Re: RHEL ES 4

[Eric Sandeen <sandeen@xxxxxxx>]

Rob Thompson wrote:
> This is in fact a 120 TB (not GB) filesystem that I am trying to build.
>
> What I am attempting to do is to take 80 1.6 TB arrays ((8 x 250 GB Raid
> 5 arrays) 10 arrays from 8 seperate SAN's). Use LVM to make one large
> volume, then use xfs to format and mount this as a single filesystem.
>
> Any advice - or gotcha's would be appreciated.
one piece of advice would be to use an opteron or em64_t or ia64 box - the ia32 
kernels from RHEL4 have 4k stacks enabled which may not play well with xfs on 
top of lvm on top of whatever your other drivers are, under any possible nfs 
sharing, etc.
If 4k stacks don'w cut it for you (testing would be in order...) and you must 
use ia32 kernels, then you would have to rebuild the kernel with 8k stacks - 
patches have floated around this list previously for that.
-Eric

> Thanks,
> Rob