If I remember correctly, mounting cephfs on osd hosts was never an
issue. Mapping RBD images was where the issue would come up.
I've got a few single node ceph clusters that I use for test and they
have a cephfs mount to themselves that has never caused an issue (beyond
systemd not knowing cephfs is a network filesystem.... thanks Redhat)
-paul
On 12/24/21 07:52, Burkhard Linke wrote:
Hi,
we are planning a new cluster as backend for our new bareos backup
setup. It currently supports ceph either via S3 or via filesystem (the
rados plugin is deprecated in the current release).
Since I would like to avoid the extra S3 hop (storage daemon <-> ceph
rgw) our POC will use cephfs. To further isolate the cluster from all
other system, I would also like to run the bareos storage daemon
colocated to the CEPH OSDs.
This will require mounting the cephfs instance on the hosts. In the
past this was considered a problem since deadlocks may occur. Is this
still the case? Or is mounting cephfs on the OSD hosts (kernel
implementation) considered safe now?
Best regards and happy holidays,
Burkhard Linke
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