Hi Nicola,
from my experience "stalled" reads often indicate low-level/hardware
issues - you might want to check kernel log on relevant nodes - likely
there've been some relevant errors reported.
Thanks,
Igor
On 07.03.2025 19:05, Nicola Mori wrote:
Dear Ceph users,
after upgrading from 19.2.0 to 19.2.1 (via cephadm) my cluster started
showing some warnings never seen before:
29 OSD(s) experiencing slow operations in BlueStore
13 OSD(s) experiencing stalled read in db device of BlueFS
I searched for these messages but didn't find much. I also noticed
that when browsing the CephFS folders (using the kernel module for the
client) sometimes the client gets stuck for a long time before showing
the folder content; however I don't know if this can be related to the
above warnings.
I'd need help to understand what's going on and eventually how to
troubleshoot it.
Thanks,
Nicola
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