After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

[nickyt44]

Hi All,

I hope someone can help me to fix my broken system.  I'm using Libranet 
2.8.1 (debian-based) with kernel 2.4.26. It's a dual-boot (grub 
bootloader) with Win XP.  I'm pretty sure I know what happened and why, 
I just don't know how to resolve it.

I installed quotacheck, after googling and reading a popular sys admin 
book, on my system.  It never worked.  I started doing additional 
research on why it wasn't working and after a couple of days, my system 
refused to boot.  During the boot sequence it complained about 
`reiserfs_getopt:  unknown option "usrquota"`.  Of course, I'd edited my 
/etc/fstab directory to explicitly include that option as follows:
#<device>   <mount point>   <type>      <options>            <dump>   <pass>
/dev/hde2            /               reiserfs       defaults,usrquota     0               1    


Now that the `usrquota` option is choking my system, I want to edit it 
out...but I can't because the root (/) filesystem will only mount 
read-only.  Which brings me to the crux of the matter:  if I can't 
re-edit the /etc/fstab file to eliminate the offending option, and I 
can't force reiserfs to mount properly as a read-write root filesystem, 
how do I recover my system? 

I've been googling for the last 2 weeks and have found a variety of 
combinations of the `mount` command, none of them works.  I've tried 
`mount / -o remount,rw` `mount -o remount,rw /dev/hde2`  `mount 
/dev/hde2 -t reiserfs remount,rw` and `mount -n -o remount,rw /`...all 
to no avail.  I invariably get the following message:  
`reiserfs_getopt:  unknown option "usrquota"
mount:  / not mounted already or bad option`.  I've tried using a 
knoppix live cd to edit the /etc/fstab directory, but the /etc/fstab 
shown when I cd to /etc/fstab is one created by knoppix and not the 
/etc/fstab on my root /dev/hde2.

How do I force reiserfs to mount read-write in order to edit the 
/etc/fstab file?  Although I have a recent backup of my Libranet system, 
I'm hoping not to do a reinstall.  TIA.
Nick

Re: After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

[James Courtier-Dutton]

nickyt44@optonline.net wrote:
> Hi All,
> 
> I hope someone can help me to fix my broken system.  I'm using Libranet 
> 2.8.1 (debian-based) with kernel 2.4.26. It's a dual-boot (grub 
> bootloader) with Win XP.  I'm pretty sure I know what happened and why, 
> I just don't know how to resolve it.
> 
> I installed quotacheck, after googling and reading a popular sys admin 
> book, on my system.  It never worked.  I started doing additional 
> research on why it wasn't working and after a couple of days, my system 
> refused to boot.  During the boot sequence it complained about 
> `reiserfs_getopt:  unknown option "usrquota"`.  Of course, I'd edited my 
> /etc/fstab directory to explicitly include that option as follows:
> #<device>   <mount point>   <type>      <options>            <dump>   <pass>
> /dev/hde2            /               reiserfs       defaults,usrquota     0               1    
> 
> 
> Now that the `usrquota` option is choking my system, I want to edit it 
> out...but I can't because the root (/) filesystem will only mount 
> read-only.  Which brings me to the crux of the matter:  if I can't 
> re-edit the /etc/fstab file to eliminate the offending option, and I 
> can't force reiserfs to mount properly as a read-write root filesystem, 
> how do I recover my system? 
> 
> I've been googling for the last 2 weeks and have found a variety of 
> combinations of the `mount` command, none of them works.  I've tried 
> `mount / -o remount,rw` `mount -o remount,rw /dev/hde2`  `mount 
> /dev/hde2 -t reiserfs remount,rw` and `mount -n -o remount,rw /`...all 
> to no avail.  I invariably get the following message:  
> `reiserfs_getopt:  unknown option "usrquota"
> mount:  / not mounted already or bad option`.  I've tried using a 
> knoppix live cd to edit the /etc/fstab directory, but the /etc/fstab 
> shown when I cd to /etc/fstab is one created by knoppix and not the 
> /etc/fstab on my root /dev/hde2.
> 
> How do I force reiserfs to mount read-write in order to edit the 
> /etc/fstab file?  Although I have a recent backup of my Libranet system, 
> I'm hoping not to do a reinstall.  TIA.
> Nick
> 
> 
> 

boot from the knoppix live cd.
Then mount your problem root partition on /mnt
cd /mnt/etc
edit /mnt/etc/fstab, save, then reboot.

Re: After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

[Bernd Schubert]

On Tuesday 17 August 2004 02:12, nickyt44@optonline.net wrote:
> Hi All,
>
> I hope someone can help me to fix my broken system.  I'm using Libranet
> 2.8.1 (debian-based) with kernel 2.4.26. It's a dual-boot (grub

You probably didn't apply Chris' patches, they are required for quota support 
in 2.4.X

ftp://ftp.suse.com/pub/people/mason/patches/data-logging/2.4.25/

(they also apply to 2.4.{26,27}

> bootloader) with Win XP.  I'm pretty sure I know what happened and why,
> I just don't know how to resolve it.
>
>
> Now that the `usrquota` option is choking my system, I want to edit it
> out...but I can't because the root (/) filesystem will only mount
> read-only.  Which brings me to the crux of the matter:  if I can't
> re-edit the /etc/fstab file to eliminate the offending option, and I
> can't force reiserfs to mount properly as a read-write root filesystem,
> how do I recover my system?
>
> mount:  / not mounted already or bad option`.  I've tried using a
> knoppix live cd to edit the /etc/fstab directory, but the /etc/fstab
> shown when I cd to /etc/fstab is one created by knoppix and not the
> /etc/fstab on my root /dev/hde2.

This would work, you should make familiar yourself with "chroot", read the 
manpage! E.g. from knoppix:

mount /dev/hde2 /mnt/hde2
chroot /mnt/hde2
vi /etc/fstab
exit
reboot

>
> How do I force reiserfs to mount read-write in order to edit the
> /etc/fstab file?  Although I have a recent backup of my Libranet system,
> I'm hoping not to do a reinstall.  TIA.

There are a dozens other ways for doing this, e.g. issuing as kernel parameter
"init=/bin/bash rw"

Then after booting:
vi /etc/fstab
sync; sync;  sync
reboot     
(This command (reboot) will probably fail, so you will have to press the reset 
button ;) )


Cheers,
 Bernd

Re: After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

[daniel.poelzleithner]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Bernd Schubert wrote:

| There are a dozens other ways for doing this, e.g. issuing as kernel
parameter
| "init=/bin/bash rw"
|
| Then after booting:
| vi /etc/fstab
| sync; sync;  sync

mount / -o remount,ro

Then you can savely press the reboot button.

regards
~ Daniel

- --
Once the philosopher stone has fallen from the tree,
~  nonsense appeared to fix the courious fear.

.. . .. ... . . .. . ... . .. . ... . . .
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Re: After `quotacheck` ReiserFS Root Filesystem Won't Mount Read-Write

[Raymond A. Meijer]

On Fri 20 August 2004 04:28, daniel.poelzleithner wrote:

> | "init=/bin/bash rw"
> |
> | Then after booting:
> | vi /etc/fstab
> | sync; sync;  sync

> mount / -o remount,ro
>
> Then you can savely press the reboot button.

Or use the Magic Sys Rq key:

e -> TeRM signal to all processes
i -> KiLL signal to all processes
s -> Sync
u -> Umount filesystems
b -> reBoot

Works for me :)


Ray