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Re: FSCK Maintenance - no root password



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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-- 
----------------------------------------
chet nichols III
chet nichols gmail com
aim: chet / twitter: chet
http://chetnichols.org
----------------------------------------


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