apteryx pushed a commit to branch master
in repository guix.
commit ca8a0f4d1bca745f34c5b8120b9f346eee79ff14
Author: Maxim Cournoyer <[email protected]>
AuthorDate: Wed Apr 30 16:23:52 2025 +0900
image: Honor parallel job count for the number of qemu-img co-routines used.
This doesn't seem to change anything currently (the default is 8). Perhaps
useful in the future, for example if the compressor used by qemu-img starts
honoring it.
* gnu/build/image.scm (convert-disk-image): Specify the '-m' option.
Change-Id: Ia288c85af8a0621d61cf6b9f0d3f73f5a3026d66
---
gnu/build/image.scm | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/gnu/build/image.scm b/gnu/build/image.scm
index 2332b72b17..e6cc2d0640 100644
--- a/gnu/build/image.scm
+++ b/gnu/build/image.scm
@@ -178,7 +178,10 @@ ROOT directory to populate the image."
(case format
((compressed-qcow2)
(invoke "qemu-img" "convert" "-c" "-f" "raw"
- "-O" "qcow2" image output))
+ ;; The maximum number of co-routines is 16.
+ "-m" (number->string (min 16 (parallel-job-count)))
+ "-O" "qcow2"
+ image output))
(else
(copy-file image output))))
