Workload Partition (WPAR) - Sharing filesystem Global AIX to WPAR
nagger 100000MRSJ Comment (1) Visits (12031)
I got another WPAR question today:
From the Global AIX, I can add a filesystem to /wpa
My first answer is well you can use NFS because I do that all the time and I am a heavy user of NFS - no jokes please. I use NFS heavily! If the NFS server exports the mount point for every body or just to the WPAR then within the WPAR the admin user can just mount the filesystem as normal for AIX. For example for a machine called blue and a exported directory called /files just use:
mount blue:/files /mnt
Not exactly rocket science and takes nearly a tenth of a second! NFS was first released in 1984 so not bad for 28 year old software but Networks are 10,000 faster. The same file system can be mounted in to loads of LPARs and WPARs for read-write or read-only.
*** FLAME ON ***
I really wonder about SAN disks sometimes as that is doing largely the same thing = making some files available on another machine. But it takes days or weeks for most SAN teams to get the space available, via mind bending 20 digit hexadecimal identities, odd user interfaces, carving up chucks of disk and zoning then on the network and then the server guys have to create a filesystem on top. Is it just me but the mount command seems to do all that in 1/10,000 of the time? :-)
*** FLAME OFF ***
There is another way avoiding the network
The same thing in diagram form:
Oddly, I don't see a worked example in the Exploiting IBM AIX Workload Partition Redbook - perhaps one for the next edition.