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htorque
Asked: 2011-02-14 07:37:04 +0800 CST

How do I find out if there will be a fsck during the next boot?

  • 772

Is there a way to find out if a filesystem check is scheduled for the next boot?

Maybe it's similar to a forced check, which gets triggered by the existence of the file /forcefsck?

fsck

4 Answers

  1. Best Answer

    It depends on your filesystem, in addition to /forcefsck .

    With ext2, ext3 and ext4 you can use 

    dumpe2fs -h /dev/diskname

    Where diskname is for example sda1. You can determine name of your disk partition by running command

    mount

    Example output (only partly):

    /dev/xvda1 on / type ext3 (rw,noatime,usrquota,errors=remount-ro)

    Where xvda1 is name of root disk partition.

    For dumpe2fs three interesting items are

    Mount count:              9
Maximum mount count:      36
Next check after:         Mon Feb 14 09:31:33 2011

    Ubuntu will run fsck if mount count is equal or greater than maximum mount count, or if "next check after" is passed.

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  2. Starting in Ubuntu 11.04, this information will be shown in your /etc/motd file, using the tool /usr/lib/update-notifier/update-motd-fsck-at-reboot, which checks ext2/3/4 partitions for both date-based and count-based auto-fsck events. You can run it manually like this:

    sudo /usr/lib/update-notifier/update-motd-fsck-at-reboot --force

    and it will report any partitions that will be checked on the next reboot.

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  3. There's a utility called showfsck that will tell you how many mounts are left until the next scheduled fsck.

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  4. If you have an ext4 partition you can see how many times it has been mounted:

    sudo dumpe2fs -h /dev/sda1 | grep Mount
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