Public bug reported:
I created an OSD with the following command:
sudo ceph-volume lvm create --bluestore \
--data /dev/disk/by-id/<HDD_ID> \
--block.db /dev/disk/by-id/<NVME_PART_ID>
Creation succeded:
<SNIP>
Running command: /usr/bin/systemctl start ceph-osd@0
--> ceph-volume lvm activate successful for osd ID: 0
--> ceph-volume lvm create successful for: /dev/sdc
However:
sudo ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0 root default
0 0 osd.0 down 1.00000 1.00000
And it seems that the osd daemon core dumped:
sudo systemctl status ceph-osd@0 --no-pager -l
× [email protected] - Ceph object storage daemon osd.0
Loaded: loaded (/usr/lib/systemd/system/[email protected];
enabled-runtime; preset: enabled)
Active: failed (Result: core-dump) since Tue 2026-06-23 20:15:41 UTC; 1min
39s ago
Duration: 716ms
Invocation: 8a27132077044269a04bab9b48bff244
Process: 13214 ExecStartPre=/usr/lib/ceph/ceph-osd-prestart.sh --id 0
(code=exited, status=0/SUCCESS)
Process: 13218 ExecStart=/usr/bin/ceph-osd -f --id 0 --setuser ceph
--setgroup ceph (code=dumped, signal=ABRT)
Main PID: 13218 (code=dumped, signal=ABRT)
Mem peak: 14.3M
CPU: 221ms
Claude AI pointed to a missing link (/var/lib/ceph/osd/ceph-0/block.db >>
/dev/nvme0n1p4)
Indeed creating the link fixed the problem:
sudo ln -s /dev/nvme0n1p4 /var/lib/ceph/osd/ceph-0/block.db
sudo chown -h ceph:ceph /var/lib/ceph/osd/ceph-0/block.db
sudo chown ceph:ceph /dev/nvme0n1p4
sudo systemctl status ceph-osd@0 --no-pager -l
● [email protected] - Ceph object storage daemon osd.0
Loaded: loaded (/usr/lib/systemd/system/[email protected];
enabled-runtime; preset: enabled)
Active: active (running) since Tue 2026-06-23 20:22:56 UTC; 2min 16s ago
Invocation: 43784a1d93c84d01a576b3467899a1e4
Process: 13551 ExecStartPre=/usr/lib/ceph/ceph-osd-prestart.sh --id 0
(code=exited, status=0/SUCCESS)
Main PID: 13556 (ceph-osd)
Tasks: 59
Memory: 71.4M (peak: 498.6M)
CPU: 1.720s
CGroup: /system.slice/system-ceph\x2dosd.slice/[email protected]
└─13556 /usr/bin/ceph-osd -f --id 0 --setuser ceph --setgroup ceph
sudo ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 14.94339 root default
-3 14.94339 host <HOSTNAME>
0 hdd 14.94339 osd.0 up 1.00000 1.00000
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ceph 20.2.0-0ubuntu2
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
Date: Wed Jun 24 17:20:10 2026
InstallationDate: Installed on 2026-06-18 (6 days ago)
InstallationMedia: Ubuntu-Server 26.04 "Resolute Raccoon" - Release amd64
(20260420.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm
SourcePackage: ceph
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ceph (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2158131
Title:
Issue when creating a ceph OSD
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