On Wed, Apr 19, 2023 at 10:29 AM Reto Gysi <rlgysi@xxxxxxxxx> wrote:
>
> yes, I used the same ecpool_hdd also for cephfs file systems. The new pool ecpool_test I've created for a test, I've also created it with application profile 'cephfs', but there aren't any cephfs filesystem attached to it.
This is not and has never been supported.
> root@zephir:~# ceph fs status
> backups - 2 clients
> =======
> RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS
> 0 active backups.debian.runngh Reqs: 0 /s 253k 253k 21.3k 899
> POOL TYPE USED AVAIL
> cephfs.backups.meta metadata 1366M 2115G
> cephfs.backups.data data 16.7T 16.4T
> ecpool_hdd data 29.3T 29.6T
> rgysi - 5 clients
> =====
> RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS
> 0 active rgysi.debian.uhgqen Reqs: 0 /s 409k 408k 40.8k 24.5k
> POOL TYPE USED AVAIL
> cephfs.rgysi.meta metadata 1453M 2115G
> cephfs.rgysi.data data 4898G 17.6T
> ecpool_hdd data 29.3T 29.6T
> jellyfin - 1 clients
> ========
> RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS
> 0 active jellyfin.debian.dcsocv Reqs: 0 /s 11.2k 10.9k 1935 1922
> POOL TYPE USED AVAIL
> cephfs.jellyfin.meta metadata 1076M 2115G
> cephfs.jellyfin.data data 0 17.6T
> ecpool_hdd data 29.3T 29.6T
> STANDBY MDS
> jellyfin.zephir.iqywsn
> backups.zephir.ygigch
> rgysi.zephir.diylss
> MDS version: ceph version 17.2.6 (d7ff0d10654d2280e08f1ab989c7cdf3064446a5) quincy (stable)
> root@zephir:~#
>
> I think I remember that I've read once something in documentation that using the same pool for <x> could lead to ?naming? conflicts or something. But later on I couldn't find it anymore and couldn't remember what <x> was, and then I forgot about it.
> So my understanding of the pull request is that I should migrate the cephfs data from ecpool_hdd to a separate erasure code pool for cephfs and then remove the 'cephfs' application tag from the ecpool_hdd pool, correct?
There might be more to it as far "unregistering" the pool from CephFS
goes. Venky and Patrick (CCed) should be able to help with that.
Thanks,
Ilya
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