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Top Forums UNIX for Advanced & Expert Users How to shrink root file system (LVM) in Linux Fedora 9? Post 302807159 by maverick_here on Tuesday 14th of May 2013 08:12:07 AM
Old 05-14-2013
RedHat Linux Rescue mode

Shrink requires an unmount of the filesystem and since it is the root filesystem it cannot be done in the way it is done for none root filesystems.

Go to rescue mode using a bootable media ( First CD) and.
Do NOT mount /mnt/sysimage, press skip on this step.

You would be directed to rescue shell, In rescue shell do the following

Code:
a] vgchange -a y VGNAME
b] e2fsck -f /dev/VolGroup00/LogVol00
c] resize2fs -f /dev/VolGroup00/LogVol00 Size(in M,G)
d] lvresize -L Size /dev/VolGroup00/LogVol00

 

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PVCK(8) 						      System Manager's Manual							   PVCK(8)

NAME
pvck - check physical volume metadata SYNOPSIS
pvck [-d|--debug] [-h|--help] [-v|--verbose] [--labelsector] PhysicalVolume [PhysicalVolume...] DESCRIPTION
pvck checks physical volume LVM metadata for consistency. OPTIONS
See lvm for common options. --labelsector sector By default, 4 sectors of PhysicalVolume are scanned for an LVM label, starting at sector 0. This parameter allows you to specify a different starting sector for the scan and is useful for recovery situations. For example, suppose the partition table is corrupted or lost on /dev/sda, but you suspect there was an LVM partition at approximately 100 MB. This area of the disk may be scanned by using the --labelsector parameter with a value of 204800 (100 * 1024 * 1024 / 512 = 204800): pvck --labelsector 204800 /dev/sda Note that a script can be used with --labelsector to automate the process of finding LVM labels. SEE ALSO
lvm(8), pvcreate(8), pvscan(8) vgck(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) PVCK(8)
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