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* Handle concurrent snapshot automounts failing due to EBUSY.Tim Chase2013-11-081-1/+1
| | | | | | | | | | | | | | | In the current snapshot automount implementation, it is possible for multiple mounts to attempted concurrently. Only one of the mounts will succeed and the other will fail. The failed mounts will cause an EREMOTE to be propagated back to the application. This commit works around the problem by adding a new exit status, MOUNT_BUSY to the mount.zfs program which is used when the underlying mount(2) call returns EBUSY. The zfs code detects this condition and treats it as if the mount had succeeded. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1819
* Illumos #3956, #3957, #3958, #3959, #3960, #3961, #3962George Wilson2013-11-051-5/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3956 ::vdev -r should work with pipelines 3957 ztest should update the cachefile before killing itself 3958 multiple scans can lead to partial resilvering 3959 ddt entries are not always resilvered 3960 dsl_scan can skip over dedup-ed blocks if physical birth != logical birth 3961 freed gang blocks are not resilvered and can cause pool to suspend 3962 ztest should print out zfs debug buffer before exiting Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Approved by: Richard Lowe <[email protected]> References: https://www.illumos.org/issues/3956 https://www.illumos.org/issues/3957 https://www.illumos.org/issues/3958 https://www.illumos.org/issues/3959 https://www.illumos.org/issues/3960 https://www.illumos.org/issues/3961 https://www.illumos.org/issues/3962 illumos/illumos-gate@b4952e17e8858d3225793b28788278de9fe6038d Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Porting notes: 1. zfs_dbgmsg_print() is only used in userland. Since we do not have mdb on Linux, it does not make sense to make it available in the kernel. This means that a build failure will occur if any future kernel patch depends on it. However, that is unlikely given that this functionality was added to support zdb. 2. zfs_dbgmsg_print() is only invoked for -VVV or greater log levels. This preserves the existing behavior of minimal noise when running with -V, and -VV. 3. In vdev_config_generate() the call to nvlist_alloc() was not changed to fnvlist_alloc() because we must pass KM_PUSHPAGE in the txg_sync context.
* Illumos #3949, #3950, #3952, #3953George Wilson2013-11-051-2/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 3949 ztest fault injection should avoid resilvering devices 3950 ztest: deadman fires when we're doing a scan 3951 ztest hang when running dedup test 3952 ztest: ztest_reguid test and ztest_fault_inject don't place nice together Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Approved by: Richard Lowe <[email protected]> References: https://www.illumos.org/issues/3949 https://www.illumos.org/issues/3950 https://www.illumos.org/issues/3951 https://www.illumos.org/issues/3952 illumos/illumos-gate@2c1e2b44148432fb7a509dd216a99299b6740250 Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775 Porting notes: 1. The deadman thread was removed from ztest during the original port because it depended on Solaris thr_create() interface. This functionality should be reintroduced using the more portable pthreads.
* Illumos #3955Matthew Ahrens2013-11-051-0/+3
| | | | | | | | | | | | | | | | | 3955 ztest failure: assertion refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: George Wilson <[email protected]> Approved by: Richard Lowe <[email protected]> References: https://www.illumos.org/issues/3955 illumos/illumos-gate@be9000cc677e0a8d04e5be45c61d7370fc8c7b54 Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775
* Illumos #3112, #3113, #3114Matthew Ahrens2013-11-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 3112 ztest does not honor ZFS_DEBUG 3113 ztest should use watchpoints to protect frozen arc bufs 3114 some leaked nvlists in zfsdev_ioctl Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Matt Amdur <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Christopher Siden <[email protected]> Approved by: Eric Schrock <[email protected]> References: https://www.illumos.org/issues/3112 https://www.illumos.org/issues/3113 https://www.illumos.org/issues/3114 illumos/illumos-gate@cd1c8b85eb30b568e9816221430c479ace7a559d The /proc/self/cmd watchpoint interface is specific to Solaris. Therefore, the #3113 implementation was reworked to use the more portable mprotect(2) system call. When the pages are watched they are marked read-only for protection. Any write to the protected address range immediately trigger a SIGSEGV. The pages are marked writable again when they are unwatched. Ported-by: Brian Behlendorf <[email protected]> Issue #1489
* Illumos #3236George Wilson2013-11-051-2/+39
| | | | | | | | | | | | | | | | | | | | 3236 zio nop-write Reviewed by: Matt Ahrens <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Christopher Siden <[email protected]> Approved by: Garrett D'Amore <[email protected]> References: illumos/illumos-gate@80901aea8e78a2c20751f61f01bebd1d5b5c2ba5 https://www.illumos.org/issues/3236 Porting Notes 1. This patch is being merged dispite an increased instance of https://www.illumos.org/issues/3113 being triggered by ztest. Ported-by: Brian Behlendorf <[email protected]> Issue #1489
* Illumos #3894Keith M Wesolowski2013-11-041-0/+6
| | | | | | | | | | | | | | 3894 zfs should not allow snapshot of inconsistent dataset Reviewed by: Matthew Ahrens <[email protected]> Approved by: Gordon Ross <[email protected]> References: https://www.illumos.org/issues/3894 illumos/illumos-gate@ca48f36f20f6098ceb19d5b084b6b3d4b8eca9fa Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775
* Illumos #3740Steven Hartland2013-11-043-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3740 Poor ZFS send / receive performance due to snapshot hold / release processing Reviewed by: Matthew Ahrens <[email protected]> Approved by: Christopher Siden <[email protected]> References: https://www.illumos.org/issues/3740 illumos/illumos-gate@a7a845e4bf22fd1b2a284729ccd95c7370a0438c Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775 Porting notes: 1. 13fe019870c8779bf2f5b3ff731b512cf89133ef introduced a merge conflict in dsl_dataset_user_release_tmp where some variables were moved outside of the preprocessor directive. 2. dea9dfefdd747534b3846845629d2200f0616dad made the previous merge conflict worse by switching KM_SLEEP to KM_PUSHPAGE. This is notable because this commit refactors the code, adding a new KM_SLEEP allocation. It is not clear to me whether this should be converted to KM_PUSHPAGE. 3. We had a merge conflict in libzfs_sendrecv.c because of copyright notices. 4. Several small C99 compatibility fixed were made.
* Illumos #3745, #3811Will Andrews2013-11-041-8/+29
| | | | | | | | | | | | | | | | | 3745 zpool create should treat -O mountpoint and -m the same 3811 zpool create -o altroot=/xyz -O mountpoint=/mnt ignores the mountpoint option Reviewed by: Matthew Ahrens <[email protected]> Approved by: Christopher Siden <[email protected]> References: https://www.illumos.org/issues/3745 https://www.illumos.org/issues/3811 illumos/illumos-gate@8b713775314bbbf24edd503b4869342d8711ce95 Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775
* Illumos #3603, #3604: bobj improvementsMatthew Ahrens2013-10-311-17/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | 3603 panic from bpobj_enqueue_subobj() 3604 zdb should print bpobjs more verbosely 3871 GCC 4.5.3 does not like issue 3604 patch Reviewed by: Henrik Mattson <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Garrett D'Amore <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/3603 https://www.illumos.org/issues/3604 https://www.illumos.org/issues/3871 illumos/illumos-gate@d04756377ddd1cf28ebcf652541094e17b03c889 Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1775 Note that the patch from Illumos issue 3871 is not accepted into Illumos at the time of this writing. It is something that I wrote when porting this. Documentation is in the Illumos issue.
* Add -p switch to "zpool get"Ralf Ertzinger2013-10-281-8/+27
| | | | | | | | This works the same as the -p switch to "zfs get", displaying full resolution values for appropriate attributes. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1813
* Corrected "zfs list -t <type>" syntaxSteven Hartland2013-10-251-1/+1
| | | | | | | in man page and in command help. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1805
* Add dbufstat.py commandBrian Behlendorf2013-10-254-6/+543
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The dbufstat.py command was added to provide a conveniant way to easily determine what ZFS is caching. The script consumes the raw /proc/spl/kstat/zfs/dbufs kstat data can consolidates it in to a more human readable form. This was designed primarily as a tool to aid developers but it may also be useful for advanced users who want more visibility in to what the ARC is caching. When run without options dbufstat.py will default to showing a list of all objects with at least one buffer present in the cache. The total cache space consumed by that object will be printed on the right along with the object type. Similar to the arcstats.py command the -x option may used to display additional fields. Two other modes of operation are also supported by dbufstat.py and the expectation is additional display modes may be added as needed. The -t option will summerize the total number of bytes cached for each object type, and the -b option will show every dbuf currently cached. The script was designed to be consistent with arcstat.py and includes most of the same options and funcationality. Signed-off-by: Prakash Surya <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* Increase default udev wait timeBrian Behlendorf2013-10-221-1/+1
| | | | | | | | | | | | | | | | | | When creating a new pool, or adding/replacing a disk in an existing pool, partition tables will be automatically created on the devices. Under normal circumstances it will take less than a second for udev to create the expected device files under /dev/. However, it has been observed that if the system is doing heavy IO concurrently udev may take far longer. If you also throw in some cheap dodgy hardware it may take even longer. To prevent zpool commands from failing due to this the default wait time for udev is being increased to 30 seconds. This will have no impact on normal usage, the increase timeout should only be noticed if your udev rules are incorrectly configured. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1646
* Dedup-related documentation additions for zpool and zdb.Tim Chase2013-10-221-1/+1
| | | | | | | | | | | | | Document the "-D" and "-T" options and the optional interval and count or "zpool status". Also for zpool's man page, use a consistent order for the various "-T" options to match the program's help output. Document the effect of additional "-D" options for zdb. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1786
* Generate libraries with correct DT_NEEDED entriesRichard Yao2013-10-108-11/+7
| | | | | | | | | | | | | | | | | | | | Libraries that depend on other libraries should list them in ELF's DT_NEEDED field so that programs linking to them do not need to specify those libraries unless they depend on them as well. This is not the case in the current code and the consequence is that anything that needs a library must know its dependencies. This is fragile and caused GRUB2's configure script to break when a dependency was added on libblkid in libzfs. This resolves that problem by using LIBADD/LDADD to specify libraries in Makefile.am instead of LDFLAGS. This ensures that proper DT_NEEDED entries are generated and prevents GRUB2's configure script from breaking in the presence of a libblkid dependency. This also removes unneeded dependencies from various files. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1751
* Update drive databaseRichard Yao2013-10-091-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Corsair Force GS drive (obtained from drive_id) Add Kingston HyperX 3K (obtained from drive_id) Add OCZ Vertex 4 drive (obtained from drive_id) Add Samsung SM843T enterprise drive (obtained from drive_id) Add entries for additional sizes of Intel 320/330/335/520 series Add Cruical C400 (obtained from Illumos user's sd.conf) Add Toshiba SSD (obtained from Illumos user's sd.conf) Add Samsung's first SLC SSD (obtained from drive_id) Add OCZ Core Series (obtained from drive_id) Add Intel DC S3700 (obtained from drive_id) Notes: 1. The drive identifer obtained for the Samsung SM843T was MZ7WD480. The rest were extrapolated. The additional entries were checked with Google to verify that such drives exist in the wild. 2. The additional entries for Intel drives were extrapolated from existing entries. The additional entries were checked with Google to verify that such drives exist in the wild. 3. The "ATA C400-MTFDDAC512M" and "ATA TOSHIBA THNSNH51" entries are from the sd.conf of gcbirzan on freenode. Additional entries were extrapolated from them and checked with Google. 4. I obtained the Samsung MCCOE64G entry from an actual drive. The Samsung MCCOE32G entry was extrapolated from it and checked with Google. 5. I obtained the SSDSC2BA10 from a 100GB Intel DC S3700 drive and extrapolated the entries for the additional models. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1752
* Illumos #3464Matthew Ahrens2013-09-044-152/+198
| | | | | | | | | | | | | | | | | 3464 zfs synctask code needs restructuring Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Christopher Siden <[email protected]> Approved by: Garrett D'Amore <[email protected]> References: https://www.illumos.org/issues/3464 illumos/illumos-gate@3b2aab18808792cbd248a12f1edf139b89833c13 Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1495
* Illumos #2882, #2883, #2900Matthew Ahrens2013-09-046-124/+235
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2882 implement libzfs_core 2883 changing "canmount" property to "on" should not always remount dataset 2900 "zfs snapshot" should be able to create multiple, arbitrary snapshots at once Reviewed by: George Wilson <[email protected]> Reviewed by: Chris Siden <[email protected]> Reviewed by: Garrett D'Amore <[email protected]> Reviewed by: Bill Pijewski <[email protected]> Reviewed by: Dan Kruchinin <[email protected]> Approved by: Eric Schrock <[email protected]> References: https://www.illumos.org/issues/2882 https://www.illumos.org/issues/2883 https://www.illumos.org/issues/2900 illumos/illumos-gate@4445fffbbb1ea25fd0e9ea68b9380dd7a6709025 Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1293 Porting notes: WARNING: This patch changes the user/kernel ABI. That means that the zfs/zpool utilities built from master are NOT compatible with the 0.6.2 kernel modules. Ensure you load the matching kernel modules from master after updating the utilities. Otherwise the zfs/zpool commands will be unable to interact with your pool and you will see errors similar to the following: $ zpool list failed to read pool configuration: bad address no pools available $ zfs list no datasets available Add zvol minor device creation to the new zfs_snapshot_nvl function. Remove the logging of the "release" operation in dsl_dataset_user_release_sync(). The logging caused a null dereference because ds->ds_dir is zeroed in dsl_dataset_destroy_sync() and the logging functions try to get the ds name via the dsl_dataset_name() function. I've got no idea why this particular code would have worked in Illumos. This code has subsequently been completely reworked in Illumos commit 3b2aab1 (3464 zfs synctask code needs restructuring). Squash some "may be used uninitialized" warning/erorrs. Fix some printf format warnings for %lld and %llu. Apply a few spa_writeable() changes that were made to Illumos in illumos/illumos-gate.git@cd1c8b8 as part of the 3112, 3113, 3114 and 3115 fixes. Add a missing call to fnvlist_free(nvl) in log_internal() that was added in Illumos to fix issue 3085 but couldn't be ported to ZoL at the time (zfsonlinux/zfs@9e11c73) because it depended on future work.
* Implement database to workaround misreported physical sector sizesRichard Yao2013-08-221-4/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This implements vdev_bdev_database_check(). It alters the detected sector size of any device listed in a database of drives known to lie about their physical sector sizes. This is based on "6931570 Add flash devices' VID/PID to disk table to advertising 4K physical sector size" from Open Solaris and on sg_simple4.c from sg3_utils. About two dozen lines are taken from sg_simple4.c, which is GPLv2 licensed. However, sg_simple4.c is analogous to a Hello World program and is safe for us to use. We requested that Douglas Gilbert, the author of sg_simple4.c, confirm that this is the case. A cutdown version of his response is as follows: ``` I would consider a SCSI INQUIRY example using the Linux sg driver interface (also written by me) as the equivalent of an "hello world" program in C. ``` The database was created with the help of the freenode and ZFSOnLinux communities. Some notes: 1. The following drives both were confirmed to lie via reports in IRC and they contain capacity information in their identifiers: INTEL SSDSA2M080 INTEL SSDSA2M160 M4-CT256M4SSD2 WDC WD15EARS-00S WDC WD15EARS-00Z WDC WD20EARS-00M The identifiers for different capacity models were extrapolated and added under the assumption that those models also lie. Google was used to verify that the extrapolated drive identifiers existed prior to their inclusion. 2. The OCZ-VERTEX2 3.5 identifer applies to two drives that differ solely in page size (and slightly in capacity). One uses 4096-byte pages and the other uses 8192-byte pages. Both are set to use 8192-byte pages. We could detect the page size by checking the capacity, but that would unnecessarily complicate the code. 3. It is possible for updated drive firmware to correctly report the sector size. There were reports of a few advanced format drives doing that. One report stated that the vendor changed the identification string while another was unclear on this. Both reports involved WDC models. 4. Google was used to determine the size of pages in the listed flash devices. Reports of 8192-byte pages took precedence over reports of 4096-byte pages. 5. Devices behind USB adapters can have their identification strings altered. Identification strings obtained across USB adapters are omitted and no attempt is made to correct for alterations made by USB adapters when doing comparisons against the database. Two entries in the Open Solaris database that appear to have been altered by a USB adapter were omitted. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1652
* Don't specifically open /etc/mtab - it is done in libzfs_init()Turbo Fredriksson2013-08-151-8/+3
| | | | | | | a few lines further down and we can share the open file handle. Signed-off-by: Brian Behlendorf <[email protected]> Issue #1498
* Use setmntent() OR fopen()Turbo Fredriksson2013-08-151-0/+4
| | | | | | | | For the same reasons it's used in libzfs_init(), this was just overlooked because zinject gets minimal use. Signed-off-by: Brian Behlendorf <[email protected]> Issue #1498
* Illumos #3098 zfs userspace/groupspace failYuri Pankov2013-08-141-10/+9
| | | | | | | | | | | | | | 3098 zfs userspace/groupspace fail without saying why when run as non-root Reviewed by: Eric Schrock <[email protected]> Approved by: Richard Lowe <[email protected]> References: https://www.illumos.org/issues/3098 illumos/illumos-gate@70f56fa69343b013f47e010537cff8ef3a7a40a5 Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1596
* Fix 'zpool list -H' error codeBrian Behlendorf2013-07-231-1/+1
| | | | | | | | Due to an uninitialized variable it was possible for the command 'zpool list -H' to return a non-zero error when there are no pools. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1605
* Add missing -v to usage help for zpool list.Christer Ekholm2013-07-221-1/+1
| | | | Signed-off-by: Brian Behlendorf <[email protected]>
* Add FreeBSD 'zpool labelclear' commandDmitry Khasanov2013-07-091-0/+127
| | | | | | | | | | | | | The FreeBSD implementation of zfs adds the 'zpool labelclear' command. Since this functionality is helpful and straight forward to add it is being included in ZoL. References: freebsd/freebsd@119a041dc9230275239a8de68c534c0754181e7e Ported-by: Dmitry Khasanov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1126
* zdb: enhancement - Display SA xattrs.Tim Chase2013-07-091-0/+56
| | | | | | | | | | | | | | | | If the znode has SA xattrs, display them following the other standard attributes. The format used is similar to that used when listing the contents of a ZAP. It is as follows: $ zdb -vvv <pool>/<dataset> <object> ... SA xattrs: <size> bytes, <number> entries <name1> = <value1> <name2> = <value2> ... Signed-off-by: Brian Behlendorf <[email protected]> Closes #1581
* Avoid abort() in vn_rdwr(): libzpool/kernel.cMike Leddy2013-07-091-1/+1
| | | | | | | | Make sure that buffer is aligned to 512 bytes on linux so that pread call combined with O_DIRECT does not return EINVAL. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1570
* Explicitly flush output at end of each zeventCraig Loomis2013-07-081-0/+1
| | | | | | | | For "zpool events -f" flush stdout to ensure the last zevent is always printed immediately. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1568
* Fix parse_dataset error handlingBrian Behlendorf2013-07-031-4/+6
| | | | | | | | | | | | A mount failure was accidentally introduced by commit 0c1171d which reworked the parse_dataset() function to read pool names from devices. The error case where a label is read from the device but the pool name/value pair doesn't exist was not handled properly. In this case we should fall back to the previous behavior. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1560
* Illumos #3498 panic in arc_read()George Wilson2013-07-021-4/+3
| | | | | | | | | | | | | | 3498 panic in arc_read(): !refcount_is_zero(&pbuf->b_hdr->b_refcnt) Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Approved by: Richard Lowe <[email protected]> References: illumos/illumos-gate@1b912ec7100c10e7243bf0879af0fe580e08c73d https://www.illumos.org/issues/3498 Ported-by: Brian Behlendorf <[email protected]> Closes #1249
* Use MAXPATHLEN instead of sizeof in snprintfRichard Yao2013-07-021-1/+1
| | | | | | | | | | | | | | | | | This silences a GCC 4.8.0 warning by fixing a programming error caught by static analysis: ../../cmd/ztest/ztest.c: In function ‘ztest_vdev_aux_add_remove’: ../../cmd/ztest/ztest.c:2584:33: error: argument to ‘sizeof’ in ‘snprintf’ call is the same expression as the destination; did you mean to provide an explicit length? [-Werror=sizeof-pointer-memaccess] (void) snprintf(path, sizeof (path), ztest_aux_template, ^ Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1480
* Override default SPA config location via environmentCyril Plisko2013-07-011-0/+10
| | | | | | | | | | | | | When using zdb with non-default SPA config file it is not convenient to add -U <non-default-config-file-path> all the time. This commit introduces support for setting/overriding SPA config location via environment variable 'SPA_CONFIG_PATH'. If -U flag is specified in the command line it will override any other value as usual. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1545
* Add absent \n at the end of the help text lineCyril Plisko2013-06-281-1/+1
| | | | | Signed-off-by: Brian Behlendorf <[email protected]> Issue #1545
* Allow fetching the pool from the device at mountBrian Behlendorf2013-06-261-4/+42
| | | | | | | | | | | To simplify integration with the xfstests test suite the mount.zfs helper has been extended. When passed a block device (/dev/sdX) to mount, instead of a pool/dataset, the pool name will be read from any existing zfs label and used. This allows you to mount the root dataset of a zfs filesystem by specifing any of the member vdevs. Signed-off-by: Brian Behlendorf <[email protected]>
* Illumos #3552, #3564George Wilson2013-06-191-6/+6
| | | | | | | | | | | | | | | | | | 3552 condensing one space map burns 3 seconds of CPU in spa_sync() thread 3564 spa_sync() spends 5-10% of its time in metaslab_sync() (when not condensing) Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Approved by: Richard Lowe <[email protected]> References: illumos/illumos-gate@16a4a8074274d2d7cc408589cf6359f4a378c861 https://www.illumos.org/issues/3552 https://www.illumos.org/issues/3564 Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1513
* Illumos #3006Madhav Suresh2013-06-191-13/+13
| | | | | | | | | | | | | | | | | | | | 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Reviewed by Matt Ahrens <[email protected]> Reviewed by George Wilson <[email protected]> Approved by Eric Schrock <[email protected]> References: illumos/illumos-gate@fb09f5aad449c97fe309678f3f604982b563a96f https://illumos.org/issues/3006 Requires: zfsonlinux/spl@1c6d149feb4033e4a56fb987004edc5d45288bcb Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1509
* Modified arcstat.py to run on linuxChrist Schlacta2013-06-183-20/+8
| | | | | | | | | * Modified kstat_update() to read arcstats from proc. * Fix shebang. * Added Makefile.am entries for arcstat.py Signed-off-by: Brian Behlendorf <[email protected]> Closes #1506
* Added arcstat.py from FreeNASChrist Schlacta2013-06-181-0/+454
| | | | | | | | Original source: http://support.freenas.org/browser/nanobsd/Files/usr/local/bin/arcstat.py Signed-off-by: Brian Behlendorf <[email protected]> Issue #1506
* Don't leak mount flags into kernelNed Bass2013-06-181-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | When calling mount(), care must be taken to avoid passing in flags that are used only by the user space utilities. Otherwise we may stomp on flags that are reserved for other purposes in the kernel. In particular, openSUSE 12.3 kernels have added a new MS_RICHACL super-block flag whose value conflicts with our MS_COMMENT flag. This causes incorrect behavior such as the umask being ignored. The MS_COMMENT flag essentially serves as a placeholder in the option_map data structure of zfs_mount.c, but its value is never used. Therefore we can avoid the conflict by defining it to 0. The MS_USERS, MS_OWNER, and MS_GROUP flags also conflict with reserved flags in the kernel. While this is not known to have caused any problems, it is nevertheless incorrect. For the purposes of the mount.zfs helper, the "users", "owner", and "group" options just serve as hints to set additional implied options. Therefore we now define their associated mount flags in terms of the options that they imply rather than giving them unique values. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1457
* Illumos #3306, #3321George Wilson2013-05-032-35/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3306 zdb should be able to issue reads in parallel 3321 'zpool reopen' command should be documented in the man page and help Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Matt Ahrens <[email protected]> Reviewed by: Christopher Siden <[email protected]> Approved by: Garrett D'Amore <[email protected]> References: illumos/illumos-gate@31d7e8fa33fae995f558673adb22641b5aa8b6e1 https://www.illumos.org/issues/3306 https://www.illumos.org/issues/3321 The vdev_file.c implementation in this patch diverges significantly from the upstream version. For consistenty with the vdev_disk.c code the upstream version leverages the Illumos bio interfaces. This makes sense for Illumos but not for ZoL for two reasons. 1) The vdev_disk.c code in ZoL has been rewritten to use the Linux block device interfaces which differ significantly from those in Illumos. Therefore, updating the vdev_file.c to use the Illumos interfaces doesn't get you consistency with vdev_disk.c. 2) Using the upstream patch as is would requiring implementing compatibility code for those Solaris block device interfaces in user and kernel space. That additional complexity could lead to confusion and doesn't buy us anything. For these reasons I've opted to simply move the existing vn_rdwr() as is in to the taskq function. This has the advantage of being low risk and easy to understand. Moving the vn_rdwr() function in to its own taskq thread also neatly avoids the possibility of a stack overflow. Finally, because of the additional work which is being handled by the free taskq the number of threads has been increased. The thread count under Illumos defaults to 100 but was decreased to 2 in commit 08d08e due to contention. We increase it to 8 until the contention can be address by porting Illumos #3581. Ported-by: Brian Behlendorf <[email protected]> Closes #1354
* Fix zinject list handlersBrian Behlendorf2013-05-011-10/+10
| | | | | | | | The zfs_fd must be opened before calling print_all_handlers() or the ioctl() cannot be used to the zfs control device. This brings the zinject code back in sync with the Illumos implementation. Signed-off-by: Brian Behlendorf <[email protected]>
* 3246 ZFS I/O deadman threadGeorge.Wilson2013-05-012-11/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reviewed by: Matt Ahrens <[email protected]> Reviewed by: Eric Schrock <[email protected]> Reviewed by: Christopher Siden <[email protected]> Approved by: Garrett D'Amore <[email protected]> NOTES: This patch has been reworked from the original in the following ways to accomidate Linux ZFS implementation *) Usage of the cyclic interface was replaced by the delayed taskq interface. This avoids the need to implement new compatibility code and allows us to rely on the existing taskq implementation. *) An extern for zfs_txg_synctime_ms was added to sys/dsl_pool.h because declaring externs in source files as was done in the original patch is just plain wrong. *) Instead of panicing the system when the deadman triggers a zevent describing the blocked vdev and the first pending I/O is posted. If the panic behavior is desired Linux provides other generic methods to panic the system when threads are observed to hang. *) For reference, to delay zios by 30 seconds for testing you can use zinject as follows: 'zinject -d <vdev> -D30 <pool>' References: illumos/illumos-gate@283b84606b6fc326692c03273de1774e8c122f9a https://www.illumos.org/issues/3246 Ported-by: Brian Behlendorf <[email protected]> Closes #1396
* Trivial spelling fixChris Dunlop2013-04-191-1/+1
| | | | | Signed-off-by: Brian Behlendorf <[email protected]> Closes #1411
* Refresh links to web siteNed Bass2013-03-063-3/+3
| | | | | | | | A few files still refer to @behlendorf's private fork on github. Use the primary web site URL instead. Two typos are also corrected. Signed-off-by: Brian Behlendorf <[email protected]>
* Constify structures containing function pointersRichard Yao2013-03-041-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PaX team modified the kernel's modpost to report writeable function pointers as section mismatches because they are potential exploit targets. We could ignore the warnings, but their presence can obscure actual issues. Proper const correctness can also catch programming mistakes. Building the kernel modules against a PaX/GrSecurity patched Linux 3.4.2 kernel reports 133 section mismatches prior to this patch. This patch eliminates 130 of them. The quantity of writeable function pointers eliminated by constifying each structure is as follows: vdev_opts_t 52 zil_replay_func_t 24 zio_compress_info_t 24 zio_checksum_info_t 9 space_map_ops_t 7 arc_byteswap_func_t 5 The remaining 3 writeable function pointers cannot be addressed by this patch. 2 of them are in zpl_fs_type. The kernel's sget function requires that this be non-const. The final writeable function pointer is created by SPL_SHRINKER_DECLARE. The kernel's set_shrinker() and remove_shrinker() functions also require that this be non-const. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1300
* Fix hot sparesBrian Behlendorf2013-03-011-79/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The issue with hot spares in ZoL is because it opens all leaf vdevs exclusively (O_EXCL). On Linux, exclusive opens cause subsequent exclusive opens to fail with EBUSY. This could be resolved by not opening any of the devices exclusively, which is what Illumos does, but the additional protection offered by exclusive opens is desirable. It cleanly prevents you from accidentally adding an in-use non-ZFS device to your pool. To fix this we very slightly relaxed the usage of O_EXCL in the following ways. 1) Functions which open the device but only read had the O_EXCL flag removed and were updated to use O_RDONLY. 2) A common holder was added to the vdev disk code. This allow the ZFS code to internally open the device multiple times but non-ZFS callers may not. 3) An exception was added to make_disks() for hot spare when creating partition tables. For hot spare devices which are already opened exclusively we skip creating the partition table because this must already have been done when the disk was originally added as a hot spare. Additional minor changes include fixing check_in_use() to use a partition instead of a slice suffix. And is_spare() was moved above make_disks() to avoid adding a forward reference. Signed-off-by: Brian Behlendorf <[email protected]> Closes #250
* -x shouldn't warn about old on-disk format or unavailable featuresTim Connors2013-02-281-1/+4
| | | | | | | | | `zpool status -x` should only flag errors or where the pool is unavailable. If it imported fine but isn't using the latest features available in the code, that's not an error. Signed-off-by: Brian Behlendorf <[email protected]> Closes #1319
* Honor 80 character limit in 'zpool status'Brian Behlendorf2013-01-311-2/+2
| | | | | | | | | This is a minor nit, but the second line of the 'action' message when you need to upgrade your pool to support feature flags exceeds the standard 80 character limit. Fix it by moving the word 'feature' on to the third line. Signed-off-by: Brian Behlendorf <[email protected]>
* Retire zpool_id infrastructureBrian Behlendorf2013-01-295-370/+1
| | | | | | | | | | | | | | | | | | | In the interest of maintaining only one udev helper to give vdevs user friendly names, the zpool_id and zpool_layout infrastructure is being retired. They are superseded by vdev_id which incorporates all the previous functionality. Documentation for the new vdev_id(8) helper and its configuration file, vdev_id.conf(5), can be found in their respective man pages. Several useful example files are installed under /etc/zfs/. /etc/zfs/vdev_id.conf.alias.example /etc/zfs/vdev_id.conf.multipath.example /etc/zfs/vdev_id.conf.sas_direct.example /etc/zfs/vdev_id.conf.sas_switch.example Signed-off-by: Brian Behlendorf <[email protected]> Closes #981
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