Feb 21 2018 09:29 PM - edited Feb 22 2018 04:20 PM
Feb 21 2018 09:29 PM - edited Feb 22 2018 04:20 PM
Dear Forum,
Observed that SSD disks are having 512bytes emulator logical sectors and 4k physical sectors (Advanced Format with 4096 byte physical sectors). Will there be any performance penalty if proceed with a default LVM creation and and XFS filesystem.
Please share your experience with Linux & SSD disks.
RHEL7.4
Standard G5
Premium SSD 1TB
# fdisk /dev/sdc
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): q
# fdisk -l /dev/sdc
Disk /dev/sdc: 1098.4 GB, 1098437885952 bytes, 2145386496 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
#
Thanks,
Joe