History log of /illumos-gate/usr/src/lib/libzfs/common/libzfs_import.c
Revision Date Author Comments
e0f1c0afa46cc84d4b1e40124032a9a87310386e 28-Mar-2019 Olaf Faaland <faaland1@llnl.gov> 10499 Multi-modifier protection (MMP)
Portions contributed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Portions contributed by: Tim Chase <tim@chase2k.com>
Portions contributed by: sanjeevbagewadi <sanjeev.bagewadi@gmail.com>
Portions contributed by: John L. Hammond <john.hammond@intel.com>
Portions contributed by: Giuseppe Di Natale <dinatale2@llnl.gov>
Portions contributed by: Prakash Surya <surya1@llnl.gov>
Reviewed by: George Melikov <mail@gmelikov.ru>
Reviewed by: Tom Caputi <tcaputi@datto.com>
Reviewed by: Kash Pande <kash@tripleback.net>
Reviewed by: loli10K <ezomori.nozomu@gmail.com>
Reviewed by: George Melikov <mail@gmelikov.ru>
Reviewed by: Tony Hutter <hutter2@llnl.gov>
Reviewed by: Gu Zheng <guzheng2331314@163.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Ned Bass <bass6@llnl.gov>
Reviewed by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Kody Kantor <kody.kantor@joyent.com>
Approved by: Dan McDonald <danmcd@joyent.com>
ddfe901b12348d31c500fb57f9174e88860a4061 07-Sep-2017 sara hartse <sara.hartse@delphix.com> 9457 libzfs_import.c:add_config() has a memory leak
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
ae5ee1bd5e54409b4589217b160c8cf4b81e2fb8 05-Mar-2018 Alan Somers <asomers@gmail.com> 9237 "zpool add" fails for very large pools
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Approved by: Matt Ahrens <mahrens@delphix.com>
5dafeea3ebd2dd77affc802bcb90f63faf01589f 10-Feb-2017 Pavel Zakharov <pavel.zakharov@delphix.com> 9235 rename zpool_rewind_policy_t to zpool_load_policy_t
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
6f7938128a2c5e23f4b970ea101137eadd1470a1 22-Jul-2016 Pavel Zakharov <pavel.zakharov@delphix.com> 9075 Improve ZFS pool import/load process and corrupted pool recovery
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andrew Stormont <andyjstormont@gmail.com>
Approved by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
c861bfbd77c4ae780a0341e9cb6926d8b74341cf 07-Aug-2017 Alan Somers <asomers@gmail.com> 8567 Inconsistent return value in zpool_read_label
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
46d46cd4fa12218e54fa3d73a9be825ed504cabb 26-Jan-2017 Yuri Pankov <yuri.pankov@nexenta.com> 7803 want devid_str_from_path(3devid)
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Jason King <jason.brian.king@gmail.com>
Reviewed by: Marcel Telka <marcel@telka.sk>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
8b65a70b763232c90a91f31eb2010314c02ed338 12-Dec-2016 Pavel Zakharov <pavel.zakharov@delphix.com> 7541 zpool import/tryimport ioctl returns ENOMEM because provided buffer is too small for config
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
105686550ee9cbf5d033166a8a2a5a763667d436 13-Jan-2017 Yuri Pankov <yuri.pankov@nexenta.com> 7730 libzfs`add_config() leaks config nvl when reading spare/l2cache devices
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
f83b46baf98d276f5f84fa84c8b461f412ac1f5e 19-Apr-2016 Paul Dagnelie <pcd@delphix.com> 6872 zfs libraries should not allow uninitialized variables
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>
6401734d545a04c18f68b448202f9d9a77216bb9 09-Apr-2016 Will Andrews <will@firepipe.net> 6418 zpool should have a label clearing command
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
aab83bb83be7342f6cfccaed8d5fe0b2f404855d 24-Feb-2016 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> 6659 nvlist_free(NULL) is a no-op
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Marcel Telka <marcel@telka.sk>
Approved by: Robert Mustacchi <rm@joyent.com>
bd0f709169e67f4bd34526e186a7c34f595f0d9b 29-May-2015 Andrew Stormont <andyjstormont@gmail.com> 1778 Assertion failed: rn->rn_nozpool == B_FALSE, file ../common/libzfs_import.c, line 1077, function zpool_open_func
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george@delphix.com>
Reviewed by: Richard Elling <richard.elling@richardelling.com>
Approved by: Gordon Ross <gordon.ross@nexenta.com>
078266a5aafa880521ea55488ef3d676f35e908e 12-Jan-2015 Marcel Telka <marcel.telka@nexenta.com> 5518 Memory leaks in libzfs import implementation
Reviewed by: Dan Fields <dan.fields@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serghei Samsi <sscdvp@gmail.com>
Approved by: Dan McDonald <danmcd@omniti.com>
b18d6b0e20b5bf6e2007c550bb33dcbab6b5dddc 10-Sep-2014 Matthew Ahrens <mahrens@delphix.com> 5135 zpool_find_import_cached() can use fnvlist_*
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Richard Elling <richard.elling@gmail.com>
Approved by: Dan McDonald <danmcd@omniti.com>
fb13f48f1d9593453b94cd1c7277553b56f493c8 26-Feb-2014 Josef 'Jeff' Sipek <josef.sipek@nexenta.com> 4626 libzfs memleak in zpool_in_use()
Reviewed by: Tony Nguyen <tony.nguyen@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
bda8819455defbccd06981d9a13b240b682a3d50 30-Jan-2013 George Wilson <george.wilson@delphix.com> 3422 zpool create/syseventd race yield non-importable pool
3425 first write to a new zvol can fail with EFBIG
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
dfbb943217bf8ab22a1a9d2e9dca01d4da95ee0b 22-Aug-2012 George Wilson <george.wilson@delphix.com> 3090 vdev_reopen() during reguid causes vdev to be treated as corrupt
3102 vdev_uberblock_load() and vdev_validate() may read the wrong label
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Christopher Siden <chris.siden@delphix.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Approved by: Eric Schrock <Eric.Schrock@delphix.com>
8704186e373c9ed74daa395ff3f7fd745396df9e 15-Nov-2011 Dan McDonald <danmcd@nexenta.com> 1693 persistent 'comment' field for a zpool
Reviewed by: George Wilson <gwilson@zfsmail.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
f9af39bacaaa0f9dda3b75ff6858b9f3988a39af 09-Aug-2010 George Wilson <George.Wilson@Sun.COM> PSARC 2010/306 Read-only ZFS pools
6720531 ZFS should provide read-only import
d41c437653d9e16d837cc66844073e1885276cee 14-Jan-2010 Mark J Musante <Mark.Musante@Sun.COM> 6698011 zfs incorrectly reports file systems as children when attempting a rename
6730529 trying to import a pool that is already imported should have a better error message
6468151 inconsistent behaviour with volsize property
6914241 In ztest_vdev_attach_detach() the code is choosing a random leaf incorrectly
6915030 A race condition in ztest can end up causing spa_vdev_split_mirror() to offline a replacing vdev
16d2251e8bfa8576e38e3c44e646c89b396b3ee2 20-Nov-2009 Eric Taylor <Eric.Taylor@Sun.COM> 6902693 Can't install Nevada 128 x86 from DVD
4f67d755171a044e0b4b52782b9e87c67ac48b03 06-Nov-2009 Eric Taylor <Eric.Taylor@Sun.COM> 6815179 zpool import with a large number of LUNs is too slow
6844191 zpool import, scanning of disks should be multi-threaded
096d22d43da2758693a6df66ce7d9ab54c9d464c 21-Oct-2009 Eric Schrock <Eric.Schrock@Sun.COM> 6893087 removing and inserting a faulted vdev clears faulted state
6893088 new ereports need to be generated when clearing a vdev
6893090 clearing a vdev should automatically detach spare
6893099 zpool_clear_label() would be useful
88ecc943b4eb72f7c4fbbd8435997b85ef171fc3 21-Sep-2009 George Wilson <George.Wilson@Sun.COM> 6574286 removing a slog doesn't work
6856566 zpool import -F can cause panic
6863456 system panic by load_nvlist(spa, spa->spa_config_object, &nv) == 0 while running zfs test suite
6882947 dump_nvlist() should live in libnvpair
913f2d80f883f1c81cd35aa675de9c1df0447724 07-Jul-2008 ck153898 <none@none> 6719384 nvlist_lookup_uint64(config, "pool_guid", &this_guid) == 0, file ../common/libzfs_import.c,
e829d913cde9eeff0efd355502799863d4f74f69 25-Jun-2008 ck153898 <none@none> 6689844 ztest fails with "zdb: can't open ztest: No such device or address"
7b0e68ead3ced51be3f002a30f5ec9e13fefd78a 17-Jun-2008 ck153898 <none@none> 6712841 nvlist_lookup_string(config, "name", &pname) == 0, file ../com mon/libzfs_import.c, line 893, functi
24e697d414a4df0377b91a2875f029e7b5f97247 06-Jun-2008 ck153898 <none@none> 6689452 zfs often fails to import a zpool if several zfs import commands are running at the same time.
c5904d138f3bdf0762dbf452a43d5a5c387ea6a8 14-May-2008 eschrock <none@none> 6625086 changing cachefile doesn't remove old cache on last user
6633599 need a mechanism to import faulted pools
6646102 hot spares are not activated when opening a pool
6646106 ZFS DE is overly complicated
6646195 ZFS DE leaks pool handles
6646618 want dataset GUIDs as a property in libzfs
6662441 L2ARC FMA support
6687745 zdb -U doesn't work with anything but pool names
6687750 ::spa_vdevs should print out cache devices
6687753 cache devices should support offline/online
6687766 ZFS should post a sysevent when config changes
6688366 bad indentation for 'casesensitivity' property in 'zfs get' help
6689223 spa_create() can leave namespace lock held if property validation fails
6690884 setting zfs_no_write_throttle panics system
6691266 zpool_read_label() needs to use pread64()
6694185 nv_priv_init() doesn't bzero structure completely
6694186 ses_plugin_dlclose is backwards
6697754 ses2 plugin crash when setting invalid property
842c5645dc246ff7fd786d8a6f56644d79705e18 08-Apr-2008 jwadams <none@none> 6682366 zpool_find_import() is inefficient.
3a57275a335306e90136ebd00a4689fe0ee72519 11-Feb-2008 ck153898 <none@none> 6580270 'zdb [-C|-L] <pool'> can't open alternate root pools
6657291 zdb -e is not correctly documented
6657293 zdb -U should take a path
c6765aab6b83692cd10f1dcf73ce15203a5befa7 20-Nov-2007 eschrock <none@none> 6625091 zpool cachefile property has incorrect value help message
6629138 recvflags_t use of boolean_t in bitfields breaks D compiler
6631051 topo_node_walk_init() can leak memory on failure
6631059 zpool_in_use() can leak memory on failure
6631063 xmlattr_to_fmri() leaks memory on failure
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bb 10-Nov-2007 brendan <none@none> PSARC 2007/618 ZFS L2ARC
6536054 second tier ("external") ARC
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5 29-Oct-2007 eschrock <none@none> PSARC 2007/607 ZFS cachefile property
6620436 zpool import can dump core with multiple '-o' arguments
6620452 zfs should support placing pool configuration in alternate cachefiles
990b4856d0eaada6f8140335733a1b1771ed2746 19-Sep-2007 lling <none@none> PSARC 2007/342 Enhanced ZFS Pool Properties
PSARC 2007/482 zpool upgrade -V
6565437 zpool property extensions
6561384 want 'zpool upgrade -V <version>' to upgrade to specific version number
6582755 zfs.h has some incorrect version macros
6595601 libzfs headers declare functions which don't exist
6603938 libzfs is using VERIFY() again
6538984 duplicated messages when get pool properties from an unsupported pool version
e7437265dc2a4920c197ed4337665539d358b22c 29-Jun-2007 ahrens <none@none> PSARC/2007/328 zfs upgrade
6552536 'zpool status -v' doesn't work with new (type-bearing) directory entries
6559635 can not import pool whose front labels are gone
6572636 need "zfs upgrade" to change ZPL version number
6572637 store object type in directory entries.
6572648 ZPL's delete queue should not be processed if the filesystem is mounted read-only
6572650 ZFS_VERSION should be SPA_VERSION for readability
ccae0b50330edda9b094cee1ec6a0ad35443e8b0 17-Apr-2007 eschrock <none@none> 6536445 want ::zio to show zio tree
6546214 zpool_find_import() leaks directory handle
95173954d2b811ceb583a9012c3b16e1d0dd6438 05-Apr-2007 ek110237 <none@none> 6282725 hostname/hostid should be stored in the label
46657f8d750bdb71753495ce2919170f126b8e34 01-Mar-2007 mmusante <none@none> 6441384 zpool import action message is not correctly localized
6473418 setting user defined property on full filesystem should report error
6513953 Unable to create global hotspare in ja locale
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48d 08-Jan-2007 eschrock <none@none> 6393525 vdev_reopen() should verify that it's still the same device
6414648 zfs allows overlapping devices to be added
6435943 assertion failed: spare != 0L, file: ../../common/fs/zfs/spa_misc.c
6436000 import of actively spared device returns EBUSY
6478316 nfs/server doesn't respect auto_enable setting
6483675 want a private property to return number of clones
6485728 zpool iostat should flush output periodically
6494072 A device which was set as spare disk is not detach
6497563 zfs double-spared an already-spared disk on reboot
6503724 adding spare that is in use in another pool should be allowed
6505225 zpool(1M) can give misleading error when removing active spare
ece3d9b3bacef51a5f34d993935eedbb7bb87059 13-Dec-2006 lling <none@none> 6480245 renaming a dataset to something with '%s' will cause segfault
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7 05-Sep-2006 eschrock <none@none> PSARC 2006/486 ZFS canmount property
PSARC 2006/497 ZFS create time properties
PSARC 2006/502 ZFS get all datasets
PSARC 2006/504 ZFS user properties
6269805 properties should be set via an nvlist.
6281585 user defined properties
6349494 'zfs list' output annoying for even moderately long dataset names
6366244 'canmount' option for container-like functionality
6367103 create-time properties
6416639 RFE: provide zfs get -a
6437808 ZFS module version should match on-disk version
6454551 'zfs create -b blocksize filesystem' should fail.
6457478 unrecognized character in error message with 'zpool create -R' command
6457865 missing device name in the error message of 'zpool clear' command
6458571 zfs_ioc_set_prop() doesn't validate input
6458614 zfs ACL #defines should use prefix
6458638 get_configs() accesses bogus memory
6458678 zvol functions should be moved out of zfs_ioctl.h
6458683 zfs_cmd_t could use more cleanup
6458691 common routines to manage zfs_cmd_t nvlists
6460398 zpool import cores on zfs_prop_get
6461029 zpool status -x noexisting-pool has incorrect error message.
6461223 index translations should live with property definitions
6461424 zpool_unmount_datasets() has some busted logic
6461427 zfs_realloc() would be useful
6461757 'zpool status' can report the wrong number of persistent errors
6461784 recursive zfs_snapshot() leaks memory
3bb79bece53191f2cf27aa61a72ea1784a7ce700 31-Jul-2006 eschrock <none@none> 6368751 libzfs interface for mount/umounting all the file systems for a given pool
6385349 zpool import -d /dev hangs
6397052 unmounting datasets should process /etc/mnttab instead of traverse DSL
6403510 zfs remount,noatime option broken
6423412 Two spaces lines are unnecessary after 'zpool import -a'
6434054 'zfs destroy' core dumps if clone is namespace-parent of origin
6440515 namespace_reload() can leak memory on allocation faiure
6440592 nvlist_dup() should not fill in destination pointer on error
6446060 zfs get does not consistently report temporary properties
6448326 zfs(1) 'list' command crashes if hidden property createtxg is requested
6450653 get_dependents() has poor error semantics

--HG--
rename : usr/src/cmd/zpool/zpool_dataset.c => deleted_files/usr/src/cmd/zpool/zpool_dataset.c
0192a2782d86db43dfd071aa5d97f13a63c14951 07-Jun-2006 eschrock <none@none> 6435779 6433679 broke zpool import
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51 07-Jun-2006 eschrock <none@none> 6433264 crash when adding spare: nvlist_lookup_string(cnv, "path", &path) == 0
6433406 zfs_open() can leak memory on failure
6433408 namespace_reload() can leak memory on allocation failure
6433679 zpool_refresh_stats() has poor error semantics
6433680 changelist_gather() ignores libuutil errors
99653d4ee642c6528e88224f12409a5f23060994 30-May-2006 eschrock <none@none> PSARC 2006/223 ZFS Hot Spares
PSARC 2006/303 ZFS Clone Promotion
6276916 support for "clone swap"
6288488 du reports misleading size on RAID-Z
6393490 libzfs should be a real library
6397148 fbufs debug code should be removed from buf_hash_insert()
6405966 Hot Spare support in ZFS
6409302 passing a non-root vdev via zpool_create() panics system
6415739 assertion failed: !(zio->io_flags & 0x00040)
6416759 ::dbufs does not find bonus buffers anymore
6417978 double parity RAID-Z a.k.a. RAID6
6424554 full block re-writes need not read data in
6425111 detaching an offline device can result in import confusion
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481 07-Apr-2006 eschrock <none@none> PSARC 2006/206 zpool upgrade
6399930 want 'zpool upgrade' to control change of version number
6400742 'zpool destroy' not clean inuse tag that have to need '-f' to use them again
4c58d71403cebfaa40a572ff12b17668ebd56987 16-Mar-2006 darrenm <none@none> PSARC/2006/082 zpool import destroyed pools
6276934 ability import destroyed pools
Contributed by Robert Milkowski <rmilkowski@task.gda.pl>
ea8dc4b6d2251b437950c0056bc626b311c73c27 04-Mar-2006 eschrock <none@none> PSARC 2006/077 zpool clear
PSARC 2006/139 FMA for ZFS
6284889 arc should replace the znode cache
6333006 DMU & DSL should not panic upon I/O error
6333092 concurrent reads to a file not scaling with number of readers
6338081 ZFS/FMA phase 1
6338386 need persistent error log
6341326 i/o error causes arc buf hash table corruption
6341639 zfs backup/restore should compute/verify checksum of backup stream
6348002 out of space due to changing properties
6354724 inaccurate error message from zfs restore
6354872 dmu_sync() blows predictive accounting
6355416 zpool scrubbing consumes all memory, system hung
6363995 df should only load libzfs when it encounters a ZFS filesystem
6366320 zfs backup/restore doesn't like signals
6368892 mount -m support needed for legacy mounts
6368902 boot archive fstat support needed for ZFS Mountroot
6369424 BFU complains when bfu'ing a ZFS root filesystem
6374062 mountroot support needed for ZFS
6376356 dirtying dbuf obj=43 lvl=0 blkid=0 but not tx_held
6378391 unused members of dmu_objset_stats_t
6378392 clean up zfs_cmd_t structure
6378685 buf_init should allocate its hash table more carefully
6378976 ziltest should be a first class citizen
6381086 zdb segfaults if there is a spa deferred-free bplist
6381203 deadlock due to i/o while assigning (tc_lock held)
6381209 freed space is not immediately available
6381344 'zpool clear'
6381345 FAULTED devices should really be UNAVAIL
6381346 import should mark devices as persistently unavailable
6383272 recursive mutex_enter() during log replay with zfs root
6386326 origin property is not displayed
6386354 libzfs does too much in its _init section, calls exit(1)
6386624 zpool should not complain about non-existent devices from libdiskmgt
6386910 spa needs to be i/o error hardened
6387735 need a mechanism to inject faults into ZFS
6387736 internal ZFS utilities should be placed in an ON-private package
6389928 libzfs should ship a lint library
6390609 malformed vdev config panics on zpool_create()
6390677 version number checking makes upgrades challenging
6390713 ztest hangs in zil_suspend()
6391873 metadata compression should be turned back on
6392113 ztest sometimes reports leaked blocks because ZIL isn't resilvered
6393004 minor memory leak in unique_insert()
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07 31-Jan-2006 eschrock <none@none> 6362672 import gets confused about overlapping slices
6364582 need to fixup paths if they've changed
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8 31-Jan-2006 eschrock <none@none> 6343802 zpool(1M) should make better use of libdiskmgt
6354197 setting env variable NOINUSE_CHECK causes zpool to core dump
6364275 internal error: disk configuration error 19 at line 518 of file zpool_vdev.c
088e9d477eee66081e407fbc5a33c4da25f66f6a 19-Nov-2005 eschrock <none@none> 6344502 placeholder bug for the remaining Makefile cleanup work for ZFS
6343938 ::spa -v tried to read NULL vdev
6345206 zpool iostat doesn't always line up
fa9e4066f08beec538e775443c5be79dd423fcab 31-Oct-2005 ahrens <none@none> PSARC 2002/240 ZFS
6338653 Integrate ZFS
PSARC 2004/652 - DKIOCFLUSH
5096886 Write caching disks need mechanism to flush cache to physical media