Ok, so, i'll try this : - One mds - 2 physical oss with one drive (1 GB) (one ost on one oss)
On client, mount mds on /home.. lfs setstripe -c2 /home I upload (in sftp) one file, 300 MB - On Oss 1, he use 150 Mb of 1000 - On Oss 2, he use 150 Mb of 1000 All right! I continue... copy my first file 4 times (so there is 5 * 300 MB = 1500 MB) - On Oss 1, he use 750 Mb of 1000 - On Oss 2, he use 750 Mb of 1000 ************************* Now, I add a new oss server, with one ost (1GB) - On Oss 1, he use 750 Mb of 1000 - On Oss 2, he use 750 Mb of 1000 - On Oss 3, he use 0 Mb of 1000 lfs setstripe -c3 /home on client I upload a big file, 1.3 Go He write on oss1, 2 and 3, but, when oss 1 and oss2 are full, he stop (Couldn't write to remote file "/home/big_log.log": Failure) ****************************** So now, - On Oss 1, he use 1000 Mb of 1000 - On Oss 2, he use 1000 Mb of 1000 - On Oss 3, he use 250 Mb of 1000 I upload again, just for see, my first file (300 MB), he copy the file only on Oss3 (oss 1 and 2 are full of course), it's ok :) Is there a solution for this problem? Regards -----Message d'origine----- De : Andreas Dilger [mailto:[email protected]] Envoyé : mercredi 15 décembre 2010 22:39 À : Eudes PHILIPPE Cc : [email protected] Objet : Re: [Lustre-discuss] howto make a lvm, or virtual lvm? On 2010-12-15, at 10:06, Eudes PHILIPPE wrote: > At the end, I want (if it's possible), a raid 5 over Ethernet, or, 1 physical raid 5 on each ostX and a big lvm I can extend as I want.... Lustre itself can not do RAID over the network, if that is what you are looking for... > For my first test, I upload on client a file (1.8 Go) (each ost have 1 > Go) The problem, is, when sdb is full, he stop the copy, and don't > continue on ost2 If you create your file to be striped over both OSTs, then it should work. Use "lfs setstripe -c2 /home/newfile" to specify a stripe count of 2. Cheers, Andreas -- Andreas Dilger Lustre Technical Lead Oracle Corporation Canada Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
