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Re: FSCK Maintenance - no root password



It does not appear to be in a LVM.  Mount just shows /dev/md0 on /home type
ext3 (rw) the fstab shows the same thing.

If I try to run e2fsck -cc or e2fsck -f I receive the same error message.

On Mon, Oct 13, 2008 at 3:31 PM, Andrey Meganov <a meganov gmail com> wrote:

> Raid and lvm devices dont needspecific services to run, just the device
> mapper drivers, which are loaded in the maintenance mode.
>
> BR,
> Andrey
>
> Sent from my iPhone as I am away from office
>
>
> On 13.10.2008, at 18:40, "Jason Brown" <ninjazjb gmail com> wrote:
>
>  Ok, didn't think about that sorry.
>>
>> On Mon, Oct 13, 2008 at 11:01 AM, Chet Nichols III
>> <chet nichols gmail com>wrote:
>>
>>  I know services dont run in maintenance mode, and that's why I'm asking.
>>> My
>>> thought was, without the md driver loaded, the OS isn't going to be able
>>> to
>>> understand how to work with /dev/md0, so you may need to load the driver
>>> first before fsck will be able to read the device.
>>>
>>> On Mon, Oct 13, 2008 at 10:46 AM, Jason Brown <ninjazjb gmail com>
>>> wrote:
>>>
>>>  I believe its LVM over RAID, but I will have to look and get back with
>>>>
>>> you.
>>>
>>>> When I created the RAID array, I assigned all the disks the software
>>>> RAID
>>>> and then created the RAID 5 during the installation.  I did not go
>>>>
>>> through
>>>
>>>> and split the partitions afterwards.
>>>>
>>>> When I run fsck I get this error...
>>>>
>>>> fsck.ext3: Invalid argument while trying to open /dev/md0
>>>> /dev/md0:
>>>> The superblock could not be read or does not describe a correct ext2
>>>> filesystem. If the device is valid and it really contains an ext2
>>>> filesystem (and not swap or ufs or something else), then the superblock
>>>> is corrupt, and you might try running e2fsck with an alternative
>>>> superblock:
>>>>  e2fsck -b 8193 <device>
>>>>
>>>> I then try e2fsck -b 8193 /dev/md0 and get the same error message.
>>>>
>>>>
>>>>
>>>> On Mon, Oct 13, 2008 at 10:38 AM, Jason Brown <ninjazjb gmail com>
>>>>
>>> wrote:
>>>
>>>>
>>>>
>>>>>  I don't use software RAID, but I would probably want to do this in
>>>>>>
>>>>> rescue
>>>>
>>>>> mode off of disc 1.  What RAID level are you using?
>>>>> 5.
>>>>>
>>>>>
>>>>>  I know this is a silly question, but is the md driver loaded and are
>>>>>>
>>>>> the
>>>
>>>> md
>>>>> services running?
>>>>>
>>>>> Services are not loaded when in maintenance mode.  The server does not
>>>>>
>>>> even
>>>>
>>>>> mount the file systems because you cannot run FSCK on a mounted device.
>>>>>
>>>>>
>>>>>
>>>>> On Mon, Oct 13, 2008 at 9:39 AM, Chet Nichols III <
>>>>>
>>>> chet nichols gmail com>wrote:
>>>>
>>>>>
>>>>>  I know this is a silly question, but is the md driver loaded and are
>>>>>>
>>>>> the
>>>
>>>> md
>>>>>> services running?
>>>>>> Chet
>>>>>>
>>>>>> On Mon, Oct 13, 2008 at 9:15 AM, Barry Brimer <lists brimer org>
>>>>>>
>>>>> wrote:
>>>
>>>>
>>>>>>  I don't use software RAID, but I would probably want to do this in
>>>>>>>
>>>>>> rescue
>>>>>>
>>>>>>> mode off of disc 1.  What RAID level are you using?
>>>>>>>
>>>>>>>
>>>>>>> On Mon, 13 Oct 2008, Jason Brown wrote:
>>>>>>>
>>>>>>> When I tried booting it into single user mode the server would
>>>>>>>
>>>>>> still
>>>
>>>> go
>>>>
>>>>> to
>>>>>>
>>>>>>> maintenance mode.  I was able to get at it another way by  passing
>>>>>>>> "init=/bin/bash" which got me to a command prompt.  Then remounted
>>>>>>>>
>>>>>>> the
>>>>
>>>>> drive
>>>>>>>> with rw since it was in ro mode, and then changed the password.
>>>>>>>>
>>>>>>> Now
>>>
>>>> I
>>>>
>>>>> have
>>>>>>>> it in maintenance mode again, I just need to figure out how to do
>>>>>>>>
>>>>>>> an
>>>
>>>> fsck
>>>>>>
>>>>>>> on
>>>>>>>> a raid system.  When I try fsck /dev/md0 I got a bad super block
>>>>>>>>
>>>>>>> error
>>>>
>>>>> and
>>>>>>
>>>>>>> to run e2fsck -b 8192 which gives me the same error message.
>>>>>>>> Any ideas would be appreciated.
>>>>>>>> Thanks.
>>>>>>>>
>>>>>>>> On Sun, Oct 12, 2008 at 10:57 PM, Barry Brimer <lists brimer org>
>>>>>>>>
>>>>>>> wrote:
>>>>>>
>>>>>>>
>>>>>>>> My file server locked up and I had to reboot it, when it came up
>>>>>>>>
>>>>>>> its
>>>
>>>> stuck
>>>>>>>>>
>>>>>>>>>  in the FSCK maintenance.  Is there a way that I can run this
>>>>>>>>>>
>>>>>>>>> without
>>>>
>>>>> a
>>>>>>
>>>>>>> root
>>>>>>>>>> password or reset the password?  The file system is an ext3 in a
>>>>>>>>>>
>>>>>>>>> raid
>>>>
>>>>> 5
>>>>>>
>>>>>>> configuration.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>  I would be very cautious about interrupting an fsck.  If you
>>>>>>>>>
>>>>>>>> reboot
>>>
>>>> your
>>>>>>
>>>>>>> machine and press a key to bring up the grub menu, then type 'e'
>>>>>>>>>
>>>>>>>> to
>>>
>>>> edit
>>>>>>
>>>>>>> that kernel entry, move to the kernel line, hit 'a' to append ..
>>>>>>>>>
>>>>>>>> place
>>>>
>>>>> an
>>>>>>
>>>>>>> 's' at the end of the line and hit enter and then 'b' to boot you
>>>>>>>>>
>>>>>>>> will
>>>>
>>>>> boot
>>>>>>>>> without the root password into single user mode.
>>>>>>>>>
>>>>>>>>> Barry
>>>>>>>>>
>>>>>>>>> --
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>>>>>>>>>
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>>>>
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>>>>>>
>>>>>>
>>>>>> --
>>>>>> ----------------------------------------
>>>>>> chet nichols III
>>>>>> chet nichols gmail com
>>>>>> aim: chet / twitter: chet
>>>>>> http://chetnichols.org
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>>>
>>>
>>> --
>>> ----------------------------------------
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>>> http://chetnichols.org
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