Le 2025-08-18 11:30, Gilles Mocellin a écrit :
On Hi Cephers,
I'm building a new Squid cluster with cephadm on Ubuntu 24.04.
After expanding my cluster in the Dashboard (adding my 7 hosts),
I choose throughput_optimized proflie wich create a generic spec for
hybrid HDD/SSD :
service_type: osd
service_id: throughput_optimized
service_name: osd.throughput_optimized
placement:
host_pattern: '*'
spec:
data_devices:
rotational: 1
db_devices:
rotational: 0
encrypted: true
filter_logic: AND
objectstore: bluestore
The cluster is for a LAB environment, on each of the 7 nodes, I have 17
HDD SAS 1.2TB drives and 1 SSD SAS Enterprise 400GB drive.
On my first try, only 28 OSD where created (out of the 119), the others
appeared as down, but they won't start, I didn't find systemd units
created on the hosts.
But, the VGs and LVs where created, there are 17 LVs on the SSD for
WAL/DB of the 17 HDD (yes, small : 29GB).
On my second try, it creates 72 OSDs, still it stops, and never tries
to continue, or re-create the down OSDs.
I didn't manage to find them, but it seems I saw some OSD creation
timeout in the logs...
What can I do to have my missing OSD created ?
Some additional information :
ceph -s
cluster:
id: 3ebf83bf-7927-11f0-9f3a-246e96bd90a4
health: HEALTH_OK
services:
mon: 5 daemons, quorum
fidcl-lyo1-sto-sds-lab-01,fidcl-lyo1-sto-sds-lab-02,fidcl-lyo1-sto-sds-lab-03,fidcl-lyo1-sto-sds-lab-04,fidcl-lyo1-sto-sds-lab-05
(age 3d)
mgr: fidcl-lyo1-sto-sds-lab-01.ovbjpb(active, since 3d), standbys:
fidcl-lyo1-sto-sds-lab-02.nqdhpl, fidcl-lyo1-sto-sds-lab-03.cizytz
osd: 119 osds: 72 up (since 3d), 89 in (since 41m)
data:
pools: 1 pools, 1 pgs
objects: 2 objects, 769 KiB
usage: 1.5 TiB used, 79 TiB / 80 TiB avail
pgs: 1 active+clean
One of the "missing" (not fully created) OSD, is present, but not found
:
ceph osd find 6
{
"osd": 6,
"addrs": {
"addrvec": []
},
"osd_fsid": "f8745284-8026-4713-8329-cd57cb6842f7",
"crush_location": {}
}
ceph osd info 6
osd.6 down out weight 0 up_from 0 up_thru 0 down_at 0
last_clean_interval [0,0) autoout,exists,new
f8745284-8026-4713-8329-cd57cb6842f7
The missing OSDs are not chown with the device list command :
ceph device ls | grep osd.6
is empty...
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