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  • in reply to: XSan crashing randomly, can’t cvfsck #376422
    garges
    Participant

    Yes we do have a backup meta data controller.

    Since this was posted we’ve narrowed things down a bit. Got cvfsck to run, output checked by Apple engineer and looks fine. Upgraded all systems to 10.5.7. Determined that crashes happen during backups and only when the Intel box is doing backup of one of the XSan volumes. G4s can do the XSan backup just fine.

    Usually now the MDC crashes and the backup MDC takes over about 15 minutes after backups start. Then the next night the secondary MDC crashes and the primary one takes over. So we ping pong back and forth every night.

    Some nights the crash is worse and takes down the entire SAN, forcing a manual reboot.

    We turned on a logging option in the backup program (Bacula). That slowed down backups a lot, 45 minutes up to 3 hours. And crashes are less frequent, couple times a week instead of every night.

    in reply to: Xsan Quotas by script #375119
    garges
    Participant

    Use the shell “for loop” to repeatedly execute the cvadmin command for each user. Something like:

    for name in `cat FileOfUserNames`
    do
    cvadmin -F XSANVoumeName -e “quotas set user $name 21474836480 19327352832 10080”
    done

    This would take a file named FileOfUserNames which should be a plain text file with one username and nothing else on each line. It would loop for each line in the file setting that line to the variable “name.” Then it would call cvadmin to set the quota to 20Gb hard, 19Gb soft, one week warning.

    garges
    Participant

    Sorry it’s been so long since updating this.

    To answer MacTroll, the logs on the OD Master say:
    kadmin log:
    {date, time, od master hostname} kadmin.local[28591](info): No dictionary file specified, continuing without one.

    LDAP Log:
    {date, time, od master hostname}: <= bdb_substring_candidates: (mail) index_param failed (18)\n {date, time, od master hostname}: <= bdb_substring_candidates: (givenName) index_param failed (18)\n Password Service Server Log: {date, time} AUTH2: {0x00000000000000000000000000000001, diradmin} DIGEST-MD5 authentication succeeded. {date, time} QUIT: {0x00000000000000000000000000000001, diradmin} disconnected.

    in reply to: XSan volumes don’t mount #369131
    garges
    Participant

    Thanks for your suggestions, all good ones.

    No errors in system log.
    Yes I can see all the XServe RAID targets listed as XSan volumes in Disk First Aid (even on the machines that can’t connect.)
    I’ve got identical /etc/hosts files on each machine that lists them all.
    I’m running the XSan Admin app from the MDC
    Don’t see any differences in the XSan/config
    And it’s running 1.4.1

    I think it may be solved though. I was talking to QLogic support and they asked me if the fibre channel card has a heatsink. I looked and no it doesn’t. They said it must be a first generation card (it is a few years old) and there were problems with those getting too hot to function. Later cards added a heatsink.

    Then they suggested a workaround, that I thought was crazy but seems to have fixed things. Plug the old first gen cards into the highest numbered slots of the FC switch. They said the higher numbered ports are electrically different and are more tolerant of the malfunctions from over heated cards.

    So I did it and the SAN volume which I’d never been able to mount just mounted itself automatically. Several trial shut down reboot cycles later and it works fine.

    in reply to: Load balancing home dirs across multiple XServes #368224
    garges
    Participant

    [QUOTE][u]Quote by: MacTroll[/u][p]You’re either not using the Load Balancer correctly, or Xsan.

    All of the homes are on the same Xsan volume, in the same folder.

    All 4 Xserves are sharing the same Xsan home folder.

    The balancer then distributes load to all four. Ideally forward and reverse DNS for all the home servers are the same.[/p][/QUOTE]

    So how should the “Mac OSX Server/Share Point URL” be entered in Workgroup Manager?
    afp://LoadBalancerVIPDnsName.domain/XSanVolumeName/HomeFolder
    or
    afp://FileServerHostName.domain/XSanVolumeName/HomeFolder

    The first way doesn’t work at all for me. The second works 1/4 of the time.

Viewing 5 posts - 1 through 5 (of 5 total)