Phillipe, One way to circumvent this would be to create one file on each OST, loop mount them on the client and use pvcreate on each to size them at ~950 MB. Once you've done that create a VG (striped, stripe size should be exactly 1M (lustre's preferred I/O size), and you should be good to go.
It's been awhile since I've played around with doing this, but it's the basic idea. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Eudes PHILIPPE Sent: Wednesday, December 15, 2010 12:06 PM To: [email protected] Subject: [Lustre-discuss] howto make a lvm, or virtual lvm? Hello I’m newbie on lustre ☺ Currently, i make some test on virtual machines. I’ve: - Server mds1 for mdt mgs - Server ost1 for data, with 2 drives 1Go (for test, it's some virtual machines) - Server client to mount mds On server mds1 /dev/sda3 93G 461M 87G 1% /mds On server ost1 /dev/sdc 1008M 64M 967M 2% /home/ost2 /dev/sdb 1008M 957M 68K 100% /home/ost1 ( Or On server ost1 /dev/sdb 1008M 957M 68K 100% /home/ost1 On server ost2 /dev/sdb 1008M 64M 967M 2% /home/ost2 } On client 192.168.45...@tcp0:/large-fs 2,0G 1,3G 629M 68% /home 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.... 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 Maybe I must create a lvm, but I don't found howto to (maybe it's possible to create lvm without format when I add others ost later..) Questions: - it's the good way? - How I can write a 1.8Go (one file) on the 2 os, one part on ost1, one and final part on ost2 Regards _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
