Re: [PATCH v2 1/3] btrfs/003: fix failure on new btrfs-progs versions

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On 2022/11/10 00:44, fdmanana@xxxxxxxxxx wrote:
From: Filipe Manana <fdmanana@xxxxxxxx>

Starting with btrfs-progs version 5.19, the output of 'filesystem show'
command changed when we have a missing device. The old output was like the
following:

     Label: none  uuid: 139ef309-021f-4b98-a3a8-ce230a83b1e2
             Total devices 2 FS bytes used 128.00KiB
             devid    1 size 5.00GiB used 1.26GiB path /dev/loop0
             *** Some devices missing

While the new output (btrfs-progs 5.19+) is like the following:

     Label: none  uuid: 4a85a40b-9b79-4bde-8e52-c65a550a176b
             Total devices 2 FS bytes used 128.00KiB
             devid    1 size 5.00GiB used 1.26GiB path /dev/loop0
             devid    2 size 0 used 0 path /dev/loop1 MISSING

More specifically it happened in the following btrfs-progs commit:

     957a79c9b016 ("btrfs-progs: fi show: print missing device for a mounted file system")

This is making btrfs/003 fail with btrfs-progs 5.19+. Update the grep
filter in btrfs/003 so that it works with both output formats.

Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>

Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>

After more digging, it shows that the test case itself will skip non-deletable disks, thus it doesn't cover my LVM based test environment at all.

Thanks,
Qu

---
  tests/btrfs/003 | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/btrfs/003 b/tests/btrfs/003
index cf605730..fae6d9d1 100755
--- a/tests/btrfs/003
+++ b/tests/btrfs/003
@@ -141,8 +141,9 @@ _test_replace()
  	_devmgt_remove ${removed_dev_htl} $ds
  	dev_removed=1
- $BTRFS_UTIL_PROG filesystem show $SCRATCH_DEV | grep "Some devices missing" >> $seqres.full || _fail \
-							"btrfs did not report device missing"
+	$BTRFS_UTIL_PROG filesystem show $SCRATCH_DEV | \
+		grep -ie '\bmissing\b' >> $seqres.full || \
+		_fail "btrfs did not report device missing"
# add a new disk to btrfs
  	ds=${devs[@]:$(($n)):1}



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