I got several advanced format disk, whose physical size is 4096 bytes, but its logical size is 512 bytes:
$ sudo fdisk -l /dev/sdb
Disk /dev/sdb: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
Is there any special tuning knob I should notice before formating it? IMHO, set the sector size as 4096 bytes is enough. The default block size is 4096 bytes.
$ sudo xfs_info /dev/sdb
meta-data="" isize=256 agcount=4, agsize=45785912 blks
= sectsz=4096 attr=2
data = bsize=4096 blocks=183143646, imaxpct=25
= sunit=0 swidth=0 blks
naming = version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=89425, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
best regards,
韩竹(Zhu Han)
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