[linux-lvm] resize reiserfs

[linux-lvm] resize reiserfs

[Ulrich Wiederhold]

Hi,
I need to resize my lv /dev/store/data now.

I already added the 2nd HD (/dev/hdc1) to the vg store using vgextend
and extended the lv using lvextend.

Now I need to extend the reiserfs I got on this lv. I seached the web
and found the resize_reiserfs perl-script, but if I try it, I only get
this msg:
$#: ./resize_reiserfs --size +50G --lv /dev/store/data --dry-run          

  only 0 free PE's (0 K) left on VG store

Sure, I already added the PE´s to the lv.
What to do?

Uli

-- 
'The box said, 'Requires Windows 95 or better', so i installed Linux - TKK 5

Re: [linux-lvm] resize reiserfs

[Patrick Boutilier]

Why not just use the resize_reiserfs program from the reiserfsprogs 
package available from 
ftp://ftp.namesys.com/pub/reiserfsprogs/reiserfsprogs-3.x.0j.tar.gz   ?

Snip from manpage:


NAME
       resize_reiserfs - Reiserfs filesystem resizer

SYNOPSIS
       resize_reiserfs [ -s [+|-]size[K|M|G] ] [ -fqv ] device

DESCRIPTION
       The resize_reiserfs tool resizes an unmounted reiserfs file 
system.  It enlarges or shrinks an reiserfs file system located on a 
device so that it will have size bytes or size=old_size +(-) size
       bytes if the + or - prefix is used.  If the -s option is not 
specified, the filesystem will be resized to fill the given device.  The 
size parameter may have one of the optional modifiers K,  M,
       G, which means the size parameter is given in kilo-, mega-, 
gigabytes respectively.

       The  resize_reiserfs  program  does  not manipulate the size of 
the device. If you wish to enlarge a filesystem, you must make sure you 
expand the underlying device first. This can be done using
       cfdisk(8) for partitions, by deleting the partition and 
recreating it with a larger size (assuming there is free space after the 
partition in question).  Make sure you re-create it with the same
       starting disk cylinder as before!  Otherwise, the resize 
operation will certainly not work, and you may lose your entire filesystem.

       The resize_reiserfs program allows to grow a reiserfs on-line if 
there is a free space on block device.

       If  you  wish  to  shrink an reiserfs partition, first use 
resize_reiserfs to shrink the file system. You may then use cfdisk(8) to 
shrink the device. When shrinking the size of the device, make
       sure you do not make it smaller than the reduced size of the 
reiserfs filesystem.



Ulrich Wiederhold wrote:

>Hi,
>I need to resize my lv /dev/store/data now.
>
>I already added the 2nd HD (/dev/hdc1) to the vg store using vgextend
>and extended the lv using lvextend.
>
>Now I need to extend the reiserfs I got on this lv. I seached the web
>and found the resize_reiserfs perl-script, but if I try it, I only get
>this msg:
>$#: ./resize_reiserfs --size +50G --lv /dev/store/data --dry-run          
>
>  only 0 free PE's (0 K) left on VG store
>
>Sure, I already added the PE�s to the lv.
>What to do?
>
>Uli
>

Re: [linux-lvm] resize reiserfs

[Andreas Dilger]

On Nov 22, 2001  20:30 +0100, Ulrich Wiederhold wrote:
> I already added the 2nd HD (/dev/hdc1) to the vg store using vgextend
> and extended the lv using lvextend.
> 
> Now I need to extend the reiserfs I got on this lv. I seached the web
> and found the resize_reiserfs perl-script, but if I try it, I only get
> this msg:
> $#: ./resize_reiserfs --size +50G --lv /dev/store/data --dry-run          
> 
>   only 0 free PE's (0 K) left on VG store

It looks like the resize_reiserfs script is trying to do LVM operations
internally, and then doing the resize afterwards.  However, this is
terribly confusing, because the resize_reiserfs _program_ has the same
name.  You should get resize_reiserfs with the other reiserfs tools,
but I'm not sure whether it is compiled and installed by default.

I would suggest just reducing the LV to the original size, or not using
a relative size but an absolute size (so it doesn't try to grow the
LV), and continue to use the script.

Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/

Re: [linux-lvm] resize reiserfs

[Alex Zarochentsev]

hello !

> Hi,
> I need to resize my lv /dev/store/data now.
> 
> I already added the 2nd HD (/dev/hdc1) to the vg store using vgextend
> and extended the lv using lvextend.
> 
> Now I need to extend the reiserfs I got on this lv. I seached the web
> and found the resize_reiserfs perl-script, but if I try it, I only get
> this msg:
> $#: ./resize_reiserfs --size +50G --lv /dev/store/data --dry-run          
> 
>   only 0 free PE's (0 K) left on VG store
> 
> Sure, I already added the PE?s to the lv.
> What to do?

seems perl script tries extend lv again.

use resize_reiserfs from reiserfsprogs (3.x.0j or better) package,
just type 
	resize_reiserfs /dev/store/data

it detects block device size and expands the file system as needed.

--
Alex.