All Questions
35
questions
0
votes
0
answers
29
views
Understanding nvme over fabrics configuration and its persistence
I'm experimenting with understanding the NVMe protocol and for that creating a local NVMe over fabrics setup using a Linux VM, two VMs actually. These VMs are on the same network.
One of these VMs act ...
- 121
0
votes
1
answer
319
views
Fedora occasionally freezes when entering Sleep Mode
Fedora occasionally freezes when entering Sleep Mode.
I bought an Samsung 970 Evo Plus NVME SSD for my PC (AMD Ryzen CPU and a AMD Radeon GPU. Both are a few years old.)
Last night the computer ...
0
votes
1
answer
286
views
FIO reports slower sequential read than the advertised NVMe SSD read bandwidth
TLDL
For the very simple sequential read, FIO reports is much slower than the NVMe SSD sequentail read capability.
Main Text
Hello everyone,
I have been facing an issue while trying to achieve the ...
- 147
3
votes
1
answer
411
views
How to format NVMe drive in Linux suitable for raid 1 and lvm on xen Host
I want to create a software raid on two identical SSDs
How do I create partitions and format them optimal?
lsblk
nvme0n1 259:0 0 953.9G 0 disk
nvme1n1 259:1 0 953.9G 0 ...
- 29.4k
0
votes
1
answer
477
views
Cannot create an NVMe shared namespace and attach it to both primary and secondary controllers
I tried creating a namespace on a Samsung PM1735 NVMe SSD then attach it to primary (0x41) and secondary (0x1) controllers, but it's attaching only to the primary controller (I'm running on Ubuntu 20....
- 1
0
votes
0
answers
114
views
Newly Cloned NVMe won't boot on laptop
In my fairly old laptop running Fedora 38 I have an normal 2.5" SSD drive. The laptop has a NVMe slot so I added a NVMe drive into the laptop.
I Installed the NVMe drive into the laptop and ...
- 101
3
votes
0
answers
2k
views
Heavy IO causes NVMe controller is down; will reset
My laptop has a Kingston KC3000 NVMe SSD which becomes unavilable during heavy IO. This is my boot drive so this issue causes Linux to crash. I have tried setting the kernel parameters nvme_core....
- 131
2
votes
1
answer
1k
views
Swap logical device names of two NVME SSD drives
Is it possible to swap logical device names of two NVME SSD drives installed in a laptop (Lenovo Legion 5 Pro 2022) without phisically swapping their port positions?
I would like the current /dev/...
- 23
0
votes
1
answer
2k
views
Isolating I/O issue with NVME or hardware?
Hardware:
Samsung 980 PRO M.2 NVMe SSD (MZ-V8P2T0BW) (2TB)
Beelink GTR6, with the SSD in the NVMe slot
Since the hardware arrived, I've installed Ubuntu Server on it as well as a bunch of services (...
- 101
1
vote
1
answer
1k
views
What is the impact of different Linux I/O APIs on performance benchmarking of NVMe SSDs? (libaio vs SPDK vs io_uring)
I am benchmarking NVMe SSDs on my Linux server, with the aim to achieve the IOPS, BW and Latency values as mentioned in the product specifications.
I'm using FIO as workload generator, and used libaio ...
1
vote
1
answer
991
views
Clonezilla generates disk clone with wrong/unupdated UUIDs
[original question in https://stackoverflow.com/questions/73959107/clonezilla-generates-disk-clone-with-wrong-unupdated-uuids]
I recently used clonezilla (disk-to-disk) - both stable and alternative ...
- 111
0
votes
0
answers
429
views
what is the right way of mounting an ext4 formatted ssd or nvm?
I have mounted 2 external disks like this shown below (in fstab)
UUID=e3831bf2-d85d-459f-8091-4af1d3c6ee41 /mnt/ssd ext4 defaults 0 1
UUID=38cebf19-8cea-40ce-9014-d6f2f9d884ac ...
- 228
1
vote
1
answer
2k
views
fstrim: /: FITRIM ioctl failed: Structure needs cleaning
On my Debian sid with custom 5.17.0-rc1 kernel
installed on my new (< 1 month) SSD nvme WD SN850
my root partition is formatted as f2fs(v 1.14)
I get fstrim: /: FITRIM ioctl failed: Structure needs ...
3
votes
1
answer
2k
views
How to understand the output of the nvme command?
To optimize performance of an SSD, the Arch wiki says to run nvme id-ns /dev/nvme0n1 and evaluate the output, specifically of the last lines starting with lbaf. If there's more than one lbaf entry, ...
- 307
6
votes
1
answer
9k
views
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)
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