Dne 14. 06. 26 v 19:57 Dr. David Alan Gilbert napsal(a):
Hi,
I've got a repeatable raid hang/warn and would appreciate some pointers
as where to debug.
(I've been logging stuff on
https://bugzilla.kernel.org/show_bug.cgi?id=221535 )
This started off as debugging a case where I'd get my RAID1 (on the host)
getting a reliable 'rescheduling sector'/disk failure while running the qemu
block test suite
during a qemu build, but then I tried to build a smaller discrete
test, and now I've got a simply triggerable warn and test hang.
There's no errors from the underlying SATA layer on the storage,
everything resyncs just fine.
I've got an existing LVM vg ('main') with two mirrors on sda2, and sdb2
which are SATA disks.
# lvcreate --type mirror --mirrors 1 -L 1G main /dev/sda2 /dev/sdb2
Hi
It's probably worth to say here - the '--type mirror' is the OLD (historical)
DM mirror target implementation - this target is now in the not so active
development as users are supposed to be using newer (and faster) md wrapped
'--type raid1'
So if you use 'lvcreate -m1 ....' you get 'auto-magically' this mirroring
target.
But this obviously doesn't fix the problem if old mirror target...
Regards
Zdenek
