[linux-lvm] Renaming volumes and /proc/mounts

Tue Jan 13 01:55:11 UTC 2015

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

On 01/12/2015 01:14 AM, Linda A. Walsh wrote:
> Phillip Susi wrote:
>> Is it possible to get /proc/mounts to update to the new name
>> after doing an lvrename of a mounted volume?  It plays hell on
>> update-grub when you rename a mounted volume and /proc/mounts
>> still has the old name.
>> 
> lvrename can rename an actively mounted device?  Is it supposed to
> do that?
> 
> That sounds a bit strange.  I mean if I rename a network device,
> I'd have to take down the interface before renaming it.  I'd think
> with a disk partition unmounting it would be, at least, prudent?
> Is it really not necessary?

Of course; the only problem is that /proc/mounts still lists the old
name so an update-grub still uses the old name in /boot/grub/grub.cfg,
so after a reboot, I have to manually edit the command to point to the
new name to boot, then re-run update-grub so subsequent boots work right.