Re: Remove separate WAL device from OSD

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Hi Igor,

Am 23.09.2020 um 18:38 schrieb Igor Fedotov:
bin/ceph-bluestore-tool --path dev/osd0 --devs-source dev/osd0/block.wal --dev-target dev/osd0/block.db --command bluefs-bdev-migrate

Would this also work if the OSD only has its primary block device and the separate WAL device? Like running:

ceph-bluestore-tool --path dev/osd0 --devs-source dev/osd0/block.wal \
 --dev-target dev/osd0/block --command bluefs-bdev-migrate

Additionally you might probably need to zap wal device with ceph-volume after the migration to avoid its attachment to OSD on node restart. Not completely sure about that though...

Since the WAL device is just a LV I'd remove the LV once the OSD is back up and in.

Thanks,
Michael
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