Back many years ago, the owner field was used to email the test
owner when auto-qa failed that test. It is not needed anymore - if
you want to know who wrote the test, look it up in git....
Script used was:
$ sed -i -e "/^# creator/d" -e "/^owner/d" [0-3][0-9][0-9]
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Phil White <pwhite@sgi.com>
[rjohnston@sgi.com added TOT changes]
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
There are many situations where disk may fail for example
1) brutal usb dongle unplug
2) iscsi (or any other netbdev) failure due to network issues
In this situation filesystem which use this blockdevice is
expected to fail(force RO remount, abort, etc) but whole system
should still be operational. In other words:
1) Kernel should not panic
2) Memory should not leak
3) Data integrity operations (sync,fsync,fdatasync, directio) should fail
for affected filesystem
4) It should be possible to umount broken filesystem
Later when disk becomes available again we expect(only for journaled filesystems):
5) It will be possible to mount filesystem w/o explicit fsck (in order to catch
issues like https://patchwork.kernel.org/patch/1983981/)
6) Filesystem should be operational
7) After mount/umount has being done all errors should be fixed so fsck should
not spot any issues.
This test use fault injection (CONFIG_FAULT_INJECTION=y,
CONFIG_FAIL_MAKE_REQUEST=y and CONFIG_FAULT_INJECTION_DEBUG_FS=y config
options) to force all new IO requests to fail for a given device. Xfs
already has XFS_IOC_GOINGDOWN ioctl which provides similar behavior, but it
is fs specific and it does it in an easy way because it performs freeze_bdev()
before actual shutdown.
Test run fsstress in background and then force disk failure.
Once disk failed it check that (1)-(4) is true.
Then makes disk available again and check that (5)-(7) is also true
BE CAREFUL!! test known to cause memory corruption for XFS
see: https://gist.github.com/dmonakhov/4953045
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>
Dave Chinner
Dmitry Monakhov