07/07: file-systems: Prefer low-memory mode of ‘btrfs check’.

[guix-commits]

nckx pushed a commit to branch master
in repository guix.

commit e91c9ce32e6fa3a4759d83a0d7ae7d49d813668d
Author: Tobias Geerinckx-Rice <me@tobias.gr>
AuthorDate: Tue Sep 28 21:50:16 2021 +0200

    file-systems: Prefer low-memory mode of ‘btrfs check’.
    
    * gnu/build/file-systems.scm (check-btrfs-file-system):
    Add ‘--mode lowmem’ arguments when supported.
    
    Reported by Noisytoot on #guix.
---
 gnu/build/file-systems.scm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index 2a4dcd4..d8a5ddf 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -336,7 +336,10 @@ fix only those considered safe to repair automatically."
                                    ;; Upstream considers ALL repairs dangerous
                                    ;; and will warn the user at run time.
                                    (#t '("--repair"))
-                                   (_  '("--readonly"))) ; a no-op for clarity
+                                   (_  '("--readonly" ; a no-op for clarity
+                                         ;; A 466G file system with 180G used 
is
+                                         ;; enough to kill btrfs with 6G of 
RAM.
+                                         "--mode" "lowmem")))
                                ,device)))
         (0 'pass)
         (_ 'fatal-error))