[CentOS] shrink LV with ext3 filesystem
Ross S. W. Walker
rwalker at medallion.com
Tue Sep 4 13:31:39 UTC 2007
From: centos-bounces at centos.org
[mailto:centos-bounces at centos.org] On Behalf Of Thomas Antony
> Luciano Rocha schrieb:
> > On Tue, Sep 04, 2007 at 12:40:24PM +0200, Thomas Antony wrote:
> >> Hi.
> >> I want to make a snapshot from a logical volume and
> noticed that there must
> >> be enough free disk space in the volume group. Actually
> there is no free
> >> disk space left.
> >> How do i shrink online /var without losing any data or
> restore from backup?
> > You can't shrink ext2/ext3 filesystems online. You'll have
> to schedule a
> > downtime.
> > Another solution is to remove and use a file for swap
> (swapoff ... &&
> > lvremove ...), or reduce it (swapoff ... && lvreduce ... &&
> mkswap && swapon).
> Is it possible that i log into the server with ssh and umount
> only /var
> and then resize the logical volume?
Maybe in single user mode, but /var is needed for multi-user
mode to function.
Remember: if shrinking, shrink filesystem first then LV, if
expanding then expand the LV first then the filesystem.
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