Sorry again, it is excellently working In boot I had noticed enabling swap DEVICE swap signature is missing on DEVICE than understood I had not marked it as swap $ cat /proc/swaps; sudo swapon --all --verbose ; sudo swapon -s ; free -h Filename Type Size Used Priority /dev/mapper/guix-swap partition 1048572 0 -2 Filename Type Size Used Priority /dev/mapper/guix-swap partition 1048572 0 -2 total used free shared buff/cache available Mem: 31Gi 1.6Gi 28Gi 1.0Mi 1.6Gi 29Gi Swap: 1.0Gi 0B 1.0Gi Thanks very much for great help and GNU, Guix, and all the stuff. Thanks again Shyam On Tue, 2 Mar 2021 at 21:42, Shyam Saran wrote: > Hi > > after reconfigure > > building > /gnu/store/qnskr1r67lp92bgy136hqvm7r96s3qrd-upgrade-shepherd-services.scm.drv... > guix system: warning: exception caught while executing 'start' on service > 'swap-/dev/mapper/guix-swap': > In procedure swapon: "/dev/mapper/guix-swap": Invalid argument > guix system: warning: some services could not be upgraded > hint: To allow changes to all the system services to take effect, you will > need to reboot. > > after 2 reboots also > > $ cat /proc/swaps > > 27s > Filename Type Size Used Priority > $ swapon -s > $ sudo swapon -s > $ swapon --all --verbose > $ sudo swapon --all --verbose > $ > > > > > I do not see swap is getting enabled. > > > Thanks > > > > On Tue, 2 Mar 2021 at 16:12, Shyam Saran wrote: > >> Sorry >> >> I had forgot to remove >> >> dependency from /boot/efi >> >> >> So it was causing this error >> >> attached the file, reconfiguring the whole system >> hoping it must work >> >> >> >> Thanks very much for all the help :) >> >> >> >> >> On Tue, 2 Mar 2021 at 16:04, Shyam Saran >> wrote: >> >>> As mentioned I had removed all dependency for root "/" fs >>> >>> but result is same >>> >>> $ guix system build ~/tmp/config.scm >>> 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 >>> >>> Then again removed all dependencies from all fs /var /gnu /tmp etc >>> But the result is the same. >>> >>> $ guix system build ~/tmp/config.scm >>> 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 >>> >>> >>> Thanks >>> >>> >>> On Mon, 1 Mar 2021 at 14:56, Ludovic Courtès wrote: >>> >>>> Hi Shyam, >>>> >>>> Shyam Saran 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’. >>>> >>>