From: "Jens Müller" <blog@tessarakt.de>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] Re: LVM: extending volume groups and logical volumes
Date: Fri, 16 Dec 2011 04:05:35 +0100 [thread overview]
Message-ID: <jcechv$dm1$1@dough.gmane.org> (raw)
In-Reply-To: <yu9mxattg2f.fsf@nyu.edu>
Am 16.12.2011 03:18, schrieb Allan Gottlieb:
> Questions
>
> 1. Apparently 2.6 (hence 3.x) kernels can expand mounted file systems
> (/var is mounted as ext3).
>
> Since I can't unmount /var because it is in use, I guess that, if I
> every need to shrink /var, I would need to boot off a CD. Is that
> correct?
>
> Back in the day, we had single user mode for this, but I don't see
> how to get the equivalent now.
>
> Is it really safe to extend /var (i.e., /dev/vg/var) while mounted
> as ext3? It sounds frightening since daemons could start running
> and access /var.
Well, online resizing works online, hence the name.
It is of course supposed to be working. You should have a backup
nethertheless.
resize2fs also supports shrinking ext3 partitions, see
http://linux.die.net/man/8/resize2fs
Regards,
Jens
next prev parent reply other threads:[~2011-12-16 3:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-16 2:18 [gentoo-user] LVM: extending volume groups and logical volumes Allan Gottlieb
2011-12-16 2:46 ` Dale
2011-12-16 3:05 ` Jens Müller [this message]
2011-12-16 3:50 ` [gentoo-user] " Jens Müller
2011-12-16 7:41 ` [gentoo-user] " J. Roeleveld
2011-12-16 7:51 ` Dale
2011-12-16 10:02 ` Neil Bothwick
2011-12-16 13:27 ` Pandu Poluan
2011-12-16 9:02 ` Philip Webb
2011-12-17 1:37 ` Allan Gottlieb
2011-12-17 1:56 ` Dale
2011-12-17 2:23 ` Allan Gottlieb
2011-12-17 3:35 ` Dale
2011-12-17 4:14 ` Allan Gottlieb
2011-12-17 4:59 ` Dale
2011-12-17 9:55 ` pk
2011-12-17 13:57 ` Allan Gottlieb
2011-12-17 15:18 ` Dale
2011-12-17 16:47 ` Philip Webb
2011-12-17 17:07 ` Allan Gottlieb
2011-12-20 13:21 ` J. Roeleveld
2011-12-20 13:50 ` Allan Gottlieb
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