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linux: enable NVMe Multipath

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Enable NVME_MULTIPATH so that a single /dev/nvmeXnY device will show
up for each NVMe namespaces, even if it is accessible through multiple
controllers. Can be disabled at boot with `nvme_core.multipath=0`.

This is default enabled in Debian [1], Ubuntu 20.04 [2] , Arch [3] and
Fedora 33 [4].

[1]: https://salsa.debian.org/kernel-team/linux/-/blob/debian/5.10.19-1/debian/config/config#L4362
[2]: https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/tree/debian.master/config/config.common.ubuntu?h=Ubuntu-5.4.0-67.75#n6722
[3]: https://git.archlinux.org/svntogit/packages.git/tree/trunk/config?h=packages/linux#n2423
[4]: https://src.fedoraproject.org/rpms/kernel/blob/f33/f/kernel-x86_64-fedora.config#_4338
This commit is contained in:
Jonathan Teh 2021-03-10 17:40:30 +00:00
parent 396b7066bf
commit 29e7b1ff82
1 changed files with 2 additions and 0 deletions
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2
pkgs/os-specific/linux/kernel/common-config.nix
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@ -772,6 +772,8 @@ let
MLX4_EN_VXLAN = whenOlder "4.8" yes; MLX4_EN_VXLAN = whenOlder "4.8" yes;
MLX5_CORE_EN = option yes; MLX5_CORE_EN = option yes;
NVME_MULTIPATH = whenAtLeast "4.15" yes;
PSI = whenAtLeast "4.20" yes; PSI = whenAtLeast "4.20" yes;
MODVERSIONS = whenOlder "4.9" yes; MODVERSIONS = whenOlder "4.9" yes;