My MDTs and MGS are separate since I have two MDTs, I didn¹t want the MGS tied to just one so I separated it. It seems that you should be able to specify more than one MGS for the MDT because there is really no other way to tell it what the MGS failover partner is.
Robert On 11/12/07 3:23 PM, "Wojciech Turek" <[EMAIL PROTECTED]> wrote: > Yes but in given example in section 2.2.2.1 two mgsnodes are specified for > --ost and you are specifying it for --mdt maybe that is the problem? Do you > have combined mgs with mdt ? Do you have one file system or more? > > Wojciech > On 12 Nov 2007, at 21:56, Robert LeBlanc wrote: > >> 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 >>>> >>>> >>>> >>>> >>>> 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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