I’m starting to move to dedupe storage backend with BTRFS. My current system uses disk volumes with migration jobs to tape. These are almost all AI jobs.
When consoliations started happening it appears there is differnet behavior and I’m not sure writes are happening as expected. Bareos: Backup Unknown term code of sch-hp-desktop-fd Virtual Full. Now I see the line: 04-Mar 06:57 myth-sd JobId 116215: stored/acquire.cc:156 Changing read device. Want Media Type="File" have="File-Dedupe” With my tape migraitons all the time, allowing it to switch from File to LTO pull in the blocks that were migrated to tape and I expeced this to just work but it appears if you open a dedupe device and then not use it it tosses an error: 04-Mar 06:57 myth-sd JobId 116215: stored/acquire.cc:156 Changing read device. Want Media Type="File" have="File-Dedupe" device="BtrfsStorage1" (/mnt/bareos) 04-Mar 06:57 myth-sd JobId 116215: Releasing device "BtrfsStorage1" (/mnt/bareos). 04-Mar 06:57 myth-sd: ERROR in backends/dedupable_device.cc:459 Trying to flush dedup volume when none are open. 04-Mar 06:57 myth-sd JobId 116215: Fatal error: Failed to flush device "BtrfsStorage1" (/mnt/bareos). 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/acquire.cc:206 No suitable device found to read Volume "AI-Incremental-2304" 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/mount.cc:885 Cannot open Dev="BtrfsStorage1" (/mnt/bareos), Vol=AI-Incremental-2304 04-Mar 06:57 myth-sd JobId 116215: End of all volumes. 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/mac.cc:698 Fatal append error on device "BtrfsStorage" (/mnt/bareos): ERR=Attempt to read past end of tape or file. Full Job Log Note the defaulte stuff I used client compression and didn’t deflate before. I want to keep client compression (minimize bandwidth over the WAN) but decompress for the dedupe and BTFS compression to take over. I don’t think that is part of this issue. 04-Mar 06:57 myth-dir JobId 116215: Version: 25.0.3~pre7.511272b66 (18 February 2026) Ubuntu 24.04.4 LTS 04-Mar 06:57 myth-dir JobId 116215: Start Virtual Backup JobId 116215, Job=sch-hp-desktop-Users-No-Pictures.2026-03-04_04.00.05_24 04-Mar 06:57 myth-dir JobId 116215: Bootstrap records written to /var/lib/bareos/myth-dir.restore.48.bsr 04-Mar 06:57 myth-dir JobId 116215: Consolidating JobIds 116137,115099,115141 containing 9 files 04-Mar 06:57 myth-dir JobId 116215: Connected Storage daemon at myth.sheptechllc.com:9103, encryption: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 04-Mar 06:57 myth-dir JobId 116215: Encryption: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 04-Mar 06:57 myth-dir JobId 116215: Using Device "FileStorage" to read. 04-Mar 06:57 myth-sd JobId 116215: Using just in time reservation for job 116215 04-Mar 06:57 myth-dir JobId 116215: Using Device "JustInTime Device" to write. 04-Mar 06:57 myth-sd JobId 116215: Moving to end of data on volume "AI-Consol-Dedup-2928" 04-Mar 06:57 myth-sd JobId 116215: Ready to append to end of Volume "AI-Consol-Dedup-2928" at file=0. 04-Mar 06:57 myth-sd JobId 116215: stored/acquire.cc:156 Changing read device. Want Media Type="File-Dedupe" have="File" device="FileStorage" (/mnt/bacula) 04-Mar 06:57 myth-sd JobId 116215: Releasing device "FileStorage" (/mnt/bacula). 04-Mar 06:57 myth-sd JobId 116215: Media Type change. New read device "BtrfsStorage1" (/mnt/bareos) chosen. 04-Mar 06:57 myth-sd JobId 116215: Ready to read from volume "AI-Consol-Dedup-2918" on device "BtrfsStorage1" (/mnt/bareos). 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: Compressor on device BtrfsStorage is GZIP 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: BtrfsStorage OUT:[SD->inflate=yes->deflate=no->DEV] IN:[DEV->inflate=no->deflate=yes->SD] 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: Compressor on device BtrfsStorage is GZIP 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: BtrfsStorage OUT:[SD->inflate=yes->deflate=no->DEV] IN:[DEV->inflate=no->deflate=yes->SD] 04-Mar 06:57 myth-sd JobId 116215: Spooling data ... 04-Mar 06:57 myth-sd JobId 116215: Forward spacing Volume "AI-Consol-Dedup-2918" to file:block 0:40942. 04-Mar 06:57 myth-sd JobId 116215: End of Volume at file 0 on device "BtrfsStorage1" (/mnt/bareos), Volume "AI-Consol-Dedup-2918" 04-Mar 06:57 myth-sd JobId 116215: stored/acquire.cc:156 Changing read device. Want Media Type="File" have="File-Dedupe" device="BtrfsStorage1" (/mnt/bareos) 04-Mar 06:57 myth-sd JobId 116215: Releasing device "BtrfsStorage1" (/mnt/bareos). 04-Mar 06:57 myth-sd: ERROR in backends/dedupable_device.cc:459 Trying to flush dedup volume when none are open. 04-Mar 06:57 myth-sd JobId 116215: Fatal error: Failed to flush device "BtrfsStorage1" (/mnt/bareos). 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/acquire.cc:206 No suitable device found to read Volume "AI-Incremental-2304" 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/mount.cc:885 Cannot open Dev="BtrfsStorage1" (/mnt/bareos), Vol=AI-Incremental-2304 04-Mar 06:57 myth-sd JobId 116215: End of all volumes. 04-Mar 06:57 myth-sd JobId 116215: Fatal error: stored/mac.cc:698 Fatal append error on device "BtrfsStorage" (/mnt/bareos): ERR=Attempt to read past end of tape or file. 04-Mar 06:57 myth-sd JobId 116215: Elapsed time=00:00:01, Transfer rate=210.0 K Bytes/second 04-Mar 06:57 myth-sd JobId 116215: Releasing device "BtrfsStorage" (/mnt/bareos). 04-Mar 06:57 myth-sd JobId 116215: Releasing device "FileStorage5" (/mnt/bacula). 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: inflate ratio: 378.56% 04-Mar 06:57 myth-sd JobId 116215: autoxflate-sd: deflate ratio: 26.42% 04-Mar 06:57 myth-dir JobId 116215: Replicating deleted files from jobids 116137,115099,115141 to jobid 116215 04-Mar 06:57 myth-dir JobId 116215: Error: Bareos myth-dir 25.0.3~pre7.511272b66 (18Feb26): OS Information: Ubuntu 24.04.4 LTS JobId: 116215 Job: sch-hp-desktop-Users-No-Pictures.2026-03-04_04.00.05_24 Backup Level: Virtual Full Client: "sch-hp-desktop-fd" 24.0.1~pre27.250812184 (24Jan25) Microsoft Windows 8 (build 9200), 64-bit,Windows-native FileSet: "Windows All Users No Pictures" 2019-03-24 21:32:52 Pool: "AI-Consolidated-Dedupe" (From Job Pool's NextPool resource) Catalog: "myth_catalog" (From Client resource) Storage: "BtrfsStorage" (From Storage from Pool's NextPool resource) Scheduled time: 04-Mar-2026 04:00:05 Start time: 11-Feb-2026 01:08:16 End time: 11-Feb-2026 01:13:08 Elapsed time: 4 mins 52 secs Priority: 8 Allow Mixed Priority: no SD Files Written: 4 SD Bytes Written: 210,067 (210.0 KB) Rate: 0.7 KB/s Volume name(s): Volume Session Id: 151 Volume Session Time: 1772410707 Last Volume Bytes: 0 (0 B) SD Errors: 1 SD termination status: Fatal Error Accurate: yes Bareos binary info: Bareos community build (UNSUPPORTED): Get professional support from https://www.bareos.com Job triggered by: User Termination: *** Backup Error *** 04-Mar 06:57 myth-dir JobId 116215: Rescheduled Job sch-hp-desktop-Users-No-Pictures.2026-03-04_04.00.05_24 at 04-Mar-2026 06:57 to re-run in 1800 seconds (04-Mar-2026 07:27). Brock Palen [email protected] www.mlds-networks.com Websites, Linux, Hosting, Joomla, Consulting -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/bareos-users/6D4AD368-8A1B-42BC-A886-A766A060F11C%40mlds-networks.com.
