To clarify, there's no "issue" with the code itself. It's just that the code now reveals a potential "issue" with the OSD's underlying device, as Igor explained. This warning can pop up starting from Quincy v17.2.8 (PR 59468), Reef v18.2.5 (PR #59466) and Squid v19.2.1 (PR #59464). Regards, Frédéric. ----- Le 2 Mai 25, à 12:36, Eugen Block eblock@nde.ag a écrit :
The link Frederic shared is for 19.2.1, so yes, the new warning appeared in 19.2.1 as well.
Zitat von Laimis Juzeliūnas <laimis.juzeliunas@oxylabs.io>:
Hi all,
Could this also be an issue with 19.2.2? We have seen few of these warnings right after upgrading from 19.2.0. A simple OSD restart removed them, but we haven’t seen them before. There are some users on the Ceph Slack channels discussing this observation in 19.2.2 as well.
Best, Laimis J.
On 2 May 2025, at 13:11, Igor Fedotov <igor.fedotov@croit.io> wrote:
Hi Everyone,
well, indeed this warning has been introduced in 18.2.6.
But I wouldn't say that's not an issue. Having it permanently visible (particularly for a specific OSD only) might indicate some issues with this OSD which could negatively impact overall cluster performance.
OSD log to be checked for potential clues and more research on the root cause is recommended.
And once again - likely that's not a regression in 18.2.6 but rather some additional diagnostics brought by the release which reveals a potential issue.
Thanks,
Igor
On 02.05.2025 11:19, Frédéric Nass wrote:
Hi Michel,
This is not an issue. It's a new warning that can be adjusted or muted. Check this thread [1] and this part [2] of the Reef documentation about this new alert. Came to Reef with PR #59466 [3].
Cheers, Frédéric.
[1] https://www.google.com/url?q=https://www.spinics.net/lists/ceph-users/msg86131.html&source=gmail-imap&ust=1746785596000000&usg=AOvVaw27M4y8QaoDcRiJBkxDVVoK [2] https://www.google.com/url?q=https://docs.ceph.com/en/latest/rados/operations/health-checks/%23bluestore-slow-op-alert&source=gmail-imap&ust=1746785596000000&usg=AOvVaw21VoozoT2KT6FESbkkVJ_w [3] https://www.google.com/url?q=https://github.com/ceph/ceph/pull/59466&source=gmail-imap&ust=1746785596000000&usg=AOvVaw0nnpOvrWFLB1lAk0Ekms1i
----- Le 2 Mai 25, à 9:44, Michel Jouvin michel.jouvin@ijclab.in2p3.fr a écrit :
Hi,
Since our upgrade to 18.2.6 2 days ago, our cluster is reporting the warning "1 OSD(s) experiencing slow operations in BlueStore":
[root@dig-osd4 bluestore-slow-ops]# ceph health detail HEALTH_WARN 1 OSD(s) experiencing slow operations in BlueStore [WRN] BLUESTORE_SLOW_OP_ALERT: 1 OSD(s) experiencing slow operations in BlueStore osd.247 observed slow operation indications in BlueStore
I have never seen this warning before so I've the feeling it is somehow related to the upgrade and it doesn't seem related to the regression mentioned in another thread (that should result in an OSD crash). Googling quickly, I found this reported on 19.2.1 with SSD where in my case it is an HDD. I don't know if the workaround mentioned in the issue (bdev_xxx_discard=true) also applies to 18.2.6...
Did somebody saw this in 18.2.x? Any recommandation? Our plan was, according to best practicies described recently in another thread to move from 18.2.2 to 18.2.6 and then from 18.2.6 to 19.2.2... Will 19.2.2 clear this issue (at the risk of others as it is probably not widely used)?
Best regards,
Michel _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
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