Adesanya, Adeyemi
2011-May-11 10:59 UTC
[Lustre-discuss] Read-ahead with blockdev --setra ?
One of our users has suggested attempting to tune our test Lustre 1.8.5 OSTs by setting a read-ahead parameter on the underlying device via "blockdev --setra". I tried setting this parameter to 8MB for an OST but as soon as the OST was mounted, the parameter reverted back to 640KB. I see absolutely no mention of this method in the Lustre manual. Can someone on the development team please comment on whether this parameter is effective and can actually be tuned? ------ Yemi