|
From: | Shyam Saran |
Subject: | bug#46555: LVM swap continuously fails guix system: error: service 'swap-/dev/mapper/guix-swap' requires 'device-mapping-guix-swap', which is not provided by any service |
Date: | Tue, 2 Mar 2021 16:04:55 +0530 |
Hi Shyam,
Shyam Saran <syamsaran12345@gmail.com> skribis:
> Result of application of system build command
>
> $ guix system build ~/tmp/config.scm
>
> 2s
> guix system: warning: the following groups appear more than once: users
> guix system: error: service 'swap-/dev/mapper/guix-swap' requires
> 'device-mapping-guix-swap', which is not provided by any service
The problem here is that you had:
(file-system
(mount-point "/")
;; …
(needed-for-boot? #t)
(dependencies %localmachine-mapped-devices))
All the needed-for-boot file systems had all the mapped devices in
‘dependencies’. Thus, no ‘device-mapping-guix-swap’ Shepherd service
was created, because that device mapping was needed at boot.
The solution is to remove the ‘dependencies’ field for all your file
systems. Since they have /dev/mapper/… as their ’device’, you don’t
need ‘dependencies’: it’s automatically inferred. If, after this
change, you run:
guix system shepherd-graph /tmp/config.scm| xdot -
you can see that the ‘swap-/dev/mapper/guix-swap’ service depends on
‘device-mapping-guix-swap’.
HTH!
Ludo’.
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