Thanks John,

Is it advisable that I run bacula-sd on the remote ZFS based filer with RAID 
configured disks.
At the moment bacula-dir & bacula-sd run on a single host. The disk space from 
the filer is used through NFS mounts on the bacula host.

Yateen



From: Josh Fisher <[email protected]>
Sent: Monday, October 4, 2021 8:27 PM
To: [email protected]
Subject: Re: [Bacula-users] Storage Daemon stopped with NFS mounted storage



On 10/2/21 2:52 AM, Shaligram Bhagat, Yateen (Nokia - IN/Bangalore) wrote:
Hi All,

We are using Bacula 9.4.4 with PostGreSQL for disk based backeup.

Disk space is available to Bacula storage daemon as an NFS mount from a remote 
ZFS based filer that has RAID configured disks.

Recently one of the disk in the RAID array failed, degrading the remote ZFS 
pool.



With NFS, file system caching is on the server hosting the ZFS filesystem. 
Additionally, there is data and metadata caching on the client. Data updates 
are asynchronous, but metadata updates are synchronous. Due to the synchronous 
metadata updates, both data and metadata updates persist across NFS client 
failure. However they do not persist across NFS server failure, and that is 
what happened here, I think, although it is not clear why a single disk failure 
in a RAID array would cause an NFS failure.

In short, iSCSI will be less troublesome for use with Bacula SD, since the 
Bacula SD machine will be the only client using the share anyway.


Later we observed the Bacula storage daemon in stopped state.

Question is  : can the disturbance on the NFS mounted disk ( from the remote 
ZFS based filer) make bacula-sd to stop?



If you mean bacula-sd crashed, then no, it should not crash if one of its 
storage devices fails.



Thanks
Yateen





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