On Sun, 20 Feb 2005 16:17:54 +0800, Craig Mandsager
<[EMAIL PROTECTED]> wrote:
>
> Hi Carl,
>
> Checking if you were able to solve the resizing of the root
> filesystem on a Logical volume?
>
> Had you tried resize2fs âf
> To bypass safety checks?
I never actually managed to resize the root file system but I learned
a lot. Then I rebuilt the whole thing.
Some of the things I learned:
Knoppix does not seem to be able to cope with Logical Volumes, even
if booted with the 2.6 Kernel. Likewise, SystemRescue Cd is a
non-starter.
Fedora Core 3 Rescue disk has the necessary tools. I was able to boot
FC3 Rescue and tell it not to mount the LVs. Could then do:
# lvm
lvm> vgscan
finds "VolGroup00"
lvm> vgchange --available y VolGroup00
2 logical volumes now available
lvm> lvscan
ACTIVE /dev/VolGroup00/LogVol00
ACTIVE /dev/VolGroup00/LogVol01
lvm> ^C
here try to resize the file system
# resize2fs -p /dev/VolGroup00/LogVol00 8G
file system has unsupported features
I don't know what the "unsupported features" are. Maybe it means
ext3. I go through the exercise of changing the file system from ext3
to ext2, and learning how to make the system still bootable without a
panic. Meanwhile, I have found another candidate for resizing file
systems, it is named "ext2resize", and I compile it and link it
statically and store it on my USB external disk.
Back to booting FC3 Rescue
# resize2fs -p /dev/VolGroup00/LogVol00 8G
file system has unsupported features
OK, try the other program:
# mount /dev/sdc1 /sdc1
# e2fsck -f /dev/VolGroup00/LogVol00
# /sdc1/ext2resize --verbose /dev/VolGroup00/LogVol00
makes a bunch of progress reports, ending with
error; cross-linked blocks found, run e2fsck first
At this point, I gave up, made sure that everything of value was
backed up to the external drive, and did a fresh installation of
Fedora Core 3. But this time I used DiskDruid, and set up a "small"
8GB root partition, and gave the rest to the LVM. There is a good
guide to using DiskDruid for setting up LVM at
<
http://www.startcom.org/docs/en/System%20Administration%20Guide%20StartCom%20Enterprise%20Linux%203.0.x/
>
Maybe you can find it from < http://tinyurl.com/59mdz >
When you get there, look for Chapter 13. LVM Configuration
I have lots of scratch paper notes, and some more gray hairs. I will
try to write this up in more detail on the KPLUG Wiki in the next day
or two.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
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