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? Thanks, Johannes [1] https://github.com/osandov/blktests -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
