FSCK Maintenance - no root password

[Jason Brown]

Ok, didn't think about that sorry.

On Mon, Oct 13, 2008 at 11:01 AM, Chet Nichols III
<chet.nichols at 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 at 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 at 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 at 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 at 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 at 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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> > >> --
> > >> ----------------------------------------
> > >> chet nichols III
> > >> chet.nichols at gmail.com
> > >> aim: chet / twitter: chet
> > >> http://chetnichols.org
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> --
> ----------------------------------------
> chet nichols III
> chet.nichols at gmail.com
> aim: chet / twitter: chet
> http://chetnichols.org
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