Hello all,
I had some Samsung 980 Pro NVME SSDs left and wanted to put them into a ZFS pool. Now I was wondering which ashift value I should put in...
I read that ashift=12 is good for 4k sector size, well yes but somehow Linux only shows me a logical and physical sector size of 512 on my SSDs:
So now the question which ashift value should I use?
Can I maybe change my SSDs somehow to 4k or can it be that these SSDs only support 512?
I found no information about the sector size of the NVME Drives.... But I can't imagine that they only support 512.
Thanks in advance![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I had some Samsung 980 Pro NVME SSDs left and wanted to put them into a ZFS pool. Now I was wondering which ashift value I should put in...
I read that ashift=12 is good for 4k sector size, well yes but somehow Linux only shows me a logical and physical sector size of 512 on my SSDs:
root@pve:~# fdisk -l /dev/nvmen1
fdisk: cannot open /dev/nvmen1: No such file or directory
root@pve:~# fdisk -l /dev/nvme1n1
Disk /dev/nvme1n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 980 PRO 1TB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: ***
So now the question which ashift value should I use?
Can I maybe change my SSDs somehow to 4k or can it be that these SSDs only support 512?
I found no information about the sector size of the NVME Drives.... But I can't imagine that they only support 512.
Thanks in advance
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