Takes long to import 90GB of Zimbra Datastore
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Thread: Takes long to import 90GB of Zimbra Datastore

  1. #1
    Active Member
    Join Date
    Dec 2014

    Takes long to import 90GB of Zimbra Datastore


    I'm migrating zimbra 7 to zimbra 8.5.1 from physical to a virtual server. I think this is really not normal that 90GB of datastore will take 3 days and still on going. This is what happened mailboxd accidentally restarted during the migration process and I restarted the process again using the zxbackup migration wizard I'm not sure if I did the correct way. Please see the some monitoring logs below.

    avg-cpu: %user %nice %system %iowait %steal %idle
    2.63 0.06 4.07 0.25 0.00 92.99

    Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await svctm %util
    sdb 0.00 3335.00 2.00 124.00 0.01 13.51 219.75 0.26 2.10 0.47 5.90
    sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
    dm-0 0.00 0.00 2.00 3459.00 0.01 13.51 8.00 14.20 4.10 0.02 5.90

    Operation log path: /opt/zimbra/log/zextras_ZxBackup_ExternalRestore_cd0094df-e8de-4591-9d85-3dc4d1a0b29a.log
    Warnings/Errors: 0/1
    Restored Accounts(only attributes): 345/347
    Restored Accounts(common items): 320/347
    Restored Accounts(only shared & datasources): 0/347
    Current Account: admin@bigstone.ca
    Restored/Skipped Items: 91000/774609
    Unrestored Items: 2753

  2. #2
    CTO ZeXtras Employee d0s0n's Avatar
    Join Date
    Apr 2011
    Hi Erwin and welcome to our forums.

    As first thing, your performances depends by your specific environment, especially by your storage. I can suggest reading of our wiki article aboutIncremental migration where you can find many useful information about our migration best practices.

    Season Greetings.
    ZeXtras Website # ZeXtras Wiki # ZeXtras Store

    Head of ZeXtras System Administrators

  3. #3
    ZeXtras Community Manager ZeXtras Employee Cine's Avatar
    Join Date
    Apr 2011

    I'm glad to inform you that the next release of ZeXtras Suite will include an optimization to the "External Restore" operation made to improve import times by reducing the operation's overhead: in optimal cpu/storage/memory conditions the improvement will be remarkable, but it should be noticeable even in sub-par situations (e.g. low I/O trhoughput or not enough iops).

    Keep an eye on the "News and announcements" section for more info about the release of ZeXtras Suite 2.0!

    Have a nice day,
    the ZeXtras Team

    (This is a bulk update to several similar threads, but don't hesitate to reply!)


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