I have a cluster runing proxmox 3.4. Vms on DRBD. Guest SO is 2003 and 2008. Backup log show:
INFO: Starting Backup of VM 103 (qemu)
INFO: status = running
INFO: update VM 103: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-103-2015_04_11-03_50_56.vma.lzo'
INFO: started backup task '74b7fc76-0ffc-474a-b81a-f3ab414c3343'
INFO: status: 0% (45613056/322122547200), sparse 0% (167936), duration 3, 15/15 MB/s
ERROR: VM 103 not running
INFO: aborting backup job
ERROR: VM 103 not running
ERROR: Backup of VM 103 failed - VM 103 not running
INFO: Starting Backup of VM 104 (qemu)
INFO: status = running
INFO: update VM 104: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-104-2015_04_11-03_51_16.vma.lzo'
INFO: started backup task '23844ea1-83b2-4426-8530-7a60fc6aac4c'
INFO: status: 0% (30408704/344671125504), sparse 0% (1036288), duration 3, 10/9 MB/s
ERROR: VM 104 not running
INFO: aborting backup job
ERROR: VM 104 not running
ERROR: Backup of VM 104 failed - VM 104 not running
INFO: Starting Backup of VM 105 (qemu)
INFO: status = running
INFO: update VM 105: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-105-2015_04_11-03_51_58.vma.lzo'
INFO: started backup task 'cf29506f-4a22-448f-a06d-1ec6c6c64d65'
INFO: status: 0% (22806528/431644213248), sparse 0% (73728), duration 3, 7/7 MB/s
ERROR: VM 105 not running
INFO: aborting backup job
ERROR: VM 105 not running
ERROR: Backup of VM 105 failed - VM 105 not running
INFO: Starting Backup of VM 106 (qemu)
INFO: status = running
INFO: update VM 106: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-106-2015_04_11-03_55_01.vma.lzo'
INFO: started backup task '3b7920b9-01b7-465b-91d2-a08521ce8369'
INFO: status: 0% (57016320/172872433664), sparse 0% (8511488), duration 3, 19/16 MB/s
INFO: status: 1% (1740898304/172872433664), sparse 0% (31887360), duration 122, 14/13 MB/s
vmid 103,104,105 runing when backup start..then just after vm die.. previous vms backup run ok and next vms too (u can see it on vm 106 log)
INFO: Starting Backup of VM 103 (qemu)
INFO: status = running
INFO: update VM 103: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-103-2015_04_11-03_50_56.vma.lzo'
INFO: started backup task '74b7fc76-0ffc-474a-b81a-f3ab414c3343'
INFO: status: 0% (45613056/322122547200), sparse 0% (167936), duration 3, 15/15 MB/s
ERROR: VM 103 not running
INFO: aborting backup job
ERROR: VM 103 not running
ERROR: Backup of VM 103 failed - VM 103 not running
INFO: Starting Backup of VM 104 (qemu)
INFO: status = running
INFO: update VM 104: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-104-2015_04_11-03_51_16.vma.lzo'
INFO: started backup task '23844ea1-83b2-4426-8530-7a60fc6aac4c'
INFO: status: 0% (30408704/344671125504), sparse 0% (1036288), duration 3, 10/9 MB/s
ERROR: VM 104 not running
INFO: aborting backup job
ERROR: VM 104 not running
ERROR: Backup of VM 104 failed - VM 104 not running
INFO: Starting Backup of VM 105 (qemu)
INFO: status = running
INFO: update VM 105: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-105-2015_04_11-03_51_58.vma.lzo'
INFO: started backup task 'cf29506f-4a22-448f-a06d-1ec6c6c64d65'
INFO: status: 0% (22806528/431644213248), sparse 0% (73728), duration 3, 7/7 MB/s
ERROR: VM 105 not running
INFO: aborting backup job
ERROR: VM 105 not running
ERROR: Backup of VM 105 failed - VM 105 not running
INFO: Starting Backup of VM 106 (qemu)
INFO: status = running
INFO: update VM 106: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/backup/vms/dump/vzdump-qemu-106-2015_04_11-03_55_01.vma.lzo'
INFO: started backup task '3b7920b9-01b7-465b-91d2-a08521ce8369'
INFO: status: 0% (57016320/172872433664), sparse 0% (8511488), duration 3, 19/16 MB/s
INFO: status: 1% (1740898304/172872433664), sparse 0% (31887360), duration 122, 14/13 MB/s
vmid 103,104,105 runing when backup start..then just after vm die.. previous vms backup run ok and next vms too (u can see it on vm 106 log)