[mythtvnz] Storage drive won't mount

[Stephen Worthington]

On Tue, 23 Apr 2013 02:12:16 +1200, you wrote:

>On Mon, 22 Apr 2013 23:25:09 +1200, Stephen Worthington  
><stephen_agent at jsw.gen.nz> wrote:
>
>> 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.
>>
>
>Ok, that did not work, but I have more info,here's the messages I get
>when attempting to mount the drive and running fsck:
>
>myth at myth:~$ sudo mount /dev/sdb1 /var/lib/mythtv
>[sudo] password for myth:
>mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
>
>myth at myth:~$ fsck -C -f /dev/sdb1
>fsck from util-linux 2.20.1
>fsck: fsck.jfs: not found
>fsck: error 2 while executing fsck.jfs for /dev/sdb1
>myth at myth:~$
>
>Is this telling me that I need to install fsck.jfs or is it saying  
>something else?
>
>Paul

The jfsutils package is not installed by default (which I have always
thought was a very bad idea on a Mythbuntu install).  It includes the
fsck.jfs file that does fsck for JFS, so install it and try again.