Yes only one MGS per site, but you should be able to specify multiple MGS nodes. We have done it before with 1.6.0. See http://manual.lustre.org/manual/LustreManual16_HTML/DynamicHTML-05-1.html section 2.2.2.1.
Robert On 11/12/07 2:48 PM, "Wojciech Turek" <[EMAIL PROTECTED]> wrote: > Hi, > > I think this is because there can be only one MGS per lustre installation > (this is what manual says). > > Wojciech Turek > On 12 Nov 2007, at 21:18, Robert LeBlanc wrote: > >> >> >> This is what I'm getting: >> >> head2-2:~# mkfs.lustre --mkfsoptions="-O dir_index" --reformat --mdt >> --fsname=home [EMAIL PROTECTED] [EMAIL PROTECTED] >> [EMAIL PROTECTED] /dev/mapper/ldiskd-part1 >> >> Permanent disk data: >> Target: home-MDTffff >> Index: unassigned >> Lustre FS: home >> Mount type: ldiskfs >> Flags: 0x71 >> (MDT needs_index first_time update ) >> Persistent mount opts: errors=remount-ro,iopen_nopriv,user_xattr >> Parameters: [EMAIL PROTECTED] [EMAIL PROTECTED] >> mdt.group_upcall=/usr/sbin/l_getgroups >> >> device size = 972MB >> formatting backing filesystem ldiskfs on /dev/mapper/ldiskd-part1 >> target name home-MDTffff >> 4k blocks 0 >> options -O dir_index -i 4096 -I 512 -q -F >> mkfs_cmd = mkfs.ext2 -j -b 4096 -L home-MDTffff -O dir_index -i 4096 -I 512 >> -q -F /dev/mapper/ldiskd-part1 >> Writing CONFIGS/mountdata >> >> >> For some reason, only the last --mgsnode option is being kept. >> >> Robert >> >> >> -----Original Message----- >> From: Nathan Rutman [mailto:[EMAIL PROTECTED] >> Sent: Mon 11/12/2007 1:51 PM >> To: Robert LeBlanc >> Cc: lustre >> Subject: Re: [Lustre-discuss] More failover issues >> >> Robert LeBlanc wrote: >>> > In 1.6.0, when creating a MDT, you could specify multiple --mgsnode >>> options >>> > and it would failover between them. 1.6.3 only seems to take the last one >>> > and [EMAIL PROTECTED]:[EMAIL PROTECTED] doesn't seem to >>> failover >>> > to the other node. Any ideas how to get around this? >>> > >> Multiple --mgsnode parameters should work: >> mkfs.lustre --mkfsoptions="-O dir_index" --reformat --mdt >> [EMAIL PROTECTED] [EMAIL PROTECTED] --device-size=10000 /tmp/foo >> >> Permanent disk data: >> Target: lustre-MDTffff >> Index: unassigned >> Lustre FS: lustre >> Mount type: ldiskfs >> Flags: 0x71 >> (MDT needs_index first_time update ) >> Persistent mount opts: errors=remount-ro,iopen_nopriv,user_xattr >> Parameters: [EMAIL PROTECTED] [EMAIL PROTECTED] >> >>> > Robert >>> > >>> > Robert LeBlanc >>> > College of Life Sciences Computer Support >>> > Brigham Young University >>> > [EMAIL PROTECTED] >>> > (801)422-1882 >>> > >>> > >>> > _______________________________________________ >>> > Lustre-discuss mailing list >>> > [email protected] >>> > https://mail.clusterfs.com/mailman/listinfo/lustre-discuss >>> > >> >> >> >> >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> https://mail.clusterfs.com/mailman/listinfo/lustre-discuss >> >> >> >> Mr Wojciech Turek >> Assistant System Manager >> University of Cambridge >> High Performance Computing service >> email: [EMAIL PROTECTED] >> tel. +441223763517 >> >> >> >> >> > > > Robert LeBlanc > College of Life Sciences Computer Support > Brigham Young University > [EMAIL PROTECTED] > (801)422-1882 >
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