Hi Colin, We have Lustre 1.6.7, so OST pools is not available on it. I had the following suggestion from someone which I am going to try out:
> In that case, you can set the striping on the directory in question to > start at OST index 0 with a stripe_count of 8 and create your files in > that directory. This should This will stripe all the files over 8 OSTs, > but it will probably get you close to what you want for testing purposes. > > Here's a quick guide: > http://www.nics.tennessee.edu/node/311 > > > You'll want something like this: > lfs setstripe<directory> -s<stripe_size> -i 0 -c 8 > > The round robin allocated should keep you in the first 8 OSTs but be > careful that you don't switch to the weighted allocator when you start > filling up your OSTs. Thanks, On 02/13/2012 11:15 AM, Colin Faber wrote: > Hi Kshitij, > > If you're using a reasonably modern Lustre you can use the OST pools > feature. This allows you to assign certain OST's to certain > files/directories. > > see 'OST Pools' in the operations manual for more information. > > -cf > > On 02/13/2012 09:56 AM, Kevin Canady wrote: >> More appropriate mail list for this question. >> >> Cheers, >> Kevin >> >> On 2/9/12 3:24 PM, "Kshitij Mehta"<[email protected]> wrote: >> >>> Hello, >>> My lustre installation has a total of 64 OSTs and I have created a >>> directory that has been configured over 8 OSTs. >>> However, files in this directory get striped over different OSTs. For >>> example, >>> file 1 might get striped over OSTs 0 thru 7, whereas file 2 might get >>> striped over OSTs 8 thru 15. >>> >>> How can I configure a directory so that files in it get striped across >>> the *same* set of OSTs? >>> >>> Thanks, >>> Kshitij Mehta >>> PhD candidate >>> Parallel Software Technologies Lab (pstl.cs.uh.edu) >>> Dept. of Computer Science >>> University of Houston >>> Houston, Texas, USA >>> _______________________________________________ >>> Lustre-community mailing list >>> [email protected] >>> http://lists.lustre.org/mailman/listinfo/lustre-community >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/mailman/listinfo/lustre-discuss > ______________________________________________________________________ > This email may contain privileged or confidential information, which should > only be used for the purpose for which it was sent by Xyratex. No further > rights or licenses are granted to use such information. If you are not the > intended recipient of this message, please notify the sender by return and > delete it. You may not use, copy, disclose or rely on the information > contained in it. > > Internet email is susceptible to data corruption, interception and > unauthorised amendment for which Xyratex does not accept liability. While we > have taken reasonable precautions to ensure that this email is free of > viruses, Xyratex does not accept liability for the presence of any computer > viruses in this email, nor for any losses caused as a result of viruses. > > Xyratex Technology Limited (03134912), Registered in England& Wales, > Registered Office, Langstone Road, Havant, Hampshire, PO9 1SA. > > The Xyratex group of companies also includes, Xyratex Ltd, registered in > Bermuda, Xyratex International Inc, registered in California, Xyratex > (Malaysia) Sdn Bhd registered in Malaysia, Xyratex Technology (Wuxi) Co Ltd > registered in The People's Republic of China and Xyratex Japan Limited > registered in Japan. > ______________________________________________________________________ > > -- Kshitij Mehta PhD Candidate Parallel Software Technologies Lab (http://pstl.cs.uh.edu) Dept. of Computer Science University of Houston Texas, USA _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
