Hi, On 06/26/2017 05:14 PM, Johannes Thumshirn wrote:
On Mon, Jun 26, 2017 at 05:08:48PM +0800, Eric Ren wrote:When the primary mirror device fails, activating a mirrored LV will crash the kernel. It can be reproduced 100% with the scripts below: """ dd if=/dev/zero of=file.raw bs=1G count=1 loopdev=$(losetup -f) losetup $loopdev file.raw dmsetup create pv1 --table "0 102399 linear $loopdev 0" dmsetup create pv2 --table "0 102399 linear $loopdev 102400" vgcreate vgtest /dev/mapper/pv1 /dev/mapper/pv2 lvcreate -l1 --type mirror -m1 -n mirror12 --mirrorlog core \ vgtest /dev/mapper/pv1 /dev/mapper/pv2 vgchange -an vgtest echo 0 10000000 error | dmsetup load /dev/mapper/pv1 dmsetup resume /dev/mapper/pv1 vgchange -ay vgtest """So as you have a reproducer, can you eventually write an blktest [1] regression test for it?
No problem, will do later on. Thanks, Eric
Thanks, Johannes [1] https://github.com/osandov/blktests
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