Hi,
I haven't dealt with this myself yet, but the docs [0] state:
A bug was discovered in root_squash which would potentially lose
changes made by a client restricted with root_squash caps. The fix
required a change to the protocol and a client upgrade is required.
This is a HEALTH_ERR warning because of the danger of inconsistency
and lost data. It is recommended to either upgrade your clients,
discontinue using root_squash in the interim, or silence the warning
if desired.
To evict and permanently block broken clients from connecting to the
cluster, set the required_client_feature bit client_mds_auth_caps.
Do you have the option to upgrade your client(s) as well?
[0]
https://docs.ceph.com/en/latest/cephfs/health-messages/#mds-clients-broken-rootsquash
Zitat von Nicola Mori <mori@xxxxxxxxxx>:
The upgrade ended successfully, but now the cluster reports this error:
MDS_CLIENTS_BROKEN_ROOTSQUASH: 1 MDS report clients with broken
root_squash implementation
From what I understood this is due to a new feature meant to fix a
bug in the root_squash implementation, and that will be released
with version 19. I didn't find anything about a backport to 18.2.4.
Can someone share some info please? Especially about if and how it
can be fixed.
Thanks in advance,
Nicola
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