Snapshots of VMs with multiple hard disks without suspending.

Discussion in 'Proxmox VE: Installation and configuration' started by joelserrano, Apr 10, 2012.

  1. joelserrano

    joelserrano Member

    Joined:
    Mar 16, 2011
    Messages:
    33
    Likes Received:
    0
    Hi,

    I'm planning to create a backup job to take daily snapshots of all VMs (we have KVM only).

    Most of our VMs have 2 hard disks. I've read: http://forum.proxmox.com/threads/2728-snapshot-mode-goes-to-suspend

    Is there no way to take snapshots of VMs with >1 hard disk without suspending? (I'm asking again cous Its been 3 years since that post, otherwise I'd have my answer already)

    What happens if the VMs has data being modified during the snapshot job? (Nothing found here: http://pve.proxmox.com/wiki/Backup_-_Restore_-_Live_Migration)

    Should snapshots backups go directly to a dedicated LVM volume or to the local drive? (Or NFS share, etc.)


    Thanks in advanced.

    Regards,
    Joel.
     
  2. udi

    udi Member

    Joined:
    Apr 1, 2011
    Messages:
    73
    Likes Received:
    0
    i think no because the two snapshots have to be made at the same time thatswhy the vm is suspended for less than a second.
     
  3. joelserrano

    joelserrano Member

    Joined:
    Mar 16, 2011
    Messages:
    33
    Likes Received:
    0
    I didn't know it was less than a second, I can afford that.

    Just to understand, when we talk about "snapshot/backup suspend" does It mean that the proxmox "stops" access to the VM, does the snapshot, and "enables" access again, or would it be the equivalent to when you suspend a Windows OS that It dumps ram to the hd and "powersoff" saving the state?

    Sorry If I'm not explaining myself to well.

    Regards,
    Joel.
     
  4. udi

    udi Member

    Joined:
    Apr 1, 2011
    Messages:
    73
    Likes Received:
    0
    suspend -> snapshot disk1 -> snapshot disk2 -> resume -> backup disk1 -> backup disk2
    i'm not a big ace but i think it only "freezes" the vm, it happens really fast.
     
  5. joelserrano

    joelserrano Member

    Joined:
    Mar 16, 2011
    Messages:
    33
    Likes Received:
    0
    Thank you udi.

    I'm going to try it out and let you know.


    Regards,
    Joel.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice