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svn+ssh://svn.code.sf.net/p/scst/svn/trunk ........ r7096 | bvassche | 2017-02-23 18:08:17 -0800 (Thu, 23 Feb 2017) | 4 lines scst_copy_mgr: Avoid that LUN removal triggers a BUG() Reported-by: Jinpu Wang <jinpu.wang@profitbricks.com> ........ r7101 | bvassche | 2017-03-01 07:31:59 -0800 (Wed, 01 Mar 2017) | 20 lines scst_vdisk: Avoid that LUN refresh triggers a general protection fault Avoid that triggering LUN referesh concurrently with device deletion triggers the following: general protection fault: 0000 [#1] Workqueue: events vdev_inq_changed_fn [scst_vdisk] Call Trace: _raw_spin_lock_bh+0x2b/0x30 scst_cm_update_dev+0x87/0x190 [scst] scst_dev_inquiry_data_changed+0xfb/0x1b0 [scst] vdev_inq_changed_fn+0x60/0x120 [scst_vdisk] process_one_work+0x14d/0x410 worker_thread+0x66/0x460 kthread+0xdb/0x100 ret_from_fork+0x3f/0x70 Reported-by: Jinpu Wang <jinpu.wang@profitbricks.com> Tested-by: Jinpu Wang <jinpu.wang@profitbricks.com> ........ r7104 | vlnb | 2017-03-07 20:36:45 -0800 (Tue, 07 Mar 2017) | 5 lines Linux kernel v4.10 build fix. Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> ........ r7106 | bvassche | 2017-04-11 11:48:36 -0700 (Tue, 11 Apr 2017) | 4 lines ib_srpt: Ensure that the BUG_ON() argument has no side effects Reported-by: David Butterfield <dab21774@gmail.com> ........ r7107 | vlnb | 2017-04-13 15:04:07 -0700 (Thu, 13 Apr 2017) | 7 lines The argument to sleep() would get "promoted" to an integer with value zero. - sleep(0.1); + usleep(100*1000); Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7108 | vlnb | 2017-04-13 15:30:25 -0700 (Thu, 13 Apr 2017) | 6 lines create_and_open_dev() returns a (-errno), so the "if (iser_fd...)" check should detect *any* negative return value as a case when fd should be set to -1. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7109 | vlnb | 2017-04-13 15:38:38 -0700 (Thu, 13 Apr 2017) | 8 lines Change memcpy() to strncpy() because the source name string is not guaranteed to exist as valid addressable memory beyond the NULL byte. Signed-off-by: David Butterfield <dab21774@gmail.com> with small addition to force set last byte NULL ........ r7110 | vlnb | 2017-04-13 16:02:18 -0700 (Thu, 13 Apr 2017) | 7 lines Thre is potential buffer overflow in iscsi_session_alloc() due to short computation of needed string size. Notice the "%s@%s" in the first call to sprintf(). Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7111 | vlnb | 2017-04-13 16:12:46 -0700 (Thu, 13 Apr 2017) | 8 lines iscsi: avoid a crash in iscsi_extracheck_is_rd_thread() Add an extra check in iscsi_extracheck_is_rd_thread() to avoid a crash when conn->rd_task is NULL. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7115 | vlnb | 2017-04-13 16:37:13 -0700 (Thu, 13 Apr 2017) | 12 lines scst: fix memory leak in scst_proc_group_add() Valgrind noticed that the "name" allocated in scst_proc_group_add() was leaking. It turns out that scst_alloc_add_acg makes its own copy of the name passed to it from this code, making the string duplication done here redundant (and leaky). The change eliminates the string duplication (along with all its associated error handling logic) and simply passes the (unowned) incoming string down for duplication below. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7116 | vlnb | 2017-04-13 16:39:14 -0700 (Thu, 13 Apr 2017) | 7 lines scst_vdisk: fix memory leak in vdisk_write_proc() Another leak valgrind popped out, this one in vdisk_write_proc(). Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7117 | vlnb | 2017-04-13 16:41:14 -0700 (Thu, 13 Apr 2017) | 9 lines scst: take scst_mutex before calling scst_del_free_acg() in exit_scst() scst_del_free_acg() does lockdep_assert_held(&scst_mutex), so we'd better take the lock before calling it. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7118 | vlnb | 2017-04-13 16:42:51 -0700 (Thu, 13 Apr 2017) | 8 lines scst: take scst_mutex before calling scst_del_free_acg() in scst_proc_cleanup_module() Take lock before a call that ends up at the lockdep_assert_held() in scst_del_free_acg() without locking. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7125 | vlnb | 2017-04-13 18:17:45 -0700 (Thu, 13 Apr 2017) | 6 lines extraclean does "rm tags cscope.out" Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7134 | vlnb | 2017-04-17 20:57:12 -0700 (Mon, 17 Apr 2017) | 5 lines iscsi-scst: replace strncpy() by strlcpy() Follow up for r7109: strlcpy() is more appropriate in this place. ........ r7135 | vlnb | 2017-04-17 21:02:44 -0700 (Mon, 17 Apr 2017) | 5 lines fcst: Linux kernel v4.10 build fix Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> ........ r7136 | vlnb | 2017-04-17 21:06:18 -0700 (Mon, 17 Apr 2017) | 5 lines scst: avoid possible side effect with WARN_ON_ONCE() Reported-By: David Butterfield <dab21774@gmail.com> ........ r7137 | vlnb | 2017-04-18 20:44:20 -0700 (Tue, 18 Apr 2017) | 5 lines fileio_tgt: change "#if DEBUG_TM_FN_IGNORE" to "#ifdef ..." Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7139 | vlnb | 2017-04-20 18:02:25 -0700 (Thu, 20 Apr 2017) | 7 lines iscsi-scstd: replace signal() with sigaction() Replace signal() with sigaction() for validity in a multithreaded process Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7141 | vlnb | 2017-04-20 18:11:37 -0700 (Thu, 20 Apr 2017) | 7 lines scst: set file size for NULLIO in PROCFS build The file size wasn't getting set for NULLIO with /proc support Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7143 | vlnb | 2017-04-20 18:32:07 -0700 (Thu, 20 Apr 2017) | 9 lines iscsi-scst: fix ENOMEM path In an error path in iscsi_threads_pool_get(), when a new pool cannot be allocated, if there is a pool on iscsi_thread_pools_list, it passes that back as an alternative, so return zero in that case. Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7152 | bvassche | 2017-04-26 16:53:11 -0700 (Wed, 26 Apr 2017) | 5 lines scst: Introduce scst_scsi_execute() This patch does not change any functionality but makes it easier to port SCST to Linux kernel v4.11. ........ r7153 | bvassche | 2017-04-26 17:17:22 -0700 (Wed, 26 Apr 2017) | 1 line scst: Port to Linux kernel v4.11 ........ r7154 | vlnb | 2017-04-28 17:58:55 -0700 (Fri, 28 Apr 2017) | 5 lines scst: create proc/scst_threads with mode S_IRUGO, not 0 Signed-off-by: David Butterfield <dab21774@gmail.com> ........ r7158 | bvassche | 2017-05-01 14:01:33 -0700 (Mon, 01 May 2017) | 1 line scst: Kernel v4.12 build fixes ........ r7162 | bvassche | 2017-05-02 07:13:15 -0700 (Tue, 02 May 2017) | 1 line scst_lib: Fix kernel 2.6.30 build ........ r7163 | bvassche | 2017-05-02 07:23:00 -0700 (Tue, 02 May 2017) | 1 line scst: Fix build for kernels before v2.6.39 ........ r7168 | bvassche | 2017-05-03 19:56:27 -0700 (Wed, 03 May 2017) | 1 line scst: Fix build for kernels before v2.6.39 ........ r7169 | vlnb | 2017-05-05 18:31:59 -0700 (Fri, 05 May 2017) | 3 lines scst: nolockdep patch for kernel 4.9 ........ r7170 | vlnb | 2017-05-10 20:51:32 -0700 (Wed, 10 May 2017) | 3 lines qla2x00t: update to kernel 4.10 ........ r7171 | vlnb | 2017-05-10 20:52:51 -0700 (Wed, 10 May 2017) | 3 lines scst: nolockdep patch for kernel 4.10 ........ r7173 | vlnb | 2017-05-10 21:00:29 -0700 (Wed, 10 May 2017) | 7 lines fcst: Linux kernel v4.11 build fix Linux kernel v4.11 build fix. Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> ........ r7175 | bvassche | 2017-05-13 17:42:24 -0700 (Sat, 13 May 2017) | 4 lines scst/include/backport.h: Remove duplicate definition of kthread_create_on_node() This patch reverts most of r7168. ........ r7176 | bvassche | 2017-05-13 17:55:39 -0700 (Sat, 13 May 2017) | 1 line scst/include/backport.h: Add a comment ........ r7177 | bvassche | 2017-05-13 19:55:24 -0700 (Sat, 13 May 2017) | 1 line scst/include/backport.h: Fix kthread_create_on_node() definition ........ r7178 | bvassche | 2017-05-13 20:06:54 -0700 (Sat, 13 May 2017) | 4 lines scst/include/backport.h: Add a kref_read() backport This patch does not change any functionality. ........ r7179 | bvassche | 2017-05-13 20:13:56 -0700 (Sat, 13 May 2017) | 4 lines scst/include/backport.h: Add a backport of rcu_dereference_protected() This patch does not change any functionality. ........ r7185 | bvassche | 2017-05-14 11:56:09 -0700 (Sun, 14 May 2017) | 14 lines scst_local: Fix a race condition Avoid that the following crash can occur: general protection fault: 0000 [#1] PREEMPT SMP RIP: 0010:scsi_is_host_device+0x7/0x20 [scsi_mod] Call Trace: scst_process_aens+0x95/0x1d0 [scst_local] scst_aen_work_fn+0x6f/0x120 [scst_local] process_one_work+0x20b/0x6c0 worker_thread+0x4e/0x4a0 kthread+0x113/0x150 ret_from_fork+0x31/0x40 ........ r7190 | vlnb | 2017-05-19 20:00:28 -0700 (Fri, 19 May 2017) | 8 lines scst: fix possible NULL dereference in TM code TM command accessing a non-existing LUN might lead NULL dereference in scst_call_dev_task_mgmt_fn_done(). Reported-By: <Ilan Steinberg <ilan.steinberg@kaminario.com>> ........ r7193 | vlnb | 2017-05-22 19:23:38 -0700 (Mon, 22 May 2017) | 5 lines qla2x00t: fix broken 4.9 kernels build Reported-By: Marc Smith <marc.smith@parodyne.com> ........ r7203 | vlnb | 2017-06-02 19:38:51 -0700 (Fri, 02 Jun 2017) | 3 lines Update to 4.11 kernels ........ r7208 | vlnb | 2017-06-12 20:58:26 -0700 (Mon, 12 Jun 2017) | 5 lines scst: Linux kernel v4.12 warning fix. Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> ........ git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/3.2.x@7209 d57e44dd-8a1f-0410-8b47-8ef2f437770f
User space FILEIO handler ========================= Version 3.2.0 ------------- User space program fileio_tgt uses interface of SCST's scst_user dev handler and allows to see how it works in various modes. Fileio_tgt provides mostly the same functionality as the kernel space SCST's scst_vdisk handler with the only exceptions that it supports O_DIRECT mode and doesn't support BLOCKIO one. O_DIRECT mode is basically the same as BLOCKIO, but also supports files, so for some loads it could be significantly faster, than the regular FILEIO access. All the words about BLOCKIO mode from SCST's README file apply to O_DIRECT mode as well. Installation ------------ Make sure you have installed SCST core, if not, see its README file for details how to do it. Then run "make all install" For the best performance make sure you don't have any debug options (i.e. lines like "CFLAGS += -DDEBUG" containing "-DDEBUG*" string) enabled in the Makefile. Usage ----- Load scst_user module using modprobe or insmod, then start fileio_tgt program. It can be used as the following: fileio_tgt [OPTION] name path Where: - OPTION - one or several not required options, see below. - name - name of the virtual device as it will be seen by SCST and used in the subsequent access management using the corresponding SCST interface. - path - path to the device file. The following options are supported: -b or --block=size: block size, must be power of 2 and >=512 -e or --threads=count: number of threads -t or --write_through: write through mode -r or --read_only: read only -o or --direct: O_DIRECT mode, see above for details -n or --nullio: NULLIO mode, see SCST's README file for details -c or --nv_cache: NV_CACHE mode, see SCST's README file for details -p or --parse=type: parse type, one of "std" (default), "call" or "excpt" -f or --on_free=type: on free call type, one of "ignore" (default) or "call" -m or --mem_reuse=type: Memory reuse type, one of "all" (default), "read", "write" or "none" -s or --prio_thread: Use separate thread for mgmt (prio) commands -l or --non_blocking: Use non-blocking operations Also in the debug builds the following options are supported: -d or --debug=level: debug tracing level -g or --debug_tm_ignore: turn on DEBUG_TM_IGNORE, one of the task management debugging features If you don't understand some these options, don't use them, default values provide the best performance. Vladislav Bolkhovitin <vst@vlnb.net>, http://scst.sourceforge.net