problem using parted on partition containing a logical volume

[Bill Tangren]

BERES Laszlo wrote:
> Bill Tangren írta:
> 
>> parted won't change the partition.
>>
>> Why? What am I doing wrong?
> 
> Did you read this doc?
> 
> http://www.gnu.org/software/parted/manual/html_chapter/parted_7.html
> 

This document states that one should reduce the size of the partition first, 
before reducing the size of the logical volume group. So, I reinstalled the OS, 
repartitioning along the way, so that I can try with a clean slate.

When I run parted, I get the same problems:

# parted /dev/hda
Using /dev/hda

(parted) check 1
Error: Filesystem has incompatible feature enabled

(parted) check 2
Error: Could not detect filesystem.

(parted) print 2
Error: Could not detect filesystem.

(parted) print
Disk geometry for /dev/hda: 0.000-19073.486 megabytes
Disk label type: msdos
Minor      Start        End        Type     Filesystem   Flags
1          0.031       101.975     primary  ext3         boot
2        101.975     19069.343     primary               lvm

(parted) resize 2 101.975 4813
Error: Could not detect file system.

This is BEFORE I reduced the logical volumes.

This:

http://hypodermia.blogspot.com/2005/08/in-case-this-ever-happens-to-you.html

indicates that it is not possible to resize the partition as it is, because of 
incompatible features in the filesystem that make it incompatible with parted 
and partition magic. The fix listed there seems to leave the filesystem without 
the ability to use SELinux, which I find unacceptable.

This

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=90894

indicates that this is a bug in parted, which will be fixed in the 2.0 release. 
It indicates that:

"Currently the _only_ tool that can resize ext3 filesystems is resize2fs
available in e2fsprogs.  While annoying, you can use resize2fs to resize the
filesystem and then use fdisk or parted to resize the partition boundary to
match the new filesystem size.  With parted 2.0, we'll be able to do this in one
step."

I'll try resize2fs on this toy system, and see how it is done.

Bill