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Replacement of CPU causing mount errors

HappymanUK
Since a failed CPU was replaced in my server I've been getting the following error message (notification by e-mail each day). Output from your job 869 repquota: Cannot stat() mounted device /dev/root: No such file or directory repquota: Cannot stat() mounted device /dev/root: No such file or directory Any idea what this means and why replacing a component would cause this message and why the replacement of a CPU would cause it ?? # /scripts/fixquotas Installing Default Quota Databases......Done journaled quota support: kernel supports, user space tools supports (available) checking out /backup checking out /backup Warning : Your system does not have a separate filesystem for backups. This may cause performance degradation during the backup process. /dev/md2 (already configured quotas = 1). /dev/md3 (already configured quotas = 1). Updating Quota Files...... quotacheck: Cannot stat() mounted device /dev/root: No such file or directory quotacheck: Cannot stat() mounted device /dev/root: No such file or directory quotacheck: Scanning /dev/md3 # quotacheck -a quotacheck: Cannot stat() mounted device /dev/root: No such file or directory quotacheck: Cannot stat() mounted device /dev/root: No such file or directory # tail /etc/fstab # /dev/md2 / ext3 errors=remount-ro,usrjquota=quota.user,jqfmt=vfsv0 0 1 /dev/md3 /home ext3 usrjquota=quota.user,jqfmt=vfsv0 1 2 /dev/sda4 swap swap defaults 0 0 /dev/sdb4 swap swap defaults 0 0 proc /proc proc defaults 0 0 sysfs /sys sysfs defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts defaults 0 0

Comments

16 comments

Date Votes
  • twhiting9275
    what's the output from the following command
    cat /etc/mtab
    You'll need to run that inside of SSH edit: missed that fstab was already posted, just need mtab ;)
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  • HappymanUK
    what's the output from the following command
    cat /etc/mtab

    Thank you for replying. Here is the results from the mtab:
    # cat /etc/mtab rootfs / rootfs rw 0 0 /dev/root / ext3 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=writeback,jqfmt=vfsv0,usrjquota=quota.user 0 0 devtmpfs /dev devtmpfs rw,relatime,size=16419704k,nr_inodes=4104926,mode=755 0 0 none /proc proc rw,relatime 0 0 none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 devpts /dev/pts devpts rw,relatime,mode=600 0 0 /dev/md3 /home ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=writeback,jqfmt=vfsv0,usrjquota=quota.user 0 0 tmpfs /dev/shm tmpfs rw,relatime 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0 /dev/root /var/tmp ext3 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=writeback,jqfmt=vfsv0,usrjquota=quota.user 0 0
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  • twhiting9275
    /dev/root / ext3 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=writeback,jqfmt=vfsv0,usrjquota=quota.user 0 0

    There's the bugger right there edit /etc/mtab, remove that, reboot and you should be home free
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  • HappymanUK
    Thanks for the reply. I will give that a try later when I am in a position to reboot. Also, I had tried linking to "/dev/xvda" using the command: ln -s /dev/xvda /dev/root How would I reverse this change I made ? Any idea why the replacement of a CPU would cause that ? Thanks in advance
    0
  • HappymanUK
    It won't let me save the changes after doing a pico -w on that file and removing that line - not sure why. Any ideas ?
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  • twhiting9275
    what's the output of lsattr /etc/mtab are you trying to edit this as root?
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  • HappymanUK
    what's the output of lsattr /etc/mtab are you trying to edit this as root?

    I get the following. Yes, I'm trying to edit it as root: root@server [~]# lsattr /etc/mtab lsattr: Operation not supported While reading flags on /etc/mtab
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  • twhiting9275
    and ls -la /etc/mtab? It shouldn't be a symlink, but this might be the answer. If it is, that needs to be fixed
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  • HappymanUK
    and ls -la /etc/mtab? It shouldn't be a symlink, but this might be the answer. If it is, that needs to be fixed

    lrwxrwxrwx 1 root root 12 Mar 22 2014 /etc/mtab -> /proc/mounts
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  • twhiting9275
    So edit /proc/mounts and remove the line mentioned earlier.
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  • twhiting9275
    you really should be having your server admin do this, not relying on forum help.
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  • HappymanUK
    So edit /proc/mounts and remove the line mentioned earlier.

    Unable to save changes again. When I try to save the file after the changes I get the message "Error writing /proc/mounts: Invalid argument" from pico.
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  • twhiting9275
    You're getting into dangerous territory here. Contact your systems admin. Seriously, you need to find one to do this.
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  • cPanelMichael
    Hello, I suggest reporting this issue to your data center or a qualified system administrator so they can take a closer look. Manipulating your partitions is not recommended if you have no experience with those configuration files. There's a similar thread at: /dev/root missing Thank you.
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  • HappymanUK
    Thanks for the replies. Can anyone work out how replacing a hardware component could have caused this though ?
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  • cPanelMichael
    Can anyone work out how replacing a hardware component could have caused this though ?

    This question is better asked to a qualified system administrator or your hosting provider/data center, as it's not a common occurrence I've seen happen before in relation to the cPanel software. Thank you.
    0

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