "rand.h"
|
||||
#include "dev.h"
|
||||
#include "key.h"
|
||||
#include "bitops.h"
|
||||
#include "btree.h"
|
||||
#include "leaf_item_hash.h"
|
||||
#include "blkid.h"
|
||||
#include "quorum.h"
|
||||
|
||||
struct prepare_empty_data_dev_args {
|
||||
char *meta_device;
|
||||
char *data_device;
|
||||
bool check;
|
||||
};
|
||||
|
||||
static int do_prepare_empty_data_dev(struct prepare_empty_data_dev_args *args)
|
||||
{
|
||||
struct scoutfs_super_block *meta_super = NULL;
|
||||
struct scoutfs_super_block *data_super = NULL;
|
||||
char uuid_str[37];
|
||||
int meta_fd = -1;
|
||||
int data_fd = -1;
|
||||
u64 data_blocks;
|
||||
u64 data_size;
|
||||
u64 in_use;
|
||||
int ret;
|
||||
|
||||
ret = posix_memalign((void **)&data_super, SCOUTFS_BLOCK_SM_SIZE, SCOUTFS_BLOCK_SM_SIZE);
|
||||
if (ret < 0) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "failed to allocate data super block: %s (%d)\n",
|
||||
strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
meta_fd = open(args->meta_device, O_DIRECT | O_SYNC | O_RDONLY | O_EXCL);
|
||||
if (meta_fd < 0) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "failed to open meta device '%s': %s (%d)\n",
|
||||
args->meta_device, strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = read_block_verify(meta_fd, SCOUTFS_BLOCK_MAGIC_SUPER, 0, SCOUTFS_SUPER_BLKNO,
|
||||
SCOUTFS_BLOCK_SM_SHIFT, (void **)&meta_super);
|
||||
if (ret) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "failed to read meta super block: %s (%d)\n",
|
||||
strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = meta_super_in_use(meta_fd, meta_super);
|
||||
if (ret < 0) {
|
||||
if (ret == -EBUSY)
|
||||
fprintf(stderr, "The filesystem must be fully recovered and cleanly unmounted to determine if the data device is empty.\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
in_use = (le64_to_cpu(meta_super->total_data_blocks) - SCOUTFS_DATA_DEV_START_BLKNO) -
|
||||
le64_to_cpu(meta_super->data_alloc.total_len);
|
||||
if (in_use) {
|
||||
fprintf(stderr, "Data block allocator metadata shows "SIZE_FMT" data blocks used by files. They must be removed, truncated, or released before a new empty data device can be used.\n",
|
||||
SIZE_ARGS(in_use, SCOUTFS_BLOCK_SM_SIZE));
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (args->data_device) {
|
||||
data_fd = open(args->data_device, O_DIRECT | O_EXCL |
|
||||
(args->check ? O_RDONLY : O_RDWR | O_SYNC));
|
||||
if (data_fd < 0) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "failed to open data device '%s': %s (%d)\n",
|
||||
args->data_device, strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = get_device_size(args->data_device, data_fd, &data_size);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
data_blocks = data_size >> SCOUTFS_BLOCK_SM_SHIFT;
|
||||
|
||||
if (data_blocks < le64_to_cpu(meta_super->total_data_blocks)) {
|
||||
fprintf(stderr, "new data device %s of size "BASE_SIZE_FMT" has %llu 4KiB blocks, it needs at least "SIZE_FMT" blocks.\n",
|
||||
args->data_device,
|
||||
BASE_SIZE_ARGS(data_size),
|
||||
data_blocks,
|
||||
SIZE_ARGS(le64_to_cpu(meta_super->total_data_blocks),
|
||||
SCOUTFS_BLOCK_SM_SIZE));
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (args->check) {
|
||||
ret = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* the data device superblock only needs fs identifying fields */
|
||||
memset(data_super, 0, sizeof(struct scoutfs_super_block));
|
||||
data_super->id = meta_super->id;
|
||||
data_super->fmt_vers = meta_super->fmt_vers;
|
||||
data_super->flags = meta_super->flags &~ cpu_to_le64(SCOUTFS_FLAG_IS_META_BDEV);
|
||||
memcpy(data_super->uuid, meta_super->uuid,sizeof(data_super->uuid));
|
||||
data_super->seq = meta_super->seq;
|
||||
data_super->total_meta_blocks = meta_super->total_meta_blocks;
|
||||
data_super->total_data_blocks = meta_super->total_data_blocks;
|
||||
|
||||
ret = write_block(data_fd, SCOUTFS_BLOCK_MAGIC_SUPER, meta_super->hdr.fsid, 1,
|
||||
SCOUTFS_SUPER_BLKNO, SCOUTFS_BLOCK_SM_SHIFT, &data_super->hdr);
|
||||
if (ret < 0) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "Error writing super block to new data device '%s': %s (%d)\n",
|
||||
args->data_device, strerror(errno), errno);
|
||||
goto out;
|
||||
}
|
||||
|
||||
uuid_unparse(meta_super->uuid, uuid_str);
|
||||
|
||||
printf("Successfully initialized empty data device for scoutfs filesystem:\n"
|
||||
" meta device path: %s\n"
|
||||
" data device path: %s\n"
|
||||
" fsid: %llx\n"
|
||||
" uuid: %s\n"
|
||||
" format version: %llu\n"
|
||||
" 64KB metadata blocks: "SIZE_FMT"\n"
|
||||
" 4KB data blocks: "SIZE_FMT"\n",
|
||||
args->meta_device,
|
||||
args->data_device,
|
||||
le64_to_cpu(meta_super->hdr.fsid),
|
||||
uuid_str,
|
||||
le64_to_cpu(meta_super->fmt_vers),
|
||||
SIZE_ARGS(le64_to_cpu(meta_super->total_meta_blocks),
|
||||
SCOUTFS_BLOCK_LG_SIZE),
|
||||
SIZE_ARGS(le64_to_cpu(meta_super->total_data_blocks),
|
||||
SCOUTFS_BLOCK_SM_SIZE));
|
||||
|
||||
ret = 0;
|
||||
out:
|
||||
if (args->check) {
|
||||
if (ret == 0)
|
||||
printf("All checks passed.\n");
|
||||
else
|
||||
printf("Errors were found that must be addressed before a new empty data device could be prepared and used.\n");
|
||||
}
|
||||
|
||||
if (meta_super)
|
||||
free(meta_super);
|
||||
if (data_super)
|
||||
free(data_super);
|
||||
if (meta_fd != -1)
|
||||
close(meta_fd);
|
||||
if (data_fd != -1)
|
||||
close(data_fd);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int parse_opt(int key, char *arg, struct argp_state *state)
|
||||
{
|
||||
struct prepare_empty_data_dev_args *args = state->input;
|
||||
|
||||
switch (key) {
|
||||
case 'c':
|
||||
args->check = true;
|
||||
break;
|
||||
case ARGP_KEY_ARG:
|
||||
if (!args->meta_device)
|
||||
args->meta_device = strdup_or_error(state, arg);
|
||||
else if (!args->data_device)
|
||||
args->data_device = strdup_or_error(state, arg);
|
||||
else
|
||||
argp_error(state, "more than two device arguments given");
|
||||
break;
|
||||
case ARGP_KEY_FINI:
|
||||
if (!args->meta_device)
|
||||
argp_error(state, "no metadata device argument given");
|
||||
if (!args->data_device && !args->check)
|
||||
argp_error(state, "no data device argument given");
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct argp_option options[] = {
|
||||
{ "check", 'c', NULL, 0, "Only check for errors and do not write", },
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static struct argp argp = {
|
||||
options,
|
||||
parse_opt,
|
||||
"META-DEVICE DATA-DEVICE",
|
||||
"Prepare empty data device for use with an existing ScoutFS filesystem"
|
||||
};
|
||||
|
||||
static int prepare_empty_data_dev_cmd(int argc, char *argv[])
|
||||
{
|
||||
struct prepare_empty_data_dev_args prepare_empty_data_dev_args = {
|
||||
.check = false,
|
||||
};
|
||||
int ret;
|
||||
|
||||
ret = argp_parse(&argp, argc, argv, 0, NULL, &prepare_empty_data_dev_args);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return do_prepare_empty_data_dev(&prepare_empty_data_dev_args);
|
||||
}
|
||||
|
||||
static void __attribute__((constructor)) prepare_empty_data_dev_ctor(void)
|
||||
{
|
||||
cmd_register_argp("prepare-empty-data-device", &argp, GROUP_CORE,
|
||||
prepare_empty_data_dev_cmd);
|
||||
}
|
||||
Reference in New Issue
Block a user