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Operating Systems Linux Red Hat How to resize filesystem by resizing the LUN without impact to applications.? Post 302829627 by aenagy on Friday 5th of July 2013 10:15:09 AM
Old 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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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)
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