I have a intel 900P installed in a Ubuntu 16.04 machine (with nvme 1.0 kernel module loaded by default)
Some of the system information: (it's recognized as 2700... not 900P, I am not sure it's critical or not..)
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$lspci |tail -1
04:00.0 Non-Volatile memory controller: Intel Corporation Device 2700
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$uname -a
Linux 1wk300 4.13.0-38-generic #43~16.04.1-Ubuntu SMP Wed Mar 14 17:48:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
However I saw the output of the fdisk saying it has 512 byte sector size and i/o size
Disk /dev/nvme0n1: 260.9 GiB, 280065171456 bytes, 547002288 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes So here are some of my questions and doubts:
1. Is there any way to reformat the nvme to 4k sector size? I am assuming I will achieving better performance instead of using 512 block size.
2. I have tried the newest release of nvme-format(from the nvme-cli) . using the default configurations(nvme-format + device name) gives the same blocks/sector size. I also tried to delete the default namespaces(nvme delete-ns) and create a new namespace of 4k size (create-ns), but it failed .. some of the output(the operation code sent by nvme-cli somehow is not correct..):
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$sudo nvme detach-ns /dev/nvme0 --namespace-id=0x1
NVMe Status:INVALID_OPCODE(4001)
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$sudo nvme list-ns /dev/nvme0 --namespace-id=0x1
[ 0]:0x209a97b0
[ 2]:0x209a97b0
[ 4]:0x209a97b0
[ 32]:0x2090000
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$sudo nvme list-ns /dev/nvme0
NVMe Status:INVALID_NS(400b) NSID:0
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$sudo nvme id-ns /dev/nvme0 --namespace-id=0x1
NVME Identify Namespace 1:
nsze : 0x209a97b0
ncap : 0x209a97b0
nuse : 0x209a97b0
nsfeat : 0
nlbaf : 0
flbas : 0
mc : 0
dpc : 0
dps : 0
nmic : 0
rescap : 0
fpi : 0
nawun : 0
nawupf : 0
nacwu : 0
nabsn : 0
nabo : 0
nabspf : 0
noiob : 0
nvmcap : 0
nguid : 00000000000000000000000000000000
eui64 : 0000000000000000
lbaf 0 : ms:0 lbads:9 rp:0x2 (in use)
3. I saw someone suggest using intel ssd data center tool. but it seems like it cannot recognize this ssd... perhaps this product is not supported yet?
lifeng@1wk300(x-pheonix:2):~/Workspace/x-phoenix/build$sudo isdct show -a -intelssd
No results
Thanks!