Re: [Lustre-discuss] [ROMIO Req #940] [Fwd: Re: [Lustre-devel] a new Lustre ADIO driver]

2009-03-18 Thread emoly.liu
Hi rob, Robert Latham wrote: On Mon, Mar 16, 2009 at 03:41:47PM +0800, emoly.liu wrote: Thanks for the documentation. These explanations are good, but now we've found a few problems. The naming issues are rather minor, but some of your hints aren't compliant with the MPI-IO spec, unfortun

Re: [Lustre-discuss] Group Lock in Lustre: write call is blocking

2009-03-18 Thread Alexander Zarochentsev
Hi, On 18 March 2009 23:03:12 Oleg Drokin wrote: > Hello! > > On Mar 16, 2009, at 5:41 AM, pascal.dev...@bull.net wrote: > > Could anyone tell me if I made a mistake, if Lustre does not > > support the > > group lock or if it is a bug in Lustre ? > > Thank you for bringing this to our attention. >

Re: [Lustre-discuss] Group Lock in Lustre: write call is blocking

2009-03-18 Thread Alexander Zarochentsev
Hello, On 16 March 2009 12:41:20 pascal.dev...@bull.net wrote: > Hi, > > I have seen the group lock Design at: > http://lists.lustre.org/pipermail/lustre-devel/2006-May/71.html > I checked the group lock capabilities with the programme > parallel_grouplock.c: > http://lustre.sourcearchive.com/

Re: [Lustre-discuss] Group Lock in Lustre: write call is blocking

2009-03-18 Thread Oleg Drokin
Hello! On Mar 16, 2009, at 5:41 AM, pascal.dev...@bull.net wrote: > Could anyone tell me if I made a mistake, if Lustre does not support > the > group lock or if it is a bug in Lustre ? Thank you for bringing this to our attention. Please file a bug. This is a bug in lustre introduced by "lockl

Re: [Lustre-discuss] [ROMIO Req #940] [Fwd: Re: [Lustre-devel] a new Lustre ADIO driver]

2009-03-18 Thread Robert Latham
On Mon, Mar 16, 2009 at 03:41:47PM +0800, emoly.liu wrote: > Robert Latham wrote: >> Second favor: documentation... Can you send me a brief summary of >> the new hints? > Sure Thanks for the documentation. These explanations are good, but now we've found a few problems. The naming issues are

Re: [Lustre-discuss] Lustre Group on LinkedIn

2009-03-18 Thread Mag Gam
Is there a facebook page? On Tue, Mar 17, 2009 at 1:48 AM, Jeffrey Bennett wrote: > Hello, > > No intention to spam but I would like to mention that there is a Lustre group > on LinkedIn for those interested. > > The URL is http://www.linkedin.com/groups?home=&gid=1772375 > > jab > > __

Re: [Lustre-discuss] MDT backup

2009-03-18 Thread Mag Gam
Alex: For its worth, we gave up on backing up our MDS because of its sheer size and the contents of our filesystem. We have close to 40TB of space with very small files. Backing up MDS without LVM snapshot took almost 5 days. Its probally better to have a backup of your most important files and i

Re: [Lustre-discuss] Replacing OSTs

2009-03-18 Thread Mag Gam
I suggest creating a new filesystem and rsync the data over the network. I would not over complicate the situation. On Mon, Mar 16, 2009 at 8:41 AM, Rayentray Tappa wrote: > Hi List! > > As you may already know :) I'm now trying a lustre installation on a > mass storage prototype. I'll soon be re