[CentOS] mount: /dev/sdb1 already mounted or /blah busy
James Pearson
james-p at moving-picture.com
Wed Apr 23 09:43:13 UTC 2008
Al Sparks wrote:
> How do I go about troubeshooting this? I'm using RHEL 4 update 6.
>
> mount: /dev/sdb1 already mounted or /blah busy
>
> It's actually an iSCSI LUN (NetApp filer). I successfully configured (ext3) and mounted it, but when I rebooted, the /dev/sdb1 device/partition is seen by the kernel and it shows up with "fdisk -l".
>
> Nevertheless I get that error. I've tried "umount" and am informed that /blah isn't mounted. I've tried "lsof" and don't find a process that's attached to /blah.
>
> I also tried "fsck -t ext3 /dev/sdb1" which worked (so it detects the ext3 file system).
>
> Any other tools to check out?
Do you have an entry for /dev/sdb1 in /etc/mtab ? If so, try manually
removing that line and try the mount again.
James Pearson
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