If the LED is being accessed by another process when we try to update
it, the update will be lost. Add a retry loop which will read the state
of the LED and update it until the LED is in the correct state. The
number of times this will occur is limited to ensure that the ZEDlet
won't hang ZED.
Refactor to remove duplication so setting of the LED occurs in only one
place.
Cleanup a couple of the warnings generated by shellcheck which weren't
the result of specific choices by the author. Several notes and warnings
are still present but removing them would make the code less clear or
require adding lines to tell shellcheck to ignore the warning.
Remove ",i" from the documentation at the top of the file which appears
to be a typographic error.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Christopher Voltz <christopher.voltz@hpe.com>
Closes#5795
Google moved their style guides to GitHub. Update the shell style guide
URL to the new location.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Christopher Voltz <christopher.voltz@hpe.com>
Closes#5797
- Pass $VDEV_ENC_SYSFS_PATH to 'zpool [iostat|status] -c' to include
enclosure LED sysfs path.
- Set LEDs correctly after import. This includes clearing any erroniously
set LEDs prior to the import, and setting the LED for any UNAVAIL drives.
- Include symlink for vdev_attach-led.sh in Makefile.am.
- Print the VDEV path in all-syslog.sh, and fix it so the pool GUID actually
prints.
Reviewed-by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#5716Closes#5751
CID 155928: Integer handling issues (DIVIDE_BY_ZERO)
In the current vdev label, the leaf count is always non-zero
but it doesn't hurt to check the count for future proofing.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@intel.com>
Closes#5749
Authored by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Ported-by: Don Brady <don.brady@intel.com>
OpenZFS-issue: https://www.illumos.org/issues/6866
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/3e4fae5Closes#5730
Porting Notes:
- Omitted the illumos-specific `/dev/dsk` and `/dev/rdsk`
path conversions since they don't apply on linux.
When dumping the ZFS vdev label with 'zdb -ll', also dump
some nvlist stats to help analyze the current footprint.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Don Brady <don.brady@intel.com>
Closes#5724
This is effectively dead code for the Linux implementation which can
be removed to improve readability. We want to linter to check the
real production/debug build as much as possible.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes#5722
This patch adds the necessary infrastructure for ABD to make use
of the vectorized fletcher 4 routines.
- export ABD compatible interface from fletcher_4
- add ABD fletcher_4 tests for data and metadata ABD types.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Original-patch-by: Gvozden Neskovic <neskovic@gmail.com>
Signed-off-by: David Quigley <david.quigley@intel.com>
Closes#5589
There are two cases:
1. if an invalid flag is passed, and
2. if a valid flag is not given a parameter.
In the case of (1), the flag is either short or long. For short flags,
optopt contains the character of the flag. For long, it contains zero,
and we can access the long flag using argv and optind.
In the case of (2), if the flag is short, optopt contains the character
of the flag. If the flag is long, the value in the 4th column of the
long_options table, for that flag, is returned.
We could case over all those values, or we could simply use argv and
optind again.
Note that in the case of something like `--resume`, which is also `-t`,
"t" will be returned if an argument is not provided; so the error
message will say `'t': argument not provided` or similar. This could be
fixed by making it so long and short options don't use the same
character flag, and then combining them in the switch/case statement,
but I didn't think the ugliness of the code would be worth the small
usability enhancement.
Authored by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Steve Gonczi <steve.gonczi@delphix.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/7742
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/6d69b40Closes#5702
Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Steve Gonczi <steve.gonczi@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Porting Notes: Moved reference_tracking_enable and
reference_history outside of ZFS_DEBUG.
OpenZFS-issue: https://www.illumos.org/issues/7545
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/4dd77f9Closes#5701
Authored by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Approved by: Gordon Ross <gordon.w.ross@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/7502
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c3c65d1Closes#5677
Porting notes:
- 'zfs_dbgmsg_print()' reintroduced to userspace.
Authored by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/7277
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/29bdd2fCloses#5684
Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/7163
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/f34284dCloses#4484Closes#5661
Authored by: Chris Williamson <chris.williamson@delphix.com>
Reviewed by: - Matthew Ahrens <mahrens@delphix.com>
Reviewed by: - Paul Dagnelie <pcd@delphix.com>
Approved by: - Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/7253
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/754998cCloses#5660
Porting notes:
- Many changes were already made in ZoL (for ex. in d4ed66734).
Authored by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
OpenZFS-issue: https://www.illumos.org/issues/6872
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/f83b46bCloses#5640
Porting notes:
- Several direct callers of zk_thread_create() are passing TS_RUN for the
length. The `len` and `state` were inverted,this commit fixes them.
Authored by: Eli Rosenthal <eli.rosenthal@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov mail@gmelikov.ru
OpenZFS-issue: https://www.illumos.org/issues/6871
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/8fc9228Closes#5621
The local mg variable is unused in non-debug builds.
Wrap the variable in ASSERTV() so that it's only present
in the debug build. Introduced by OpenZFS 7303.
Reviewed-by: Don Brady <don.brady@intel.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#5616
Porting Notes:
- Many of the fixes proposed by this patch were already applied.
In the cases where a different but equivalent fix was made the
code was updated with the OpenZFS version to minimize differences.
Authored by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/6550
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c16bcc4Closes#5591
Porting Notes:
- Many of the fixes proposed by this patch were already applied.
In the cases where a different but equivalent fix was made the
code was updated with the OpenZFS version to minimize differences.
- The zpool_get_vdev_by_name() function was previously removed
by commit 235db0a.
Authored by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Haakan T Johansson <f96hajo@chalmers.se>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/6551
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/b327cd3Closes#5590
This change introduces a new weighting algorithm to improve
metaslab selection. The new weighting algorithm relies on the
SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight
now encodes the type of weighting algorithm used (size-based
vs segment-based).
Porting Notes: The metaslab allocation tracing code is conditionally
removed on linux (dependent on mdb debugger).
Authored by: George Wilson <george.wilson@delphix.com>
Reviewed by: Alex Reece <alex@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Pavel Zakharov pavel.zakharov@delphix.com
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Don Brady <don.brady@intel.com>
OpenZFS-issue: https://www.illumos.org/issues/7303
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d5190931bdCloses#5404
Authored by: David Schwartz <dschwartz783@gmail.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
I find that this is a lot easier to read. "not don't close" is somewhat tough on the eyes.
OpenZFS-issue: https://www.illumos.org/issues/6637
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d189620Closes#5572
Running arc_summary.py with a l2arc cache device around produces
the following error:
Traceback (most recent call last):
File "/usr/bin/arc_summary.py", line 1148, in <module>
main()
File "/usr/bin/arc_summary.py", line 1144, in main
page(Kstat)
File "/usr/bin/arc_summary.py", line 724, in _l2arc_summary
arc["l2_arc_evicts"]["reading"] > 0:
TypeError: unorderable types: str() > int()
This is due to arc["l2_arc_evicts"]['lock_retries'] and
arc["l2_arc_evicts"]["reading"] both being strings, returned
from fHits() earlier. Rather than adding them up and checking
if the result is > 0, this checks if either string is != '0'.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes#5538
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Haakan T Johansson <f96hajo@chalmers.se>
Closes#5547Closes#5543
CID 147587: Out-of-bounds read
Future changes may cause an array overrun of 4096 bytes at byte
offset 4096 by dereferencing pointer dstp. Adding this additional
check ensures correctness.
Reviewed-by: Chunwei Chen <david.chen@osnexus.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: GeLiXin <ge.lixin@zte.com.cn>
Closes#5297
zpool iostat allows you to specify only certain vdevs to display.
Currently, if you run 'zpool iostat -c CMD vdev1 vdev2 ...'
on specific vdevs, it will actually run the command on *all* vdevs,
and just display the results for the vdevs you specify. This patch
corrects the behavior to only run the command on the specified vdevs,
and also enables the zpool_iostat_005_pos.ksh tests.
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#5443
CID 147534: Negative array index read
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: cao.xuewen <cao.xuewen@zte.com.cn>
Closes#5467
Enable picky cstyle checks and resolve the new warnings. The vast
majority of the changes needed were to handle minor issues with
whitespace formatting. This patch contains no functional changes.
Non-whitespace changes are as follows:
* 8 times ; to { } in for/while loop
* fix missing ; in cmd/zed/agents/zfs_diagnosis.c
* comment (confim -> confirm)
* change endline , to ; in cmd/zpool/zpool_main.c
* a number of /* BEGIN CSTYLED */ /* END CSTYLED */ blocks
* /* CSTYLED */ markers
* change == 0 to !
* ulong to unsigned long in module/zfs/dsl_scan.c
* rearrangement of module_param lines in module/zfs/metaslab.c
* add { } block around statement after for_each_online_node
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Håkan Johansson <f96hajo@chalmers.se>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#5465
Do not force VDEV_NAME_TYPE_ID in max_width(), instead add it
in the relevant calls to max_width().
The first location of max_width() where VDEV_NAME_TYPE_ID is
now added in show_import() is followed by print_import_config() and
print_logs(). Both these print children vdev names that have been
retrieved using an explicit VDEV_NAME_TYPE_ID added.
The second location is in status_callback(). This is followed by
print_status_config(), print_logs(), print_l2cache(), and
print_spares(). For l2cache and spares it should not matter as there
are no mirror-X or raidz-X involved. print_status_config() as above
retrieves the name using explicit VDEV_NAME_TYPE_ID before
calling itself to print children.
The call of max_width() in get_namewidth() is not changed, as this is
used by zpool_do_iostat(), followed by print_iostat(), which does not
add VDEV_NAME_TYPE_ID.
Overall, we should consider adding VDEV_NAME_TYPE_ID to the
relevant name_flags / cb_name_flags fields, and remove the explicit
adding in called routines.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Haakan T Johansson <f96hajo@chalmers.se>
Closes#5401
ZFS currently uses ARC buffers which are backed by virtual memory.
While functional, there are some major problems with this approach
which can be observed on all OpenZFS platforms. ABD was designed
to address these issues and includes contributions from OpenZFS
developers from multiple platforms.
While all OpenZFS platforms will benefit from ABD this functionality
is critical for Linux. Unlike the other OpenZFS platforms the Linux
kernel discourages extensive use of virtual memory. The provided
interfaces are not optimized for frequent allocations from the virtual
address space. To maintain good performance a kmem cache is
used which contains relatively long lived slabs backed by virtual
memory. The downside to the approach is that those slabs can
become highly fragmented resulting in an inefficient use of memory.
Another issue is that on 32-bit systems the available virtual
address space in the kernel is only a small fraction of total
system memory. This means the ARC size is highly constrained
which hurts performance and make allocating memory difficult
and OOMs more likely.
ABD is designed to address these issues by using scatter lists
of pages for data buffers. This removes the need for slabs
which resolves the fragmentation issue. It also allows high
memory pages to be allocated which alleviates the virtual
address space pressure on 32-bit systems.
For metadata buffers, which are small, linear ABDs are allocated
from the slab. This is preferable because there are many places
in the code which expect to be able to read from a given offset
in the buffer. Using linear ABDs means none of that code needs
to be modified. The majority of these buffers are allocated with
kmalloc so there's minimal impact of the virtual address space.
Tested-by: Kash Pande <kash@tripleback.net>
Tested-by: kernelOfTruth <kerneloftruth@gmail.com>
Tested-by: RageLtMan <rageltman@sempervictus>
Tested-by: DHE <git@dehacked.net>
Reviewed-by: Chunwei Chen <david.chen@osnexus.com>
Reviewed-by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed-by: David Quigley <david.quigley@intel.com>
Reviewed-by: Gvozden Neskovic <neskovic@gmail.com>
Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Isaac Huang <he.huang@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#3441Closes#5135
Enable vectorized raidz code on ABD buffers. The avx512f,
avx512bw, neon and aarch64_neonx2 are disabled in this commit.
With the exception of avx512bw these implementations are
updated for ABD in the subsequent commits.
Signed-off-by: Gvozden Neskovic <neskovic@gmail.com>
Otherwise, the checksum function pointer isn't initialized.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes#5411
This patch adds a command (-c) option to zpool status and zpool iostat. The
-c option allows you to run an arbitrary command on each vdev and display
the first line of output in zpool status/iostat. The environment vars
VDEV_PATH and VDEV_UPATH are set to the vdev's path and "underlying path"
before running the command. For device mapper, multipath, or partitioned
vdevs, VDEV_UPATH is the actual underlying /dev/sd* disk. This can be useful
if the command you're running requires a /dev/sd* device.
The patch also uses /sys/block/<dev>/slaves/ to lookup the underlying device
instead of using libdevmapper. This not only removes the libdevmapper
requirement at build time, but also allows you to resolve device mapper
devices without being root. This means that UDEV_UPATH get set correctly
when running zpool status/iostat as an unprivileged user.
Example:
$ zpool status -c 'echo I am $VDEV_PATH, $VDEV_UPATH'
NAME STATE READ WRITE CKSUM
mypool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
mpatha ONLINE 0 0 0 I am /dev/mapper/mpatha, /dev/sdc
sdb ONLINE 0 0 0 I am /dev/sdb1, /dev/sdb
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#5368
Allow `zfs unshare <protocol> -a` command to share or unshare all datasets
of a given protocol, nfs or smb.
Additionally, enable most of ZFS Test Suite zfs_share/zfs_unshare test cases.
To work around some Illumos-specific functionalities ($SHARE/$UNSHARE) some
function wrappers were added around them.
Finally, fix and issue in smb_is_share_active() that would leave SMB shares
exported when invoking 'zfs unshare -a'
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes#3238Closes#5367
Now that ZED has internal fault diagnosis and the statechange event
is generated for faulted states, we can replace the io-notify and
checksum-notify zedlets with one based on statechange.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@intel.com>
Closes#5383
These were named in the zed/Makefile.am as vdev_clear-blinkled.sh
and statechange-blinkled.sh causing bad symlinks to be created.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes#5384
The phase 2 work primarily entails the Diagnosis Engine and
the Retire Agent modules. It also includes infrastructure
to support a crude FMD environment to host these modules.
The Diagnosis Engine consumes I/O and checksum ereports and
feeds them into a SERD engine which will generate a corres-
ponding fault diagnosis when the SERD engine fires. All the
diagnosis state data is collected into cases, one case per
vdev being tracked.
The Retire Agent responds to diagnosed faults by isolating
the faulty VDEV. It will notify the ZFS kernel module of
the new VDEV state (degraded or faulted). This agent is
also responsible for managing hot spares across pools.
When it encounters a device fault or a device removal it
replaces the device with an appropriate spare if available.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@intel.com>
Closes#5343
The previous autoreplace code assumed that if you were using autoreplace, then
you also had the enclosure SES driver loaded. This could lead to autoreplace
not working if the SES driver wasn't loaded, or if it wasn't creating the
proper enclosure_device symlinks (which has happened). This patch removes
that assumption.
Reviewed by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#5363
