[mythtvnz] Storage drive won't mount

[Stephen Worthington]

On Mon, 22 Apr 2013 20:40:14 +1200, you wrote:

>
>I had a power cut here about an hour ago and when the system rebooted I  
>got a message: problem mounting /var/lib/mythtv
>I have /var/lib/mythtv on a 1TB drive.And the OS on a 160 GB drive.
>The drive is ok according to the disk utility.SMART data is good ran  
>benchmark sucessfully.
>sudo mount /dev/sdb1 /var/lib/mythtv gives a wrong fs error.fstab looks  
>fine.
>
>Any suggestions what to do?
>Or how to temporarily revert to /var/lib mythtv on sda1?
>I tried sudo umount /var/lib/mythtv but it tells me /var/lib/mythtv is not  
>mounted   -of course.
>Actually I think it has reverted by itself because it is recording to some  
>directory.
>Any ideas how to get my 1TB drive mounting again?
>
>Paul

I have seen that error on JFS partitions when the partition was dirty
and needed the journal to be re-run against it after a crash.  It
should be fixed if you run:

  fsck -C -f /dev/sdb1

The -C just gets it to tell you what it is doing so you can see how
long you are going to have to wait.  The -f forces a full check of the
partition.

Since I am paranoid about corrupted filesystems, whenever I have a
power failure or crash like yours, I always reboot into the repair
boot option - I forget what it is called exactly, but it is the next
line down in the Grub menu below the usual boot.  It boots in single
user mode, and provides a list of options for repairing things.  I
select the fsck one and let it run fsck on all partitions.  Then I
feel safe to reboot normally.