freebsd-dev/cddl
Martin Matuska e70664bafc MFV v242732:
Merge the ZFS I/O deadman thread from vendor (illumos).
This feature panics the system on hanging ZFS I/O, helps debugging
and resumes failed service.

The panic behavior can be controlled with the loader-only tunables:
vfs.zfs.deadman_enabled (enable or disable panic on stalled ZFS I/O)
vfs.zfs.deadman_synctime (expiration time for stalled ZFS I/O)

By default, ZFS I/O deadman is enabled by default on amd64 and i386
excluding virtual guest machines.

Illumos ZFS issues:
  3246 ZFS I/O deadman thread

References:
  https://www.illumos.org/issues/3246

MFC after:	2 weeks
2013-02-25 12:33:31 +00:00
..
compat/opensolaris Fix an obvious typo. 2012-07-04 17:36:26 +00:00
contrib MFV v242732: 2013-02-25 12:33:31 +00:00
lib Add a new LIBRARIES_ONLY make variable to disable the build and install 2013-01-17 17:27:10 +00:00
sbin Move zpool-features manual page from section 5 to section 7 2012-11-14 01:16:29 +00:00
usr.bin Merge recent zfs vendor changes, sync code and adjust userland DEBUG. 2012-09-12 18:05:43 +00:00
usr.sbin Implement DTrace for PowerPC. This includes both 32-bit and 64-bit. 2012-11-07 23:45:09 +00:00
Makefile
Makefile.inc