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Re: [dm-devel] Device Mapper MultiPath



On Thu, Apr 02, 2009 at 02:09:56PM -0500, Andy wrote:
> On Wed, Apr 01, 2009 at 04:31:08PM -0400, Konrad Rzeszutek wrote:
> > On Wed, Apr 01, 2009 at 03:08:41PM -0500, Andy wrote:
> > > On Tue, Mar 31, 2009 at 08:25:59PM -0400, Konrad Rzeszutek wrote:
> > > > On Tue, Mar 31, 2009 at 09:07:08PM -0300, Rodrigo Nascimento wrote:
> > > > > Hi All,
> > > > > 
> > > > > I'm a student of computer sciences and I'd like to collaborate with the
> > > > > development of the DM-MP.
> > > > > I know that maybe you received this kind of message during all time, but I
> > > > 
> > > > I think you are the first :-)
> > > > 
> > > > > really want to help, with anything.
> > > > 
> > > > Shakedown help would be nice. As in, trying to yank stuff underneath it, 
> > > > add new block disks, remove them, add them, remove them, edit the
> > > > multipath.conf file and issue 'reconfigure', resize the maps, 
> > > > then add 1000+LUNs, and while they are being added, start removing the
> > > > LUNs, then for extra fun call 'dmsetup remove_all' while in another
> > > > thread you run 'multipath'. Ooh, and see if there are any memory leaks
> > > > while this all is being done.
> > > > 
> > > 
> > > What I would really like to see is online resizing of non-partitioned dm
> > > block devices.  I would love to be able to resize an underlying dm-mp block
> > > device, and the just grow the filesystem without using a extra, un-needed,
> > 
> > Benjamin posted a CVS patch of this, that I've forward-ported to work with
> > the latest git. It is attached.
> > 
> > 
> 
> Thanks, I must have missed that post.  Unfortantly, I am having problems with
> multipathd in the latest git.  It fails all my paths and hangs.  It I go

Ugh. That doesn't bode well. Try running it with 'strace' to see if it is hanging
on the ioctl or what not.


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