http://bugzilla.suse.com/show_bug.cgi?id=1042551 Bug ID: 1042551 Summary: os-prober + KVM on host kills btrfs in clients Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.2 Hardware: Other OS: Other Status: NEW Severity: Critical Priority: P5 - None Component: Basesystem Assignee: bnc-team-screening@forge.provo.novell.com Reporter: wagner-thomas@gmx.at QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Hi! I have Leap 42.2 as KVM host with clients also running Leap 42.2 On the host I use LVM and prepare logical partition (create partitions, format them and populate them with data). Then I assign these logical partitions the clients as block devices (on the host the partition is not mounted any more after assignment). Using ext4, this setup works well. Using btrfs it works until os-prober is launched (IMHO due to kernel or grub update) on the host. os-prober tries to mount all btrfs partitions regardless if they are already mount in a client. This destroys the btrfs filesystem. Jun 03 16:55:31 x11sae-f os-prober[25914]: debug: btrfs volume uuid=02bd7410-fa4e-4164-84a5-6a7c500d0a52 partition=/dev/mapper/system-apache_wwwdata Jun 03 16:55:31 x11sae-f os-prober[25915]: debug: running /usr/lib/os-probes/50mounted-tests on btrfs /dev/mapper/system-apache_wwwdata Jun 03 16:55:31 x11sae-f 50mounted-tests[25919]: debug: begin btrfs processing for 02bd7410-fa4e-4164-84a5-6a7c500d0a52 Jun 03 16:55:31 x11sae-f kernel: BTRFS info (device dm-13): disk space caching is enabled Jun 03 16:55:31 x11sae-f kernel: BTRFS error (device dm-13): parent transid verify failed on 205856768 wanted 4412 found 4418 Jun 03 16:55:31 x11sae-f kernel: BTRFS error (device dm-13): parent transid verify failed on 205856768 wanted 4412 found 4418 Jun 03 16:55:31 x11sae-f kernel: BTRFS: open_ctree failed Jun 03 16:55:31 x11sae-f 50mounted-tests[25942]: warning: cannot mount btrfs volume 02bd7410-fa4e-4164-84a5-6a7c500d0a52, exiting S.M.A.R.T. shows no problems. best regards Thomas -- You are receiving this mail because: You are on the CC list for the bug.