2006-12-20 20:20:00
The past two weeks I've been learning new stuff at a very rapid pace, because my client uses only a few Solaris boxen and has no Linux whatsoever. So now I need to give myself a crash course in both AIX and Tru64 to do stuff that I used to do in a snap.
For example, there's adding a new SAN device to a box, so it can use it for a new file system. Luckily most of the steps that you need to take are the same on each platform. It's just that you need to use different commands and terms and that you can skip certain steps. The lists below show the instructions for creating a simple volume (no mirroring, striping, RAID tricks, whatever) on all three platforms.
Adding a new LUN to a Solaris box with SDS
1. Assign new LUN in the SAN fabric.
Not something I usually do.
2. Let the system search for new hardware.
devfsadm -C disks
3. Label the "disk".
format -> confirm label request
When using Solaris Volume Manager
4. Add the disk to the volume manager.
metainit -f $META 1 1 $DISK
5. Create a logical volume.
metainit $META -p $SOFTPART $SIZE
6. Create a filesystem
newfs /dev/md/rdsk/$META
7. Test mount.
mount $MOUNT
8 Add to fstab.
vi /etc/vfstab
When using Veritas Volume Manager
4. Let Veritas find the new disk.
vxdctl enable
5. Initialize the disk for VXVM usage and add it to a disk group.
vxdiskadm -> initialize
6. Create a new volume in the diskgroup.
Use the vxassist command.
7. Create a file system.
newfs /dev/vx/rdsk/$VOLUME
8. Test mount
mount $MOUNT
9. Add to vfstab
vi /etc/vfstab
Adding a new LUN to an AIX box with LVM
1. Assign new LUN in the SAN fabric.
Not something I usually do.
2. Let the system search for new hardware.
cfgmgr
3. Label the "disk".
Not required on AIX.
4. Add the disk to a volume group.
mkvg -y $VOLGRP -s 64 -S $DISK
5. Create a logical volume.
mklv -y $VOLNAME -t jfs2 -c1 $VOLGRP $SIZE
6. Create a filesystem
crfs -v jfs2 -d '$VOLNAME' -m '$MOUNT' -p 'rw' -a agblksize='4096' -a logname='INLINE'
7. Test mount
mount $MOUNT
8 Add to fstab.
vi /etc/filesystems
Adding a new LUN to a Tru64 box running TruCluster
I'll edit this post to add these instructions tomorrow, or on Friday. I still need to try them out on a live box ;)
Anywho. It's all pretty damn interesting and it's a blast having to almost instantly know stuff that's completely new to me. An absolute challenge! It's also given me a bunch of eye openers!
For example I've always thought it natural that, in order to make a file system switch between nodes in your cluster, you'd have to jump through a bunch of hoops to make it happen. Well, not so with TruCluster! Here, you add the LUN, go through the hoops described above and that's it! The OS automagically takes care of the rest. That took my brain a few minutes to process ^_^
kilala.nl tags: work, unix, studying, sysadmin,
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