[Lustre-discuss] More failover issues

[Wojciech Turek]

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 --mgsnode=192.168.1.252 at o2ib -- 
> mgsnode=192.168.1.253 at o2ib --failnode=192.168.1.252 at o2ib /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:  mgsnode=192.168.1.253 at o2ib  
> failover.node=192.168.1.252 at o2ib 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:Nathan.Rutman at Sun.COM]
> 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 --mgsnode=192.168.1.252 at o2ib:192.168.1.253 at o2ib 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
> --mgsnode=192.168.1.253 at o2ib --mgsnode=1 at elan --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: mgsnode=192.168.1.253 at o2ib mgsnode=1 at elan
>
> > Robert
> >
> > Robert LeBlanc
> > College of Life Sciences Computer Support
> > Brigham Young University
> > leblanc at byu.edu
> > (801)422-1882
> >
> >
> > _______________________________________________
> > Lustre-discuss mailing list
> > Lustre-discuss at clusterfs.com
> > https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
> >
>
>
>
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Mr Wojciech Turek
Assistant System Manager
University of Cambridge
High Performance Computing service
email: wjt27 at cam.ac.uk
tel. +441223763517



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