Lustre 1.6 Operations Manual

13.3 Upgrading Lustre from 1.6.3 to 1.6.4
To upgrade Lustre from version 1.6.3 to 1.6.4, perform these steps:
1. Check the current Lustre version on the MDS.
root@mds# uname -a
root@mds# Linux mds.sun.com 2.6.18-8.1.14.el5_lustre.1.6.4.2smp #1
SMP Wed Jan 16 20:49:25 EST 2008 i686 athlon i386 GNU/Linux
2. Check the name of the file system.
[root@mds ~]# cat /proc/fs/lustre/mgs/MGS/filesystems
sunfs
3. Umount the old file system in this order.
■ Client
■ OST
■ MDS
[root@client ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 6940516 4051136 2531132 62% /
/dev/sda1 101086 14484 81383 16% /boot
tmpfs 271844 0 271844 0% /dev/shm
mds@tcp0:/sunfs 4128416 291800 3626904 8% /mnt
[root@client ~]# umount /mnt
4. Cross-check the unmount. You must verify the unmount before upgrading the
Lustre version.
[root@client ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 6940516 4051136 2531132 62% /
/dev/sda1 101086 14484 81383 16% /boot
tmpfs 271844 0 271844 0% /dev/shm
5. Unmount the file system on the MDT and all OSTs in a similar manner.
Chapter 13 Upgrading Lustre 13-9