GNU bug report logs - #50327
[PATCH 0/2] Improved ‘free disk space’ message + a question

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

From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: guix-patches <at> gnu.org
Subject: [PATCH 0/2] Improved ‘free disk space’ message + a question
Date: Wed, 01 Sep 2021 21:05:42 +0200

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

Guix,

This improves the warning given when free space looks sus.

From:

 note: build failure may have been caused by lack of free disk 
 space

to:

 note: only 0.01 MiB available in ‘/gnu/store’
 note: only 5.00 MiB available in ‘/tmp/guix-build-foo.drv-0’
 note: build failure may have been caused by lack of free disk 
 space

It also raises the warning threshold from 8 to 64 MiB, which is a 
much prettier arbitrary integer.

Question: shouldn't all of nix/ have licence headers added too? 
As it stands, there are two very lonely ones in 
nix/libstore/builtins.{cc,hh} and that's it.

Kind regards,

T G-R

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Message #8 received at 50327 <at> debbugs.gnu.org (full text, mbox):

From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: 50327 <at> debbugs.gnu.org
Subject: [PATCH 1/2] daemon: Print which disk(s) are how full.
Date: Wed,  1 Sep 2021 21:25:44 +0200

* nix/libstore/build.cc (pathFull): New function.
(DerivationGoal::buildDone): Use it.
---
 nix/libstore/build.cc | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index 5697ae5a43..963cddb98b 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -1297,6 +1297,25 @@ void replaceValidPath(const Path & storePath, const Path tmpPath)
         deletePath(oldPath);
 }
 
+static bool pathFull(Path path)
+{
+#if HAVE_STATVFS
+    unsigned long long required = 8ULL * 1024 * 1024; // FIXME: make configurable
+    struct statvfs st;
+
+    if (statvfs(path.c_str(), &st) == 0) {
+        unsigned long long free = (unsigned long long) st.f_bavail * st.f_bsize;
+        if (free < required) {
+            printMsg(lvlError, format("note: only %1$.2f MiB available in ‘%2%’")
+                                      % (free / (1024.0 * 1024.0)) % path);
+            return true;
+        }
+    }
+#endif
+
+    return false;
+}
+
 
 MakeError(NotDeterministic, BuildError)
 
@@ -1355,16 +1374,10 @@ void DerivationGoal::buildDone()
                of knowing whether the build actually got an ENOSPC.
                So instead, check if the disk is (nearly) full now.  If
                so, we don't mark this build as a permanent failure. */
-#if HAVE_STATVFS
-            unsigned long long required = 8ULL * 1024 * 1024; // FIXME: make configurable
-            struct statvfs st;
-            if (statvfs(settings.nixStore.c_str(), &st) == 0 &&
-                (unsigned long long) st.f_bavail * st.f_bsize < required)
+            if (pathFull(settings.nixStore))
                 diskFull = true;
-            if (statvfs(tmpDir.c_str(), &st) == 0 &&
-                (unsigned long long) st.f_bavail * st.f_bsize < required)
+            if (pathFull(tmpDir))
                 diskFull = true;
-#endif
 
             deleteTmpDir(false);
 
-- 
2.32.0

Message #11 received at 50327 <at> debbugs.gnu.org (full text, mbox):

From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: 50327 <at> debbugs.gnu.org
Subject: [PATCH 2/2] daemon: Suspect low disk space sooner.
Date: Wed,  1 Sep 2021 21:25:45 +0200

* nix/libstore/build.cc (pathFull): Bump the required free space up to
a more 2021 amount of 64 MiB.
---
 nix/libstore/build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index 963cddb98b..f62704a107 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -1300,7 +1300,7 @@ void replaceValidPath(const Path & storePath, const Path tmpPath)
 static bool pathFull(Path path)
 {
 #if HAVE_STATVFS
-    unsigned long long required = 8ULL * 1024 * 1024; // FIXME: make configurable
+    unsigned long long required = 64ULL * 1024 * 1024; // FIXME: make configurable
     struct statvfs st;
 
     if (statvfs(path.c_str(), &st) == 0) {
-- 
2.32.0

Message #14 received at 50327 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Tobias Geerinckx-Rice <me <at> tobias.gr>
Cc: 50327 <at> debbugs.gnu.org
Subject: Re: bug#50327: [PATCH 0/2] Improved ‘free disk
 space’ message + a question
Date: Sat, 18 Sep 2021 11:53:21 +0200

Tobias Geerinckx-Rice <me <at> tobias.gr> skribis:

> * nix/libstore/build.cc (pathFull): New function.
> (DerivationGoal::buildDone): Use it.

I’d call it ‘directoryFull’ or ‘partitionFull’.  Otherwise LGTM!

Ludo’.

Message #17 received at 50327 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Tobias Geerinckx-Rice <me <at> tobias.gr>
Cc: 50327 <at> debbugs.gnu.org
Subject: Re: bug#50327: [PATCH 0/2] Improved ‘free disk
 space’ message + a question
Date: Sat, 18 Sep 2021 11:55:06 +0200

Hi,

Tobias Geerinckx-Rice <me <at> tobias.gr> skribis:

> This improves the warning given when free space looks sus.
>
> From:
>
>  note: build failure may have been caused by lack of free disk   space
>
> to:
>
>  note: only 0.01 MiB available in ‘/gnu/store’
>  note: only 5.00 MiB available in ‘/tmp/guix-build-foo.drv-0’
>  note: build failure may have been caused by lack of free disk   space
>
> It also raises the warning threshold from 8 to 64 MiB, which is a much
> prettier arbitrary integer.

LGTM.  :-)

Eventually we should i18n messages coming from the daemon.

> Question: shouldn't all of nix/ have licence headers added too? As it
> stands, there are two very lonely ones in
> nix/libstore/builtins.{cc,hh} and that's it.

Yeah well, they were taken as-is from Nix.  I wouldn’t bother,
especially since we wouldn’t what copyright holders to list in there.

Thanks!

Ludo’.

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