freebsd-nq/module
Tim Chase d439f63ff5 Allow recovery from corrupted snapshot maps
If the ZAP object containing a snapshot map is corrupted due to an
unrecoverable checksum error or otherwise, dsl_dataset_name() will
normally panic the system due to its VERIFY.

This patch attempts to allow a recovery avenue from such situations by
manufacturing a descriptive snapshot name and then ignoring the error.
Scrubbing a pool with this type of corruption will then show the affected
object in the error list rather than panicking.

The recovery code is only enabled when the zfs_recover module parameter
is set.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3705
2015-08-28 11:56:32 -07:00
..
avl Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
nvpair Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
unicode Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
zcommon Linux 4.1 compat: loop device on ZFS 2015-08-24 10:17:06 -07:00
zfs Allow recovery from corrupted snapshot maps 2015-08-28 11:56:32 -07:00
zpios Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
.gitignore gitignore: anchor entries at their respective directory 2013-04-02 10:50:17 -07:00
Makefile.in Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00