Mark5 Knowledge base

    Version as of 19:43, 16 May 2024

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    Reconstructing a Mark5 user directory

    When the user directory on a module has been corrupted for whatever reason, there are two possible ways to recover it, using utilities included in "fuseMk5". Place the problematic module as the only module into a Mark5 unit. Then:

    If the module was previously imported into DiFX:

    mkdir tmp; cd tmp
    cp -a /cluster/difx/directories/<modulename>.dir .
    /cluster/mark5/fuseMk5/fuseMk5-cvs/difxdirfile2userdir.py  <modulename>.dir  newdir.bin
    /cluster/mark5/fuseMk5/fuseMk5-cvs/fuseMk5 --udread newdir.bin /mnt/diskpack
    ls /mnt/diskpack
    # If files under /mnt/diskpack looked reasonable you can write newdir.bin onto module:
    fusermount -u /mnt/diskpack
    /cluster/mark5/fuseMk5/fuseMk5-cvs/writeuserdir newdir.bin
    
    If only a FieldSystem log file exists:
    mkdir tmp; cd tmp
    
    cp <fieldsystemlog>.log fslog.log
    (cat expt_part_2.log >> fslog.log)  # if there are multiple experiments on a module
    (cat expt_part_3.log >> fslog.log)  # ...
    
    /cluster/mark5/fuseMk5/fuseMk5-cvs/fslog2userdir.py <fieldsystemlog>.log newdir.dir
    
    /cluster/mark5/fuseMk5/fuseMk5-cvs/fuseMk5 --udread newdir.bin /mnt/diskpack
    ls /mnt/diskpack
    
    # If files under /mnt/diskpack looked reasonable you can write newdir.bin onto module:
    fusermount -u /mnt/diskpack
    /cluster/mark5/fuseMk5/fuseMk5-cvs/writeuserdir newdir.bin
    
     

    Mark5 Module recovery

     

    Upgrade SDK Version

    insert a module into slot A

    BEWARE: data on the module might become deleted, so make sure it contains no valid data !

    log-into the mark5 machine as user root, then execute:

    cd /usr/local/src/streamstor/linux/util/
    ./ssflash -u SDK9.3.ssf
    

    make sure no errors are reported during the flashing process

    run ssopen and sstest:

    ./ssinfo
    ./sstest
    

    make sure no errors are reported

    Update the sticker on the chassis of the mark5 to indicate the new version of SDK.