[PATCH v1 0/3] io_tests fuse fixes

[PATCH v1 0/3] io_tests fuse fixes

[Eric Farman]

Hi,

The following are three small fixes against some of the qemu iotests
to avoid some errors that should prevent the tests from running in
the first place. We noticed these on an s390 host, but I don't
believe that to be relevant. My hunch is the messages are slightly
different based on distro, because the tests (correctly) skip for
me running Fedora on s390 or x86_64 while they fail under Ubuntu 26.04.

Eric Farman (3):
  iotests/108: skip test if cannot access /dev/fuse
  iotests/file-io-error: complete permission denied check
  iotests/fuse-mmap-shared: complete permission denied check

 tests/qemu-iotests/108                    | 2 +-
 tests/qemu-iotests/tests/file-io-error    | 3 +++
 tests/qemu-iotests/tests/fuse-mmap-shared | 7 +++++--
 3 files changed, 9 insertions(+), 3 deletions(-)

-- 
2.53.0

[PATCH v1 1/3] iotests/108: skip test if cannot access /dev/fuse

[Eric Farman]

This test might fail if the user is not root (or sudo'd):

  fusermount3: failed to open .../scratch/qcow2-file-108/fuse-export: Permission denied

A check exists to try to cover for this, but there are
two potential error messages that signal this case
(per the comment block associated with the check) and
only a skip for one of them.

Add a check for the other potential error message.

Fixes: 9ffd6d646d ("iotests/108: Test new refcount rebuild algorithm")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 tests/qemu-iotests/108 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/108 b/tests/qemu-iotests/108
index bf808b3512..136007ceaf 100755
--- a/tests/qemu-iotests/108
+++ b/tests/qemu-iotests/108
@@ -69,7 +69,7 @@ else
     # or "Invalid parameter 'fuse'", depending on whether there is
     # FUSE support or not.
     error=$($QSD --export fuse 2>&1)
-    if [[ $error = *"'fuse'"* ]]; then
+    if [[ $error = *"'fuse'"* || $error = *"'id'"* ]]; then
         _notrun 'Passwordless sudo for losetup or FUSE support required, but' \
                 'neither is available'
     fi
-- 
2.53.0

[PATCH v1 2/3] iotests/file-io-error: complete permission denied check

[Eric Farman]

As with iotests/108, there are multiple potential error messages
returned to the user. Add a 'notrun' exit for another possible
error that would otherwise cause this test to fail:

  fusermount3: failed to open TEST_DIR/fuse-export: Permission denied

Fixes: 380448464d ("tests/file-io-error: New test")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 tests/qemu-iotests/tests/file-io-error | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/qemu-iotests/tests/file-io-error b/tests/qemu-iotests/tests/file-io-error
index fb8db73b31..86f8e1b6a6 100755
--- a/tests/qemu-iotests/tests/file-io-error
+++ b/tests/qemu-iotests/tests/file-io-error
@@ -92,6 +92,9 @@ output=$(_send_qemu_cmd $QEMU_HANDLE \
 if echo "$output" | grep -q "Parameter 'type' does not accept value 'fuse'"; then
     _notrun 'No FUSE support'
 fi
+if echo "$output" | grep -q "failed to open TEST_DIR/fuse-export: Permission denied"; then
+    _notrun 'No FUSE support'
+fi
 echo "$output"
 
 echo
-- 
2.53.0

[PATCH v1 3/3] iotests/fuse-mmap-shared: complete permission denied check

[Eric Farman]

As with iotests/108, there exists multiple messages that would
signal a permission error when accessing the fuse tests:

  fusermount3: failed to open .../scratch/qcow2-file-fuse-mmap-shared/export.fuse: Permission denied

Incorporate an additional potential error message to cause the
test to be skipped rather than failed.

Fixes: ba20257d9b ("iotests: test shared mmap for fuse export")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 tests/qemu-iotests/tests/fuse-mmap-shared | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/tests/fuse-mmap-shared b/tests/qemu-iotests/tests/fuse-mmap-shared
index 52941a3bb6..faa302e4db 100755
--- a/tests/qemu-iotests/tests/fuse-mmap-shared
+++ b/tests/qemu-iotests/tests/fuse-mmap-shared
@@ -28,8 +28,11 @@ def test_fuse_support(mount_point):
     })
     test_qsd.stop()
     if 'error' in res:
-        assert (res['error']['desc'] ==
-                "Parameter 'type' does not accept value 'fuse'")
+        print(res)
+        assert ((res['error']['desc'] ==
+                "Parameter 'type' does not accept value 'fuse'") or
+                (res['error']['desc'] ==
+                "Failed to mount FUSE session to export"))
         iotests.notrun('No FUSE support')
 
 # Shared mmap when using direct IO is only supported for Linux kernels >= 6.6
-- 
2.53.0

Re: [PATCH v1 0/3] io_tests fuse fixes

[Kevin Wolf]

Am 25.07.2026 um 14:56 hat Eric Farman geschrieben:
> Hi,
> 
> The following are three small fixes against some of the qemu iotests
> to avoid some errors that should prevent the tests from running in
> the first place. We noticed these on an s390 host, but I don't
> believe that to be relevant. My hunch is the messages are slightly
> different based on distro, because the tests (correctly) skip for
> me running Fedora on s390 or x86_64 while they fail under Ubuntu 26.04.

This series conflicts with a patch from Denis Lunev I already queued:

[PATCH v2 2/3] iotests: skip FUSE tests when FUSE is not usable
https://patchew.org/QEMU/20260715103451.1930909-1-den@openvz.org/20260715103451.1930909-3-den@openvz.org/

Can you please check if this already solves some of your problems and
rebase the rest of your series on top of it?

Kevin

Re: [PATCH v1 0/3] io_tests fuse fixes

[Eric Farman]

On 7/28/26 11:05 AM, Kevin Wolf wrote:
> Am 25.07.2026 um 14:56 hat Eric Farman geschrieben:
>> Hi,
>>
>> The following are three small fixes against some of the qemu iotests
>> to avoid some errors that should prevent the tests from running in
>> the first place. We noticed these on an s390 host, but I don't
>> believe that to be relevant. My hunch is the messages are slightly
>> different based on distro, because the tests (correctly) skip for
>> me running Fedora on s390 or x86_64 while they fail under Ubuntu 26.04.
> 
> This series conflicts with a patch from Denis Lunev I already queued:
> 
> [PATCH v2 2/3] iotests: skip FUSE tests when FUSE is not usable
> https://patchew.org/QEMU/20260715103451.1930909-1-den@openvz.org/20260715103451.1930909-3-den@openvz.org/
> 
> Can you please check if this already solves some of your problems and
> rebase the rest of your series on top of it?

Ah, thanks for the pointer. That does indeed cover some of them, but not 
108. I'll send that by itself as a v2 shortly.

> 
> Kevin
>