Cluster and RAID 5 Array bottleneck.( I believe)

Jakob Østergaard jakob at unthought.net
Mon Mar 19 20:32:21 PST 2001


On Mon, Mar 19, 2001 at 08:11:11PM -0500, Velocet wrote:
...
> NFSv3 should show a DRASTIC improvement on these stats, though I dont
> have any equipment to test this (only GbE could do this as FastEther (100Mbps)
> is a theoretical max of 12.5Mbps, which NFSv3 does with ease in our operations
> everyday).
> 
> You might also want to check out the nbd (network block device) in linux
> 2.4 - mounting a filesystem on an nbd is supposedly even faster than
> nfs. Perhaps I can get Ben LaHaise of redhat to comment here.. (bcc'd
> in case he doenst want his address known).

Two clients can't mount the same FS over nbd though...

The clients will all have meta-data caches, and they will be inconsistent even
though the block data device is the same on the server.

-- 
................................................................
:   jakob at unthought.net   : And I see the elder races,         :
:.........................: putrid forms of man                :
:   Jakob Østergaard      : See him rise and claim the earth,  :
:        OZ9ABN           : his downfall is at hand.           :
:.........................:............{Konkhra}...............:




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