GNU bug report logs - #39774
guix incorrectly says "No space left on device"

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Jesse Gibbons <jgibbons2357 <at> gmail.com>
To: bug-guix <at> gnu.org
Subject: guix incorrectly says "No space left on device"
Date: Mon, 24 Feb 2020 20:01:45 -0700

I have a laptop with two drives. A few days ago, when I ran `df -h` it
outputs:
Filesystem      Size  Used Avail Use% Mounted on
none             16G     0   16G   0% /dev
/dev/sdb1       229G  189G   29G  87% /
/dev/sda1       458G  136G  299G  32% /gnu/store
tmpfs            16G     0   16G   0% /dev/shm
none             16G   64K   16G   1% /run/systemd
none             16G     0   16G   0% /run/user
cgroup           16G     0   16G   0% /sys/fs/cgroup
tmpfs           3.2G   16K  3.2G   1% /run/user/983
tmpfs           3.2G   60K  3.2G   1% /run/user/1001

As you can see, /dev/sda1 is the drive mounted on /gnu/store.
Everything in the store is written to it, and it has plenty of space
available.

Guix sometimes says there is "No space left on device". This always
happens in particular when I try `guix gc --optimize`, but it sometimes
happens when I call `guix pull` or `guix upgrade`. When guix pull or
guix upgrade fails with this message, I can clear up more space by
deleting ~/.cache and emtpying my trash and it works.


Today I have also seen this happen when I'm trying to upgrade a large
profile. It said it could not build anything because there was no more
disk space, even after I cleaned up /dev/sdb1 to 40% use. It finally
recognized the empty disk space when I called guix gc and it deleted a
few of the dependencies needed for the upgrades. But it didn't take
long to trigger this bug again. Here's the new output of `df -h`:

Filesystem      Size  Used Avail Use% Mounted on
none             16G     0   16G   0% /dev
/dev/sdb1       229G   86G  131G  40% /
/dev/sda1       458G  182G  253G  42% /gnu/store
tmpfs            16G     0   16G   0% /dev/shm
none             16G   80K   16G   1% /run/systemd
none             16G     0   16G   0% /run/user
cgroup           16G     0   16G   0% /sys/fs/cgroup
tmpfs           3.2G   24K  3.2G   1% /run/user/983
tmpfs           3.2G   12K  3.2G   1% /run/user/1000
tmpfs           3.2G   60K  3.2G   1% /run/user/1001

Any clues why this happens and what can be done to fix it? Could it be
related to how /dev/sdb1 is 229G large, and the total used space in /
and /gnu/store is more than that?

-Jesse

Message #8 received at 39774 <at> debbugs.gnu.org (full text, mbox):

From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: 39774 <at> debbugs.gnu.org
Subject: Re: bug#39774: guix says "No space left on device"
Date: Tue, 25 Feb 2020 07:15:47 +0100

[Message part 1 (text/plain, inline)]

Jesse,

Are you sure Guix is incorrect?

 $ df -i / /gnu/store

If you're (almost) out of inodes on either, you'll have to delete 
some files.

In which case you can thank Unix for -ENOSPC meaning ‘you're out 
of something; I won't tell you what’, but perhaps Guix could work 
around its flaws by doing our own stat() and displaying a hint. 
We already warn about low storage space.  It makes sense to do the 
same about inodes.

Kind regards,

T G-R

[signature.asc (application/pgp-signature, inline)]

Message #11 received at 39774 <at> debbugs.gnu.org (full text, mbox):

From: Julien Lepiller <julien <at> lepiller.eu>
To: Jesse Gibbons <jgibbons2357 <at> gmail.com>,39774 <at> debbugs.gnu.org
Subject: Re: bug#39774: guix incorrectly says "No space left on device"
Date: Mon, 24 Feb 2020 22:15:10 -0500

Le 24 février 2020 22:01:45 GMT-05:00, Jesse Gibbons <jgibbons2357 <at> gmail.com> a écrit :
>I have a laptop with two drives. A few days ago, when I ran `df -h` it
>outputs:
>Filesystem      Size  Used Avail Use% Mounted on
>none             16G     0   16G   0% /dev
>/dev/sdb1       229G  189G   29G  87% /
>/dev/sda1       458G  136G  299G  32% /gnu/store
>tmpfs            16G     0   16G   0% /dev/shm
>none             16G   64K   16G   1% /run/systemd
>none             16G     0   16G   0% /run/user
>cgroup           16G     0   16G   0% /sys/fs/cgroup
>tmpfs           3.2G   16K  3.2G   1% /run/user/983
>tmpfs           3.2G   60K  3.2G   1% /run/user/1001
>
>As you can see, /dev/sda1 is the drive mounted on /gnu/store.
>Everything in the store is written to it, and it has plenty of space
>available.
>
>Guix sometimes says there is "No space left on device". This always
>happens in particular when I try `guix gc --optimize`, but it sometimes
>happens when I call `guix pull` or `guix upgrade`. When guix pull or
>guix upgrade fails with this message, I can clear up more space by
>deleting ~/.cache and emtpying my trash and it works.
>
>
>Today I have also seen this happen when I'm trying to upgrade a large
>profile. It said it could not build anything because there was no more
>disk space, even after I cleaned up /dev/sdb1 to 40% use. It finally
>recognized the empty disk space when I called guix gc and it deleted a
>few of the dependencies needed for the upgrades. But it didn't take
>long to trigger this bug again. Here's the new output of `df -h`:
>
>Filesystem      Size  Used Avail Use% Mounted on
>none             16G     0   16G   0% /dev
>/dev/sdb1       229G   86G  131G  40% /
>/dev/sda1       458G  182G  253G  42% /gnu/store
>tmpfs            16G     0   16G   0% /dev/shm
>none             16G   80K   16G   1% /run/systemd
>none             16G     0   16G   0% /run/user
>cgroup           16G     0   16G   0% /sys/fs/cgroup
>tmpfs           3.2G   24K  3.2G   1% /run/user/983
>tmpfs           3.2G   12K  3.2G   1% /run/user/1000
>tmpfs           3.2G   60K  3.2G   1% /run/user/1001
>
>Any clues why this happens and what can be done to fix it? Could it be
>related to how /dev/sdb1 is 229G large, and the total used space in /
>and /gnu/store is more than that?
>
>-Jesse

There could be two explanations: you've run out of inodes or the filesystem that was out of space is not the one you think (maybe it was during a build and your /tmp is a tmpfs?). Try `df -i`.

Message #14 received at 39774 <at> debbugs.gnu.org (full text, mbox):

From: Jesse Gibbons <jgibbons2357 <at> gmail.com>
To: Julien Lepiller <julien <at> lepiller.eu>, 39774 <at> debbugs.gnu.org
Subject: Re: bug#39774: guix incorrectly says "No space left on device"
Date: Tue, 25 Feb 2020 07:59:05 -0700

On Mon, 2020-02-24 at 22:15 -0500, Julien Lepiller wrote:
> Le 24 février 2020 22:01:45 GMT-05:00, Jesse Gibbons <
> jgibbons2357 <at> gmail.com> a écrit :
> > I have a laptop with two drives. A few days ago, when I ran `df -h`
> > it
> > outputs:
> > Filesystem      Size  Used Avail Use% Mounted on
> > none             16G     0   16G   0% /dev
> > /dev/sdb1       229G  189G   29G  87% /
> > /dev/sda1       458G  136G  299G  32% /gnu/store
> > tmpfs            16G     0   16G   0% /dev/shm
> > none             16G   64K   16G   1% /run/systemd
> > none             16G     0   16G   0% /run/user
> > cgroup           16G     0   16G   0% /sys/fs/cgroup
> > tmpfs           3.2G   16K  3.2G   1% /run/user/983
> > tmpfs           3.2G   60K  3.2G   1% /run/user/1001
> > 
> > As you can see, /dev/sda1 is the drive mounted on /gnu/store.
> > Everything in the store is written to it, and it has plenty of
> > space
> > available.
> > 
> > Guix sometimes says there is "No space left on device". This always
> > happens in particular when I try `guix gc --optimize`, but it
> > sometimes
> > happens when I call `guix pull` or `guix upgrade`. When guix pull
> > or
> > guix upgrade fails with this message, I can clear up more space by
> > deleting ~/.cache and emtpying my trash and it works.
> > 
> > 
> > Today I have also seen this happen when I'm trying to upgrade a
> > large
> > profile. It said it could not build anything because there was no
> > more
> > disk space, even after I cleaned up /dev/sdb1 to 40% use. It
> > finally
> > recognized the empty disk space when I called guix gc and it
> > deleted a
> > few of the dependencies needed for the upgrades. But it didn't take
> > long to trigger this bug again. Here's the new output of `df -h`:
> > 
> > Filesystem      Size  Used Avail Use% Mounted on
> > none             16G     0   16G   0% /dev
> > /dev/sdb1       229G   86G  131G  40% /
> > /dev/sda1       458G  182G  253G  42% /gnu/store
> > tmpfs            16G     0   16G   0% /dev/shm
> > none             16G   80K   16G   1% /run/systemd
> > none             16G     0   16G   0% /run/user
> > cgroup           16G     0   16G   0% /sys/fs/cgroup
> > tmpfs           3.2G   24K  3.2G   1% /run/user/983
> > tmpfs           3.2G   12K  3.2G   1% /run/user/1000
> > tmpfs           3.2G   60K  3.2G   1% /run/user/1001
> > 
> > Any clues why this happens and what can be done to fix it? Could it
> > be
> > related to how /dev/sdb1 is 229G large, and the total used space in
> > /
> > and /gnu/store is more than that?
> > 
> > -Jesse
> 
> There could be two explanations: you've run out of inodes or the
> filesystem that was out of space is not the one you think (maybe it
> was during a build and your /tmp is a tmpfs?). Try `df -i`.
~$ df -ih
Filesystem     Inodes IUsed IFree IUse% Mounted on
none             4.0M   525  4.0M    1% /dev
/dev/sdb1         15M   77K   15M    1% /
/dev/sda1         30M   29M 1015K   97% /gnu/store
tmpfs            4.0M     1  4.0M    1% /dev/shm
none             4.0M    47  4.0M    1% /run/systemd
none             4.0M     4  4.0M    1% /run/user
cgroup           4.0M    11  4.0M    1% /sys/fs/cgroup
tmpfs            4.0M    13  4.0M    1% /run/user/983
tmpfs            4.0M    24  4.0M    1% /run/user/1001
tmpfs            4.0M     1  4.0M    1% /run/user/1000

That makes sense now. /dev/sda1 (mounted on /gnu/store) was out of
inodes. Is there a way to increase the maximum number of inodes a
partition can use? Or perhaps divide the store among multiple
partitions? 

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