http://bugzilla.suse.com/show_bug.cgi?id=1114113 http://bugzilla.suse.com/show_bug.cgi?id=1114113#c1 --- Comment #1 from Gang He --- The reproducible LV corruption I was seeing was from the following: setup and start sanlock and lvmlockd vgcreate --shared --metadatasize 1m foo /dev/sdg (Note that this creates an internal "lvmlock" LV that sanlock uses to store leases.) lvcreate 500 inactive LVs in foo vgremove foo During the vgremove step, sanlock notices that its updates to the internal "lvmlock" LV are periodically lost. It's because when vgremove writes metadata at the end of the metadata area, it also clobbers PEs that were allocated to the lvmlock LV. (sanlock reads/writes blocks to the lvmlock LV and notices if data changes out from under it.) It should be straight forward to reproduce this same issue without lvmlockd and sanlock. Create an ordinary VG, create an initial small LV (that uses the first PEs in the VG), start a script or program that reads/writes data to that LV and verifies that what it wrote comes back again. Then start creating 500 other LVs in the VG, and removing those 500 LVs. This causes the LV metadata to grow large and wrap around the end of the metadata area. When lvm writes to the end of the metadata area, it will clobber data that the test program wrote and the test program should eventually notice that its last write is missing. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1114113 http://bugzilla.suse.com/show_bug.cgi?id=1114113#c3 --- Comment #3 from Gang He --- The final fix is available here, https://sourceware.org/git/?p=lvm2.git;a=commit;h=ab27d5dc2a5c3bf23ab8fed438... I will backport it to SLE12SP4 and Tumbleweed -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1114113 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Whiteboard| maint:planned:update |ibs:running:9691:moderate -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1114113 http://bugzilla.suse.com/show_bug.cgi?id=1114113#c11 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- OS|Other |All --- Comment #11 from Swamp Workflow Management --- SUSE-RU-2018:4226-1: An update that has two recommended fixes can now be installed. Category: recommended (moderate) Bug References: 1110872,1114113 CVE References: Sources used: SUSE Linux Enterprise Software Development Kit 12-SP4 (src): lvm2-2.02.180-9.4.2 SUSE Linux Enterprise Server 12-SP4 (src): lvm2-2.02.180-9.4.2 SUSE Linux Enterprise High Availability 12-SP4 (src): lvm2-2.02.180-9.4.2 SUSE Linux Enterprise Desktop 12-SP4 (src): lvm2-2.02.180-9.4.2 -- You are receiving this mail because: You are on the CC list for the bug.