GNU bug report logs - #34255
wishlist: Add guix-y way to create swapfile

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Package: guix; Severity: wishlist; Reported by: swedebugia <swedebugia@HIDDEN>; dated Wed, 30 Jan 2019 07:49:02 UTC; Maintainer for guix is bug-guix@HIDDEN.

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Date: Sun, 3 Feb 2019 16:59:14 +0100 (CET)
From: david.larsson@HIDDEN
To: swedebugia <swedebugia@HIDDEN>
Subject: Re: bug#34255: wishlist: Add guix-y way to create swapfile
In-Reply-To: <85f0c642-8f24-3b33-ded8-dee9e191f567@HIDDEN>
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> Hi
>
> I specified a swapfile in my config without creating it on disk manually.
>
> (swap-devices '("/swapfile"))
>
> Then I predictably got this error:
>
> guix system: error: exception caught while executing 'start' on service 
> 'swap-/swapfile':
> In procedure swapon: "/swapfile": No such file or directory
>
> I think we should let guix do all the dirty work of generating the swapfile 
> so we can do something like:
>
> (swap-file
> 	(file "/swapfile"))
> 	(size "1G"))
>
> And then guix will invoke the relevant file tools to create and enable the 
> swap file.
>
> We could add a check to see if the file exist and if yes try to use it as is.

Hi,

I just want to give a little warning or tip regarding swapfiles on
btrfs. Generally you can't use swapfiles on btrfs - swapon will throw an
error and btrfs-balance will corrupt the filesystem but with a few
tricks swapfiles actually can be used on btrfs:
https://github.com/sebastian-philipp/btrfs-swapon

Best regards,
David L
Information forwarded to bug-guix@HIDDEN:
bug#34255; Package guix. Full text available.

Message received at 34255 <at> debbugs.gnu.org:


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Date: Sun, 3 Feb 2019 16:59:14 +0100 (CET)
From: david.larsson@HIDDEN
To: swedebugia <swedebugia@HIDDEN>
Subject: Re: bug#34255: wishlist: Add guix-y way to create swapfile
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> Hi
>
> I specified a swapfile in my config without creating it on disk manually.
>
> (swap-devices '("/swapfile"))
>
> Then I predictably got this error:
>
> guix system: error: exception caught while executing 'start' on service 
> 'swap-/swapfile':
> In procedure swapon: "/swapfile": No such file or directory
>
> I think we should let guix do all the dirty work of generating the swapfile 
> so we can do something like:
>
> (swap-file
> 	(file "/swapfile"))
> 	(size "1G"))
>
> And then guix will invoke the relevant file tools to create and enable the 
> swap file.
>
> We could add a check to see if the file exist and if yes try to use it as is.

Hi,

I just want to give a little warning or tip regarding swapfiles on
btrfs. Generally you can't use swapfiles on btrfs - swapon will throw an
error and btrfs-balance will corrupt the filesystem but with a few
tricks swapfiles actually can be used on btrfs:
https://github.com/sebastian-philipp/btrfs-swapon

Best regards,
David L
Information forwarded to bug-guix@HIDDEN:
bug#34255; Package guix. Full text available.

Message received at submit <at> debbugs.gnu.org:


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To: bug-guix@HIDDEN
From: swedebugia <swedebugia@HIDDEN>
Subject: wishlist: Add guix-y way to create swapfile
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Hi

I specified a swapfile in my config without creating it on disk manually.

(swap-devices '("/swapfile"))

Then I predictably got this error:

guix system: error: exception caught while executing 'start' on service 
'swap-/swapfile':
In procedure swapon: "/swapfile": No such file or directory

I think we should let guix do all the dirty work of generating the 
swapfile so we can do something like:

(swap-file 	
	(file "/swapfile"))
	(size "1G"))

And then guix will invoke the relevant file tools to create and enable 
the swap file.

We could add a check to see if the file exist and if yes try to use it 
as is.

-- 
Cheers
Swedebugia
Acknowledgement sent to swedebugia <swedebugia@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#34255; Package guix. Full text available.
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