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Don't allocate 1 GB of memory to create a file

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bs=1G means "read 1GB into memory at a time"; we really
don't need that.

On a system with 6GB physical memory (while our test VM is
configured to have 8 GB of virtual RAM), this seems to result
in trashing and exceeding the 30s timeout, while with a
smaller block size, the copy happens in <13 seconds. (dd itself
reports 11 s vs. 27 s).

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
This commit is contained in:
Miloslav Trmač 2026-08-21 22:30:38 +02:00
parent 9774d5338e
commit e5d2869e41
1 changed files with 1 additions and 1 deletions
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2
test/e2e/build_test.go
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@ -698,7 +698,7 @@ subdir**`
Expect(os.WriteFile(filepath.Join(subdirPath, "extra"), contents.Bytes(), 0o644)).
ToNot(HaveOccurred())
randomFile := filepath.Join(subdirPath, "randomFile")
dd := exec.Command("dd", "if=/dev/urandom", "of="+randomFile, "bs=1G", "count=1")
dd := exec.Command("dd", "if=/dev/urandom", "of="+randomFile, "bs=1M", "count=1024")
ddSession, err := Start(dd, GinkgoWriter, GinkgoWriter)
Expect(err).ToNot(HaveOccurred())
Eventually(ddSession, "30s", "1s").Should(Exit(0))