ext2online difficulty

Jonathan Purcell jonathan.purcell at veritas.com
Fri Mar 4 17:26:05 UTC 2005

Hi all

I am having some trouble using the ext2online utility, I have reduced 
the problem down to its simplist form, and it goes soemthing like this:

Start with a regular msdos labelled disk (I have tried lvm volumes):

Command (m for help): p

Disk /dev/sdb: 18.3 GB, 18351967232 bytes
64 heads, 32 sectors/track, 17501 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       17501    17921008   83  Linux

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

Create an undersized filesystem ontop:

[root at blah ~]# mke2fs /dev/sdb1 1048576
mke2fs 1.35 (28-Feb-2004)
max_blocks 268435456, rsv_groups = 8192, rsv_gdb = 63
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
131072 inodes, 262144 blocks
13107 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=268435456
8 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
         32768, 98304, 163840, 229376

Writing inode tables: done
inode.i_blocks = 2528, i_size = 4243456
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 25 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
[root at blah ~]# mount /dev/sdb1 /mnt

Try an online resize:

[root at blah ~]# ext2online /dev/sdb1
ext2online v1.1.18 - 2001/03/18 for EXT2FS 0.5b
ext2online: ext2_ioctl: Inappropriate ioctl for device

ext2online: unable to resize /dev/sdb1

I am using RedHat AS4:
[root at blah ~]# uname -rsmpio
Linux 2.6.9-5.ELsmp x86_64 x86_64 x86_64 GNU/Linux
[root at blah ~]# rpm -qa | grep e2fs

Any help greatly appreciated.



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