On 3/14/2011 1:17 PM, Mike Snitzer wrote: > Both LVM2 and Device Mapper have been updated to accommodate stacking > such a mix of drives. > > See this for a bit more detail: > http://people.redhat.com/msnitzer/docs/io-limits.txt > > Particularly, the "Stacking I/O Limits" section. > > The concern raised for partial (4k) writes to the 512b drive was > discussed a bit more here: http://lkml.org/lkml/2010/2/22/295 Unfortunately this does not help with the WD EARS model drives ( are there any other 4kb sector drives on the market now? ), since they lie and report that they have 512 byte sectors. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/