** Changed in: ceph (Ubuntu Bionic)
Status: New => In Progress
** Changed in: ceph (Ubuntu Disco)
Status: New => In Progress
** Changed in: ceph (Ubuntu Disco)
Assignee: (unassigned) => James Page (james-page)
** Changed in: ceph (Ubuntu Bionic)
Assignee: (unassigned) => James Page (james-page)
** Changed in: ceph (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: ceph (Ubuntu Disco)
Importance: Undecided => High
** Description changed:
+ [Impact]
+ For deployments where the bluestore DB and WAL devices are on separate
underlying OSD's, its possible on reboot that the LV's configured on these
devices have not yet been scanned and detected; the OSD boot process ignores
this fact and tries to boot the OSD anyway as soon as the primary LV supporting
the OSD is detected, resulting in the OSD crashing as required block device
symlinks are not present.
+
+ [Test Case]
+ Deploy ceph with bluestore + separate DB and WAL devices.
+ Reboot servers
+ OSD devices will fail to start after reboot (its a race so not always).
+
+ [Regression Potential]
+ Low - the fix has been landed upstream and simple ensures that if a separate
LV is expected for the DB and WAL devices for an OSD, the OSD will not try to
boot until they are present.
+
+ [Original Bug Report]
Ubuntu 18.04.2 Ceph deployment.
Ceph OSD devices utilizing LVM volumes pointing to udev-based physical
devices.
LVM module is supposed to create PVs from devices using the links in
/dev/disk/by-dname/ folder that are created by udev.
However on reboot it happens (not always, rather like race condition) that
Ceph services cannot start, and pvdisplay doesn't show any volumes created. The
folder /dev/disk/by-dname/ however has all necessary device created by the end
of boot process.
The behaviour can be fixed manually by running "#/sbin/lvm pvscan
--cache --activate ay /dev/nvme0n1" command for re-activating the LVM
components and then the services can be started.
** Also affects: cloud-archive
Importance: Undecided
Status: New
** Also affects: cloud-archive/stein
Importance: Undecided
Status: New
** Also affects: cloud-archive/queens
Importance: Undecided
Status: New
** Also affects: cloud-archive/pike
Importance: Undecided
Status: New
** Also affects: cloud-archive/train
Importance: Undecided
Status: New
** Also affects: cloud-archive/rocky
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1828617
Title:
Hosts randomly 'losing' disks, breaking ceph-osd service enumeration
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