[Linux-cluster] GFS and performace
pradhanparas at gmail.com
Wed Jan 6 23:47:08 UTC 2010
I have a GFS based shared storage cluster that connects to SAN by fibre
channel. This GFS shared storage hold several virtual machines. While
running hdparam from the host to a GFS share, I get following results.
hdparm -t /guest_vms1
Timing buffered disk reads: 262 MB in 3.00 seconds = 87.24 MB/sec
Now from within the virtual machines, the I/O is low
hdparm -t /dev/mapper/VolGroup00-LogVol00
Timing buffered disk reads: 88 MB in 3.00 seconds = 29.31 MB/sec
I am looking for possibilities if I can increase my I/O read write within my
virtual machines. Tuning GFS does help in this case?
Sorry if my question is not relevant to this list
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