On 19.02.2013, Reindl Harald wrote: > i can not remember when the last ext3/ext4 > had 512 bytes blocksize [....] Most of the "conventional" harddisks have a sectorsize/blocksize of 512/512. All the newer and bigger WD/Seagate drives and SSDs are using "advanced format", which means 512/4096. To support this, there are two factors which must be present: 1. Proper alignment to 4k block boundaries 2. A filesystem on top which supports 4k blocksize If you use "dd" to raw-copy a 512/512 drive to a newer WD/Seagate or a SSD, this will result in misalignment (even if your FS supports the 4k blocksize) causing huge performance loss. To avoid this, you'll have to create proper aligned partitions on the new drive first, formatted with a FS supporting 4k blocksize, and copy the data the "traditional" way, e.g. using cp, rsync and brothers. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
