[OE-core][PATCH] tar: skip sparse05 ptest which needs ~10 GiB of disk

[OE-core][PATCH] tar: skip sparse05 ptest which needs ~10 GiB of disk

[Enzo Frese]

The "listing sparse files bigger than 2^33 B" test (sparse05) generates
a file with 1000 data fragments of 10 MiB each, i.e. about 10 GiB of
real data, which cannot fit in the ptest image (1.4 GB rootfs).

Normally genfile fails with ENOSPC and the test is reported as skipped,
but the filesystem stays full until the test directory is cleaned up.
When the autotest bookkeeping (status files, mkdir for the next test
group) hits that window, the test is reported as FAIL and the next test
cannot even start, matching the intermittent autobuilder failure.

Skip sparse05 explicitly and print the available disk space at the
start of the run to make similar failures easier to diagnose.

Tested on qemux86-64 with musl: 200 tests passed, 46 skipped, 0 failed,
no ENOSPC errors.

[YOCTO #16419]

Signed-off-by: Enzo Frese <freseenzo@gmail.com>
---
 meta/recipes-extended/tar/tar/run-ptest | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-extended/tar/tar/run-ptest b/meta/recipes-extended/tar/tar/run-ptest
index b4ccbbcb46..b5aa80ddab 100644
--- a/meta/recipes-extended/tar/tar/run-ptest
+++ b/meta/recipes-extended/tar/tar/run-ptest
@@ -5,4 +5,14 @@ cd @PTEST_PATH@/tests/
 # Clear old data
 rm -rf testsuite.dir testsuite.log
 
-./testsuite --am-fmt
+# Report free space: the sparse tests create multi-GB files and the
+# ptest image is small, so this helps diagnose ENOSPC failures.
+df -h .
+
+# sparse05 (listing sparse files bigger than 2^33 B) writes ~10 GiB of
+# real data (1000 fragments of 10 MiB each), which cannot fit in the
+# ptest image. When genfile hits ENOSPC the test is normally reported
+# as skipped, but the filesystem is left full for a moment and the
+# autotest bookkeeping (status files, mkdir of the next test group)
+# intermittently fails instead, taking the next test down with it.
+./testsuite --am-fmt -k '!sparse05'
-- 
2.43.0