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Attempting to unmount /backup drive crashes server.

Discussion in 'General Discussion' started by jols, Dec 21, 2007.

  1. jols

    jols Well-Known Member

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    Anyone ever heard of this one:

    When the cpbackup routines attempts to umount the backup drive, the server goes into some kind of CPU runaway and then crashes:
    -----------
    top - 01:16:44 up 23:50, 1 user, load average: 83.40, 57.89, 28.13
    Tasks: 221 total, 7 running, 214 sleeping, 0 stopped, 0 zombie
    Cpu0 : 0.0%us, 0.0%sy, 0.0%ni, 0.0%id,100.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu1 : 0.0%us,100.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu2 : 0.0%us, 0.5%sy, 0.0%ni, 0.0%id, 99.5%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu3 : 0.0%us, 0.0%sy, 0.0%ni, 0.0%id,100.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Mem: 2074148k total, 1962620k used, 111528k free, 198340k buffers
    Swap: 2040212k total, 0k used, 2040212k free, 990440k cached

    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    2268 root 36 19 2192 644 536 R 100 0.0 12:57.58 umount /backup

    -----------

    mtab looks like this:

    /dev/sda5 / ext3 rw,usrquota 0 0
    proc /proc proc rw 0 0
    sysfs /sys sysfs rw 0 0
    devpts /dev/pts devpts rw,gid=5,mode=620 0 0
    /dev/sdb1 /backup ext3 rw 0 0
    /dev/sda1 /boot ext3 rw 0 0
    tmpfs /dev/shm tmpfs rw,noexec,nosuid 0 0
    /dev/sda8 /home ext3 rw,usrquota 0 0
    /dev/sda6 /tmp ext3 rw,noexec,nosuid 0 0
    /dev/sda3 /usr ext3 rw,usrquota 0 0
    /dev/sda2 /var ext3 rw,usrquota 0 0
    none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
    /tmp /tmp none rw,noexec,nosuid,bind 0 0


    fstab looks like this:

    LABEL=/ / ext3 defaults,usrquota 1 1
    LABEL=/backup /backup ext3 defaults 1 2
    LABEL=/boot1 /boot ext3 defaults 1 2
    devpts /dev/pts devpts gid=5,mode=620 0 0
    tmpfs /dev/shm tmpfs defaults,noexec,nosuid 0 0
    LABEL=/home /home ext3 defaults,usrquota 1 2
    proc /proc proc defaults 0 0
    sysfs /sys sysfs defaults 0 0
    LABEL=/tmp /tmp ext3 defaults,noexec,nosuid 1 2
    LABEL=/usr /usr ext3 defaults,usrquota 1 2
    LABEL=/var /var ext3 defaults,usrquota 1 2
    LABEL=SWAP-sda7 swap swap defaults 0 0


    And here's the df result:

    Filesystem 1K-blocks Used Available Use% Mounted on
    /dev/sda5 8123168 393920 7309956 6% /
    /dev/sdb1 378473076 9409988 349527648 3% /backup
    /dev/sda1 124427 15256 102747 13% /boot
    tmpfs 1037072 0 1037072 0% /dev/shm
    /dev/sda8 206970004 16014836 180271948 9% /home
    /dev/sda6 1019208 38932 927668 5% /tmp
    /dev/sda3 8123200 3612156 4091748 47% /usr
    /dev/sda2 10154020 734380 8895520 8% /var



    Does anyone see anything wrong here?

    Thanks very much for anything.
     
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