Results 1 to 8 of 8

Thread: Backup recovery speed

  1. #1
    Join Date
    Mar 2016
    Posts
    8

    Default Backup recovery speed

    Hello

    I have backup on disk, I have set my tape size to 10TB to avoid problems

    When the first backup is done it's generates a big file of 2TB of the full backup 00001.srv-test-01._rep_grp.0
    The incremental is small like 300M

    The problem is that to recovery any file looks like amanda read the entire full dump, this takes hours because it is a 2TB file

    I want to speed up the recovery process

    If I create a tape size smaller that forces amanda to create various small parts of the full backup will amanda jump over directly to the part that has the file or it will read all the files the same way?

    Is there any way to speed up the process?

    Thanks

  2. #2
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,025

    Default

    The only way to do it in amanda-3.3 and earlier is to split the dle in multiple smaller dles.

    but amanda-3.4 with the amgtar application do what you want, it only read the required data from tape.

  3. #3
    Join Date
    Mar 2016
    Posts
    8

    Default

    My amanda version is 3.3.7 but it has amgtar...

    I will test to see if it's works... thanks for the help.

  4. #4
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,025

    Default

    This feature is available only in amanda-3.4

  5. #5
    Join Date
    Mar 2016
    Posts
    8

    Default

    Hello

    I have upgraded amanda to 3.4 and have done a backup of 2TB using this settings, but amrecover still reads the entire 2TB only to restore a single file.

    Could you spot any problem in this configuration?

    Thanks

    Note: I use "compress none" because the destination is a dedupe engine.

    define application-tool app_amgtar {

    plugin "amgtar"
    property "VERBOSE" "YES"
    property "ATIME-PRESERVE" "YES"

    }


    define dumptype amgtar_app_dtyp {

    auth "ssh"
    index true
    ssh_keys "/etc/amanda/keys/ssh-key"
    maxpromoteday 1
    program "APPLICATION"
    application "app_amgtar"
    compress none
    }


    Disklist example:

    srv-backup-06.xxx.xx.xx /dir amgtar_app_dtyp

  6. #6
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,025

    Default

    Do the backup was done with a 3.4 client and server?
    Post the amrecover.*.debug and the amidxtaped.*.debug files

  7. #7
    Join Date
    Mar 2016
    Posts
    8

    Default

    The client version is 3.3.7 (amanda-backup-client_3.3.7-1Ubuntu1204_amd64.deb)

    This is the log file
    https://expirebox.com/download/7e73deee23d6994c85253dc2604bfefd.html

    Thanks

  8. #8
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,025

    Default

    The backup must have be done with a 3.4 client and server.
    The restore must be done with a 3.4 client and server.

    I already said that feature is available only with 3.4
    Stop trying with 3.3.7, it will never works

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •