version 22 still have media swap issue

[Brock Palen]

I had hope this was resolved in the new version but it appears it’s still possible with consolidate jobs that you can hang the system.

Short SD never actually lets a volume swap to a second job. This happens when you have multiple concurrent jobs allowed. I would be ok serilizing virtual jobs but that appears not possible if you want to allow parallel real jobs.

*list joblog jobid=71021 Automatically selected Catalog: myth_catalog Using Catalog "myth_catalog" 2023-01-07 04:00:26 myth-dir JobId 71021: Start Virtual Backup JobId 71021, Job=mlds-host.2023-01-07_04.00.22_27 2023-01-07 04:00:26 myth-dir JobId 71021: Bootstrap records written to /var/lib/bareos/myth-dir.restore.2.bsr 2023-01-07 04:00:26 myth-dir JobId 71021: Consolidating JobIds 70983,70192 containing 1327 files 2023-01-07 04:00:26 myth-dir JobId 71021: Connected Storage daemon at myth.sheptechllc.com:9103, encryption: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 2023-01-07 04:00:26 myth-dir JobId 71021: Encryption: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 2023-01-07 04:00:26 myth-dir JobId 71021: Using Device "FileStorage3" to read. 2023-01-07 04:00:26 myth-dir JobId 71021: Using Device "FileStorage4" to write. 2023-01-07 04:00:26 myth-sd JobId 71021: Volume "AI-Consolidated-2391" previously written, moving to end of data. 2023-01-07 04:00:26 myth-sd JobId 71021: Ready to append to end of Volume "AI-Consolidated-2391" size=9711190052 2023-01-07 04:00:26 myth-sd JobId 71021: Warning: stored/vol_mgr.cc:495 Need volume from other drive, but swap not possible. Status: read=0 num_writers=1 num_reserve=0 swap=0 vol=AI-Consolidated-2391 from dev="FileStorage4" (/mnt/bacula) to "FileStorage3" (/mnt/bacula) 2023-01-07 04:00:26 myth-sd JobId 71021: Warning: stored/acquire.cc:336 Read acquire: stored/label.cc:255 Could not reserve volume AI-Consolidated-2391 on "FileStorage3" (/mnt/bacula) 2023-01-07 04:00:26 myth-sd JobId 71021: Please mount read Volume "AI-Consolidated-2391" for: Job: mlds-host.2023-01-07_04.00.22_27 Storage: "FileStorage3" (/mnt/bacula) Pool: AI-Incremental Media type: File 2023-01-07 04:05:26 myth-sd JobId 71021: Warning: stored/vol_mgr.cc:495 Need volume from other drive, but swap not possible. Status: read=0 num_writers=1 num_reserve=0 swap=0 vol=AI-Consolidated-2391 from dev="FileStorage4" (/mnt/bacula) to "FileStorage3" (/mnt/bacula)


This just goes on forever until you restart the SD which will cause the job to fail rather than wait on mount, and the next time it will run fine if it is able to grab the volume that’s needed first.

Expected behavior is that once the job that first reserved the volume finishes it is released for the other job that’s waiting.


Brock Palen
bro...@mlds-networks.com
www.mlds-networks.com
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