Fix Ceph OSD not starting after reboot with loop device - #244
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The ceph-osd-losetup service sets up the loop device backing the Ceph OSD, but after a reboot two things can go wrong: 1. LVM scans run before the loop device is ready, so the vg_ceph logical volumes (data, db) are never activated. The OSD fails with: 'failed to open /dev/vg_ceph/data: No such file or directory' 2. Ceph services can start before the losetup service completes, racing against the loop device setup. Fix both by adding: - ExecStartPost=vgchange -ay vg_ceph to activate the LVs after the loop device is attached - Before=ceph.target to ensure correct ordering with all Ceph daemons
chenwng
approved these changes
Aug 27, 2026
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The ceph-osd-losetup service sets up the loop device backing the Ceph OSD, but after a reboot two things can go wrong:
LVM scans run before the loop device is ready, so the vg_ceph logical volumes (data, db) are never activated. The OSD fails with: 'failed to open /dev/vg_ceph/data: No such file or directory'
Ceph services can start before the losetup service completes, racing against the loop device setup.
Fix both by adding: