On Wednesday 29 September 2010, Boris Epstein wrote: > On Wed, Sep 29, 2010 at 11:53 AM, James A. Peltier <jpeltier@xxxxxx> wrote: > > | However, given the size of the device I assume that this is a raid of > > | some > > | sort. You'll want to make sure to run mkfs.xfs with the proper stripe > > | parameters to get the alignment right. Also, you may want to make sure > > | your > > | LVM or partition table is properly aligned. ... > I am wondering if I need to worry about stripe and width though as > mine resides on a logical volume residing on a hardware-controlled > RAID 6 device (i.e., one slice as far as the OS is concerned). That is why you need to consider it. If the device is aligned on stripe size (chunk size * (number of drives - 2 for raid6 parity)) and the filesystem is made aware it can put stuff (files, metadata, etc.) so that a minimum of stripes are touched (less I/O done). /Peter > Boris.
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