Am 19.02.2013 18:48, schrieb Heinz Diehl: > 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. and why did you strip the part where i showed you that any of my filesystems of the last 5 years have a 4 KB blocksize as also any of my hardware of the last 5 years is "newer"?
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