Veeam B&R 12 Linux Agent fails (maybe bc 64gb .img file)

[backupUserrun]

hi,
Running veeam agent 6.20 on a Ubuntu 22.04.4 LTS physical machine, destination is a local Veeam B&R 12.2.0.334 server (win server 2022, the backup repo is on a local direct attached NTFS disk with several TB of free space, not smb nor nfs, just a local windows disk).

the agent was backing up just fine, then noticed it started failing with this error:

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Starting incremental backup to [172.17.X.X] Default Backup Repository
File system indexing is enabled
[error] Backing up files /                                                        
[error] Failed to perform backup
[error] Invalid bitmap access. Sub-bitmap number: [2035]. Count of bitmaps: [2035]
[error] Sync operation failed
[error] Agent failed to process method {FileBackup.SyncDirs}
[error] Processing finished with errors at 2024-10-05 20:43:06 UTC

failing started exactly after this directory was created (and if i exclude this path, in the file-level backup settings, then the backup succeeds):
(also note, i did try enabling "Backup Directly from live file system" and it fails with or without this option enabled)

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lss /win10VNCdocker/
total 13G
drwxr-xr-x 25 root root 4.0K Oct  6 12:36 ..
-rw-r--r--  1 root root  64G Oct  1 11:43 data.img
-rw-r--r--  1 root root 528K Sep 25 17:26 windows.vars
drwxrwxrwx  2 root root 4.0K Sep 25 15:54 .
-rw-r--r--  1 root root    0 Sep 25 15:54 windows.boot
-rw-r--r--  1 root root 3.5M Sep 25 15:40 windows.rom
-rw-r--r--  1 root root   18 Sep 25 15:40 windows.mac
-rw-r--r--  1 root root   13 Sep 25 15:40 windows.base
-rw-r--r--  1 root root    5 Sep 25 15:40 windows.ver

(below are file sizes in MB):
0       windows.boot
1       windows.base
1       windows.mac
1       windows.vars
1       windows.ver
4       windows.rom
12510   data.img
12514   total

it seems we cant post/paste in images , so here is the config on the agent side (is a file level backup , not a volume level as we need to exclude some paths) :

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 Repository name: [172.17.X.X] Default Backup Repository                      
 Options:                                                 
    Compression: Lz4                                      
    Max points: 7                                         
    Block size: 1024 KB                                   
    Index all files and directories selected for backup   
    Retries are allowed                                   
    Retry count: 3                                        
    Retry timeout: 10 minute(s)        

   Objects for backup:                 
    Include directory: /               
    Exclude directory: /Xstorage/
 Schedule:                             
    Every Mon, Wed, Sat                
    At: 03:50                          
 Maintenance:                          
    Days: 30                           
 Health check:                         
    Every first Mon of every month     
    disabled                           
 Repository immutability:              
    disabled     

any ideas why?
thank you

[PTide]

Hi,

Kindly post your case ID so that your post won't get removed in the next 24 hours

Thanks!

[jsattelb]

I encounter the same with a single client. File size is ~1.6 Mb. Fully readable without errors. Removing the file allows the backup to complete properly. Copying it back causes the backup to fail.

[PTide]

Hi

Unfortunately that's not something that could be troubleshooted via forums. Please open a support case and post your case number for reference.

Thanks!