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Thread: Old backups are missing

  1. #1

    Default Old backups are missing

    Hi,
    I am backing up three hosts (four disks) from last one month. I am using S3 as a tape device. Today I detected that ...

    -- amanda is showing history for last 9 backups only and all previous backups are also removed from tape
    -- S3 bucket size reduced by considerable chunk; within a day it dropped by 25%.

    I have not performed any manual clean-up operation. I am clueless about what happened. Also clueless about why it retained last 9 backups? from where the number 9 came.

    Details of my deployment are as per below..

    VERSION="Amanda-3.3.4"

    dumpcycle 1week # the number of days in the normal dump cycle
    runspercycle 5 # the number of amdump runs in dumpcycle days
    tapecycle 10 # the number of tapes in rotation
    runtapes 1 # number of tapes to be used in a single run of amdump

    I seek your help in understanding this behaviour.

    Best Regards,

  2. #2
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,047

    Default

    From the tapecycle, you must increase it if you want to keep more backup.

  3. #3

    Default

    martineau,
    Thanks for the quick reply. But now I have many questions...

    how would my configuration look like if I want to discard my backups only after five years? Do i need to create those many disks in my tape changer. Today my tape changer looks like this as I use only 10 disks.

    define changer my_s3 {
    tpchanger "chg-multi:s3:<bucket-name>/DailSet1/slot-{01,02,03,04,05,06,07,08,09,10}" # Number of tapes in your "tapecycle"
    changerfile "s3-statefile"
    }
    Please share your experience.

    Best Regards,

  4. #4
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,047

    Default

    You need 1827 volumes:
    tpchanger "chg-multi:s3:<bucket-name>/DailSet1/slot-{01..1827}" # Number of tapes in your "tapecycle"

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