* [gentoo-user] Re: LVM: extending volume groups and logical volumes
@ 2011-12-16 3:05 99% ` Jens Müller
0 siblings, 0 replies; 1+ results
From: Jens Müller @ 2011-12-16 3:05 UTC (permalink / raw
To: gentoo-user
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
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2011-12-16 2:18 [gentoo-user] LVM: extending volume groups and logical volumes Allan Gottlieb
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