Re: [gentoo-user] LVM (Was: the best filesystem for server: XFS or JFS (or?))

[Joost Roeleveld]

On Thursday 24 March 2011 22:07:28 Volker Armin Hemmann wrote:
> On Thursday 24 March 2011 12:08:02 Alan McKinnon wrote:
> > On Thursday 24 March 2011 12:19:39 Dale wrote:
> > > I have never used LVM but when it messes up after a upgrade, as has
> > > happened to many others, see if you say the same thing.  I hope your
> > > backups are good and they can restore.
> >
> > What is this "mess up after an upgrade" of which you speak?
> >
> > I've used multiple versions of LVM on multiple machines across multiple
> > distros for multiple years and never once heard of anyone having a
> > problem with it let along experienced one myself.
> >
> > Shades of FUD methinks.
>
> http://bugs.gentoo.org/buglist.cgi?quicksearch=lvm
> or if you like a bit of history:

Not all of these are LVM, some are only shown because they're related to llvm 
(Which is a virtual machine), but lets ignore those all-together :)

On the first page, at first glance, I don't see any serious ones that are only 
LVM.
The boot-issue was caused by genkernel not being up-to-date with name-changes.

> http://bugs.gentoo.org/buglist.cgi?quicksearch=ALL+lvm
> there you go.

See above

> I like this one:
> http://bugs.gentoo.org/show_bug.cgi?id=350455

Looks like an issue with heavy I/O, affecting the LVM layer trying to lock the 
filesystem.

But I wonder if he's not running into a known issue (which can easily be 
worked around) where pvmove has a memory-leak with the reporting. (eg. the bit 
that checks the progress every 5 seconds, reducing that to every 5 minutes 
significantly reduces that)
However, I do believe this (mem-leak) was fixed.

Am curious what the result will be of that. Please note, I do not run masked 
(~amd64) kernels.

Kind regards,

Joost Roeleveld