07-05-2013
How to resize filesystem by resizing the LUN without impact to applications.?
Is it possible to resize a filesystem by resizing the LUN on RHEL 6.4 64-bit with LVM and no impact to running applications? The research I have done so far seems to take the approach of adding a new LUN and then expaning the volume group to the new LUN. I'm looking for an approach that avoids a new LUN this as we virtualize all of our Linux. Not requiring a reboot is very important.
Thanks in advance.
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Good afternoon!
Help with a solution
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FSADM(8) FSADM(8)
NAME
fsadm - utility to resize or check filesystem on a device
SYNOPSIS
fsadm [options] check device
fsadm [options] resize device [new_size[BKMGTEP]]
DESCRIPTION
fsadm utility checks or resizes the filesystem on a device. It tries to use the same API for ext2, ext3, ext4, ReiserFS and XFS filesys-
tem.
OPTIONS
-e, --ext-offline
Unmount ext2/ext3/ext4 filesystem before doing resize.
-f, --force
Bypass some sanity checks.
-h, --help
Display the help text.
-n, --dry-run
Print commands without running them.
-v, --verbose
Be more verbose.
-y, --yes
Answer "yes" at any prompts.
new_size
Absolute number of filesystem blocks to be in the filesystem, or an absolute size using a suffix (in powers of 1024). If new_size
is not supplied, the whole device is used.
DIAGNOSTICS
On successful completion, the status code is 0. A status code of 2 indicates the operation was interrupted by the user. A status code of
3 indicates the requested check operation could not be performed because the filesystem is mounted and does not support an online fsck(8).
A status code of 1 is used for other failures.
EXAMPLES
Resize the filesystem on logical volume /dev/vg/test to 1000 megabytes. If /dev/vg/test contains ext2/ext3/ext4 filesystem it will be
unmounted prior the resize. All [y|n] questions will be answered 'y'.
fsadm -e -y resize /dev/vg/test 1000M
ENVIRONMENT VARIABLES
TMPDIR The temporary directory name for mount points. Defaults to "/tmp".
DM_DEV_DIR
The device directory name. Defaults to "/dev" and must be an absolute path.
SEE ALSO
lvm(8), lvresize(8), lvm.conf(5), fsck(8), tune2fs(8), resize2fs(8), reiserfstune(8), resize_reiserfs(8), xfs_info(8), xfs_growfs(8),
xfs_check(8)
Red Hat, Inc LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) FSADM(8)