Recover ceph storage pool after pveceph purge?

O

obsolete

New Member
Mar 23, 2021
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Is it possible to recover a ceph storage pool after executing pveceph purge?

I can see various artifacts of my storage pool... I'm just unsure of how to re-map it back in to my ceph configuration.
 
For what it's worth, I know the OSD is still there... I just don't know how to get it back online.

Bash: 
fdisk -l

Disk /dev/nvme0n1: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Disk model: CT500P5SSD8                             
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

...

Disk /dev/mapper/ceph--05a4b3dd--0c87--49a0--aa75--d567bbe69f96-osd--block--13bcca31--06ca--47bd--b7fc--093cf0432bf6: 465.8 GiB, 500103643136 bytes, 976764928 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Or
Bash: 
ceph-volume lvm activate 0 13bcca31-06ca-47bd-b7fc-093cf0432bf6
Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0
Running command: /usr/bin/ceph-bluestore-tool --cluster=ceph prime-osd-dir --dev /dev/ceph-05a4b3dd-0c87-49a0-aa75-d567bbe69f96/osd-block-13bcca31-06ca-47bd-b7fc-093cf0432bf6 --path /var/lib/ceph/osd/ceph-0 --no-mon-config
Running command: /usr/bin/ln -snf /dev/ceph-05a4b3dd-0c87-49a0-aa75-d567bbe69f96/osd-block-13bcca31-06ca-47bd-b7fc-093cf0432bf6 /var/lib/ceph/osd/ceph-0/block
Running command: /usr/bin/chown -h ceph:ceph /var/lib/ceph/osd/ceph-0/block
Running command: /usr/bin/chown -R ceph:ceph /dev/dm-6
Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0
Running command: /usr/bin/systemctl enable ceph-volume@lvm-0-13bcca31-06ca-47bd-b7fc-093cf0432bf6
Running command: /usr/bin/systemctl enable --runtime ceph-osd@0
Running command: /usr/bin/systemctl start ceph-osd@0
--> ceph-volume lvm activate successful for osd ID: 0

Or
Bash: 
ceph-volume simple scan /var/lib/ceph/osd/ceph-0/
 stderr: lsblk: /var/lib/ceph/osd/ceph-0: not a block device
 stderr: lsblk: /var/lib/ceph/osd/ceph-0: not a block device
 stderr: Bad argument "/var/lib/ceph/osd/ceph-0", expected an absolute path in /dev/ or /sys or a unit name: Invalid argument
Running command: /usr/sbin/cryptsetup status tmpfs
 stderr: blkid: error: tmpfs: No such file or directory
 stderr: lsblk: tmpfs: not a block device
--> Ignoring /var/lib/ceph/osd/ceph-0 because it's not a ceph-disk created osd.


ceph-volume simple scan /dev/nvme0n1
usage: ceph-volume simple scan [-h] [-f] [--stdout] [OSD_PATH]
ceph-volume simple scan: error: Argument is not a directory or device which is required to scan
 
do you still have the monitors?

obsolete said:
Bash: 
--> ceph-volume lvm activate successful for osd ID: 0
Click to expand...
shows it was successfully activated

what does 'ceph status' and 'ceph osd df' say?
 
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