backup failed with a stange message

[grocanar]

hi

i m using netbackup 9.1.0.1

and from time to time i have some backup of vm that failed.

Here is the message i got on the console 

16 mai 2023 02:55:59 - Critical bpbrm (pid=30614) from client dockerfg.france-genomique.org: FTL - cleanup() failed, status 6
16 mai 2023 02:55:59 - Info bptm (pid=30638) waited for full buffer 1 times, delayed 13377 times
16 mai 2023 02:55:59 - Info bptm (pid=30638) EXITING with status 90 <----------
16 mai 2023 02:56:00 - Info netmedia.admin.institut-genomique.fr (pid=30638) StorageServer=PureDisk:netmedia.admin.institut-genomique.fr; Report=PDDO Stats for (netmedia.admin.institut-genomique.fr): scanned: 2 KB, CR sent: 0 KB, CR sent over FC: 0 KB, dedup: 100,0%, cache disabled, where dedup space saving:100,0%, compression space saving:0,0%
16 mai 2023 02:56:00 - Critical bpbrm (pid=30614) unexpected termination of client dockerfg.france-genomique.org
16 mai 2023 02:56:00 - Info bpbkar (pid=0) done. status: 6: the backup failed to back up the requested files

When i m looking on the backup host it seems that theres s no problem

02:52:36.583 [7358] <2> process_requests: child_args[11] = dockerfg.france-genomique.org
02:52:36.584 [7358] <2> process_requests: child_args[46] = dockerfg.france-genomique.org_1684198511
02:52:36.584 [7358] <2> process_requests: child_args[62] = bid@BCKP_VM_dockerfg.france-genomique.org_1684198511
03:18:29.277 [14269] <2> get_vm_backupid_from_state_file_ex: For prev_incr_bt (1684112362), found backup_id: dockerfg.france-genomique.org_1684112403
03:18:29.280 [14269] <2> get_vm_backupid_from_state_file_ex: For last_full_bt (1684112362), found backup_id: dockerfg.france-genomique.org_1684112403
03:18:29.561 [14274] <2> bpcd_put_accl_client_backup_ids: got file name :bid@BCKP_VM_dockerfg.france-genomique.org_1684200065
03:18:29.561 [14274] <2> sanitary_mb_str: String "bid@BCKP_VM_dockerfg.france-genomique.org_1684200065" is considered sanitary.
03:18:29.562 [14274] <2> save_backup_id_list: backup id list saved to file /usr/openv/tmp/bid@BCKP_VM_dockerfg.france-genomique.org_1684200065
03:18:29.789 [14276] <2> recv_data_and_write_to_file_in_nb_tmp_dir: will be receiving data for <align@dockerfg.france-genomique.org_1684112403>
03:18:30.618 [14278] <2> process_requests: fork cmd = /usr/openv/netbackup/bin/bpbkar bpbkar -r 2678400 -dt 0 -to 0 -bpstart_time 1684200365 -clnt dockerfg.france-genomique.org -class B
CKP_VM -sched Bckp_VM_quotidien -st FULL -bpstart_to 300 -bpend_to 300 -read_to 900 -ru root -stream_count 253 -stream_number 253 -jobgrpid 1435055 -blks_per_buffer 512 -use_otm -fso -i
fr -pid 36104 -mediasvr netmedia.admin.institut-genomique.fr -bt 1684200065 -t 0 -b dockerfg.france-genomique.org_1684200065 -kl 7 -fi -S netbackup.cng.fr -fim NONE -ct 40 -fscp -S netb
ackup.cng.fr -storagesvr netmedia.admin.institut-genomique.fr -bidlist bid@BCKP_VM_dockerfg.france-genomique.org_1684200065
03:18:30.621 [14285] <2> process_requests: child_args[11] = dockerfg.france-genomique.org
03:18:30.622 [14285] <2> process_requests: child_args[46] = dockerfg.france-genomique.org_1684200065
03:18:30.622 [14285] <2> process_requests: child_args[62] = bid@BCKP_VM_dockerfg.france-genomique.org_1684200065

There s no problem at 02:56

when i look more precisely on the media server i got 

02:52:36.686 [30614.30614] <2> write_file_names: buffering file name 'BACKUP /usr/openv/netbackup/online_util/fi_cntl/bpfis.fim.dockerfg.france-genomique.org_1684198496.1.0.NBU_DATA.xml
USING /dev/mapper/vg_dvoricus-lv_root OPTIONS:FITYPE=MIRROR,MNTPOINT=/,FSTYPE=ext3' for output
02:52:36.749 [30614.30614] <2> non_mpx_backup_archive_verify_import: from client dockerfg.france-genomique.org: INF - Backing up vCenter server chaos.genoscope.cns.fr, ESX host cnsvsan1
.genoscope.cns.fr, BIOS UUID 420e4392-ce17-69a7-65ca-f39ff3be8fcb, Instance UUID 500e60cf-ee1f-6bb0-1400-0e01e26f34f2, Display Name dockerfg.france-genomique.org, Hostname dockerfg.fran
ce-genomique.org
02:52:37.034 [30614.30614] <2> non_mpx_backup_archive_verify_import: from client dockerfg.france-genomique.org: INF - Snapshot mapping type: ON
02:52:37.034 [30614.30614] <2> non_mpx_backup_archive_verify_import: from client dockerfg.france-genomique.org: INF - Snapshot BLIB type: ON
02:55:59.919 [30614.30614] <32> non_mpx_backup_archive_verify_import: from client dockerfg.france-genomique.org: FTL - cleanup() failed, status 6
02:55:59.978 [30614.30614] <2> non_mpx_backup_archive_verify_import: client dockerfg.france-genomique.org EXIT STATUS = 6: the backup failed to back up the requested files (line 49216)
02:56:00.053 [30614.30614] <2> bpbrm Exit: sending signal=1 to client=dockerfg.france-genomique.org, client_pid=7358
02:56:00.231 [30614.30614] <32> bpbrm Exit: unexpected termination of client dockerfg.france-genomique.org
03:18:27.517 [36104.36104] <2> logparams: -backup -S netbackup.cng.fr -c dockerfg.france-genomique.org -ct 40 -ru root -cl BCKP_VM -sched Bckp_VM_quotidien -b dockerfg.france-genomique.
org_1684200065 -bt 1684200065 -dt 0 -st 0 -mediasvr netmedia.admin.institut-genomique.fr -jobid 1435230 -jobgrpid 1435055 -masterversion 910100 -maxfrag 51200 -bpstart_time 1684200365 -

does someone know what happe and how to prevent this problem?