Hi guys. Disclaimer, although I have been doing IT for decades but ceph
ehh … not so much. However, I have had great luck with a good solid
HEALTH_OK couple of clusters for several weeks now. Created cephfs with
some subvolumes, mounted them and they are all working great. However,
I’m running into an issue that I can’t find the solution of. I’m
wanting snapshots of subvolumes of our cephfs, and it just won’t do it.
I even upgraded today from 16.2.7 to 16.2.9 which went GREAT but still
no snapshot. I can snapshot the base volume main-test just fine without
error. But any subvolume snapshot create command results in this: (some
info modified to hide private info)
[ceph: root@cepht02 /]# ceph fs subvolume snapshot create main-test
swarm swarmsnap1
Error EPERM: error in mkdir /volumes/_nogroup/swarm/.snap/swarmsnap1
Other info if it helps:
[ceph: root@cepht02 /]# ceph fs subvolume info main-test testdata
{
"atime": "2022-05-13 18:38:23",
"bytes_pcent": "undefined",
"bytes_quota": "infinite",
"bytes_used": 25567695102,
"created_at": "2022-05-13 15:06:10",
"ctime": "2022-05-13 18:38:23",
"data_pool": "cephfs.main-test.data",
"features": [
"snapshot-clone",
"snapshot-autoprotect",
"snapshot-retention"
],
"gid": 3001,
"mode": 16893,
"mon_addrs": [
"10.0.0.45:6789",
"10.0.0.46:6789",
"10.0.0.44:6789"
],
"mtime": "2022-01-06 14:26:53",
"path":
"/volumes/_nogroup/testdata/147f9699-67c0-4576-8312-ab8b6d73e928",
"pool_namespace": "",
"state": "complete",
"type": "subvolume",
"uid": 3001
}
ceph version 16.2.9 (4c3647a322c0ff5a1dd2344e039859dcbd28c830) pacific
(stable)
[ceph: root@cepht02 /]# ceph -s
cluster:
id: b315ef82-bf3a-11ec-ba0a-506b8d9376cc
health: HEALTH_OK
services:
mon: 3 daemons, quorum cepht02,cepht03,cepht01 (age 72m)
mgr: cepht02.pcoour(active, since 73m), standbys: cepht01.opwneq
mds: 1/1 daemons up, 1 standby
osd: 10 osds: 10 up (since 67m), 10 in (since 6d)
data:
volumes: 1/1 healthy
pools: 5 pools, 129 pgs
objects: 249.37k objects, 190 GiB
usage: 445 GiB used, 4.4 TiB / 4.9 TiB avail
pgs: 129 active+clean
io:
client: 11 KiB/s wr, 0 op/s rd, 0 op/s wr
**
*John Selph*
*System Administrator*
*L3 Technologies Integrated mission systems*
*Subsidiary of L3Harris Technologies, Inc.*
m +1 903 413 3060
L3Harris.com / john.d.selph@xxxxxxxxxxxx
10001 Jack Finney Blvd / Greenville, Tx 75402 / USA
<http://www.l3harris.com/>
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