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Questions tagged [nvme]

130 questions
37
votes
2 answers

What are nvme namespaces? How do they work?

I've recently begun supporting Linux installed on devices with built-in nvme ssds. I noticed the device files had an extra number, beyond a number identifying the drive number and the partition number. IDE/SATA/SCSI drives normally only have a drive…
JeffFromOhio
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16
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1 answer

How to evaluate the wear level of a NVMe SSD?

I have a laptop with NVMe SSD: # nvme list Node SN Model Namespace Usage Format FW Rev ---------------- --------------------…
Vlastimil Burián
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14
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2 answers

List features of NVMe drive (like hdparm -I for non-NVME)

With a non-NVMe drive, I can run: # hdparm -I /dev/whatever | grep TRIM Data Set Management TRIM supported (limit 8 block) Deterministic read data after TRIM With a Samsung 960 EVO 1TB NVMe drive (PCI Express), I get: # hdparm -I…
user1902689
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11
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3 answers

NVMe: missing or invalid SUBNQN field

I cannot figure out how to get my NVMe disks recognized in a brand new system. No matter which distro I use, the dmesg output is the same: (Live CD) xubuntu@xubuntu:~$ dmesg | grep -i nvme [ 5.007954] nvme nvme0: pci function 0000:08:00.0 [ …
blakev
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6
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1 answer

I don't see results of a self test of an SSD in smartctl

I want to test my SSD. It seems that I can start a self test with smartctl, but when I try to display test's results, I don't see anything. My SDD's model is PNY CS3030 250GB SSD: $ lsblk -d -o name,model /dev/nvme0n1 NAME MODEL nvme0n1 PNY…
user983447
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6
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1 answer

mount with umask does not works

I tried to run mount /home/user/nvme0n1 -U 8da513ec-20ce-4a2d-863d-978b60089ad3 -t ext4 -o umask=0000 and the response is: mount: /home/user/nvme0n1: wrong fs type, bad option, bad superblock on /dev/nvme0n1, missing codepage or helper program,…
user3563894
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6
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2 answers

How to check/fix nvme health?

I'm running debian stable with a 2 x nvme Raid 1. Here is the hardware/hoster it's running on https://www.hetzner.com/dedicated-rootserver/ex62-nvme?country=us Almost every second day mdadm monitoring reports a fail event and leaves the array…
treffner
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5
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1 answer

Linux filesystems for code-compilation, which perform best?

For the purpose of compiling code on fast hard drives (NVME for example), is there a clear winner for code compilation or are the popular file systems roughly comparable? (EXT4, XFS, BTRFS, ZFS)? I'd assume the efficiency gains from any compression…
ideasman42
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5
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1 answer

How to check / change NVME HMB on Linux?

New DRAM-less NVME SSDs use a portion of the system memory as HMB (Host memory buffer). How can I check / change NVME HMB on Linux? (to verify it is working correctly or alter its behavior)
Microsoft Linux TM
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5
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1 answer

NVMe performance hit when using LUKS encryption

I'm running all the commands on the Proxmox host, when I LUKS encrypt a disk I get about a 28% hit in read speeds and 66% hit in write speeds. I have aes-ni enabled and I should be getting good enough performance from hardware acceleration so I…
milkyway
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5
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1 answer

root filesystem on NVMe device

I have an Intel 750 NVMe drive. Works fine. Well.. sort of. I would like to use this device as my root file system. I have no bios support for NVMe devices. I have the nvme driver enabled in the kernel and not a module. I can mount the nmve…
p brown
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4
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0 answers

NVMe errors diagnostics

I would like to understand why I get the below mails about S.M.A.R.T. of my new NVMe drive. DMESG $ dmesg --ctime | grep -i nvm [Mon Aug 8 10:48:31 2022] nvme nvme0: pci function 0000:3d:00.0 [Mon Aug 8 10:48:31 2022] nvme nvme0: missing or…
Vlastimil Burián
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4
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2 answers

Using GRUB to bootstrap Windows10 from a PCIe NVMe SSD

I have a computer about ten years old, and I would like to install a PCIe M.2 NVMe SSD in it. Unfortunately, the BIOS cannot boot from the SSD, because it doesn't know how to boot from a PCIe SSD. This means that I must use SATA instead of PCIe,…
merendo07
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1 answer

grub command after fresh install of 20.04 focal alongside Win10 on NVMe drive

I have a Windows 10 install on an NVMe drive. I've installed Ubuntu 20.04 and all installed smoothly, until the first boot. I was greeted with a grub prompt. grub> After searching the forums and finding a wealth of information, I've been able to…
user641699
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4
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1 answer

clarifying nvme apst problems for linux

I have experienced an issue nearly identical to one described in the askubuntu community. Like that of the user who posted this issue, my system features a Kingston NVME disk, and as with that user, my issue resolved by adding the following kernel…
brainchild
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