On 12/02/2010 08:54 AM, Luca Berra wrote: > what you need on kernel side is having in sysfs > under /sys/block/<device> > queue/minimum_io_size > queue/optimal_io_size > queue/physical_block_size Just not all SSD presents proper values here. My advice is align to 1MiB in such case and it will work:-) (this is default in recent versions - not all yet in Debian) You can always do it manually, use fdisk -u (to work in sector mode, note sector is 512B. Switch off DOS mode if it is enabled - there should be warning) For lvm, use pvcreate --dataalignment, then check with pvs -o +pe_start. (You can use --units S to work in sectors mode like in fdisk. 2048 sectors == 1MiB, any multiple of it is ok) (See man page and check archive, I think it was described here several times.) Milan _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
