Is it possible to change the logical or physical block size on disks?
Issue
- What is recommended sector size for a disk?
- How can we change sector size of a disk from 512 Bytes to 4096 Bytes?
-
Is it possible to change the block size on SCSI disk devices? The
blockdevcommand in RHEL provides information about currently used block size for SCSI disk, is there any utility/command to change block size?$ blockdev --getbsz /dev/sdab 4096 $ blockdev --getbsz /dev/sdac 4096 $ blockdev --getbsz /dev/sdag 4096 $ blockdev --getbsz /dev/sdar 4096 $ blockdev --getbsz /dev/sdak 4096 -
How do I modify the block size of a disk device?
- How can I change the block size to
4Kbfor a disk device? The device currently shows 512 bytes. - How can I change the block size to
8Kbfor a disk device? - How can I change the block size to
16Kbfor a disk device? - How can I change the block size to
128Kbfor a disk device?
Environment
- Red Hat Enterprise Linux (RHEL) 5, 6, 7, 8, 9
- SCSI disk(s)
- ATA disk(s)
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