mirror_zfs/cmd
Brian Behlendorf 066da71e7f
Improve zpool labelclear
1) As implemented the `zpool labelclear` command overwrites
the calculated offsets of all four vdev labels even when only a
single valid label is found.  If the device as been re-purposed
but still contains a valid label this can result in space no
longer owned by ZFS being zeroed.  Prevent this by verifying
every label removed is intact before it's overwritten.

2) Address a small bug in zpool_do_labelclear() which prevented
labelclear from working on file vdevs.  Only block devices support
BLKFLSBUF, try the ioctl() but when it's reported as unsupported
this should not be fatal.

3) Fix `zpool labelclear` so it can be run on vdevs which were
removed from the pool with `zpool remove`.  Additionally, allow
intact but partial labels to be cleared as in the case of a failed
`zpool attach` or `zpool replace`.

4) Remove LABELCLEAR and LABELREAD variables for test cases.

Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #8500 
Closes #8373 
Closes #6261
2019-03-21 10:13:01 -07:00
..
arc_summary Fix typo in arc_summary3 2019-03-13 10:43:55 -07:00
arcstat pyzfs: python3 support (build system) 2019-01-06 10:39:41 -08:00
dbufstat pyzfs: python3 support (build system) 2019-01-06 10:39:41 -08:00
fsck_zfs Add /sbin/fsck.zfs helper 2013-01-09 16:54:58 -08:00
mount_zfs Add libzutil for libzfs or libzpool consumers 2018-11-05 11:22:33 -08:00
raidz_test Support -fsanitize=address with --enable-asan 2018-01-10 10:49:27 -08:00
vdev_id Add enclosure_symlinks option to vdev_id 2018-12-14 17:27:49 -08:00
zdb zdb: replace label_t to zdb_label_t for reduce collisions 2019-02-13 11:28:36 -08:00
zed Update commented zed.rc values to defaults 2019-03-14 09:53:34 -07:00
zfs Avoid retrieving unused snapshot props 2019-03-12 13:13:22 -07:00
zgenhostid Add zgenhostid utility script 2017-07-25 13:22:03 -04:00
zhack Add libzutil for libzfs or libzpool consumers 2018-11-05 11:22:33 -08:00
zinject Multiple DVA Scrubbing Fix 2019-03-15 14:14:31 -07:00
zpool Improve zpool labelclear 2019-03-21 10:13:01 -07:00
zstreamdump Make zstreamdump -v more greppable 2019-03-13 11:19:23 -07:00
ztest Do not resume a pool if multihost is enabled 2019-02-28 17:56:19 -08:00
zvol_id Fedora 28: Fix misc bounds check compiler warnings 2018-04-04 10:16:47 -07:00
Makefile.am Retire legacy test infrastructure 2017-08-15 17:26:38 -07:00