Re: Can't used parted to resize recent ext2 partitions, what has changed?

From: kermit (cku192_at_yahoo.com)
Date: 10/16/05 

Date: Sun, 16 Oct 2005 21:48:11 +0400

Chris F Clark wrote:

[...]
> I also tried using the GNU tool "parted" to resize the partitions. I
> even built the most recent release of it, 1.6.24 to see if that
> worked. However, when editing partitions touched by the new Linux
> version, parted always gives the message:
>
> Error: File system has incompatible feature enabled.
>
> Does anyone have any idea what "the incompatible feature" is and how
> Linux has enabled it on the ext2 partitions and perhaps most
> importantly, how I can disable it?

Build current ext2 utils and use tune2fs to check which features are enabled
and compare this filesystem with others, that are accepted by parted:

{pts/2}% tune2fs -l tmp/e2test
tune2fs 1.38 (30-Jun-2005)
Filesystem volume name: <none>
Last mounted on: <not available>
Filesystem UUID: 14662861-ffd1-47ab-9223-4b3be98a7911
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: filetype sparse_super
...

then use tune2fs to disable "extra" features, check manual page for exact
syntax.

DISCLAIMER: disabling features on filesystem with live data can potentially
result in loss of data; make backup first. Also disabling may simply not be
possible because feature may affect data layout and you can't change data
layout by simply turning some bit in superblock off.

=arvi=

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