Issue
Description of problem:
Running xfstest generic/020 on guest (virtiofs + nfs), I hit the below error.
```
2023-04-22 03:01:55: 10.73.75.61generic/020
2023-04-22 03:03:38: 10.73.75.61- output mismatch (see /home/xfstests-dev/results//generic/020.out.bad)
2023-04-22 03:03:38: 10.73.75.61
— tests/generic/020.out 2023-04-22 15:00:05.064139777 +0800
2023-04-22 03:03:38: 10.73.75.61
+++ /home/xfstests-dev/results//generic/020.out.bad 2023-04-22 15:03:38.020004735 +0800
2023-04-22 03:03:38: 10.73.75.61
@@ -40,7 +40,8 @@
2023-04-22 03:03:38: 10.73.75.61
2023-04-22 03:03:38: 10.73.75.61
*** add lots of attributes
2023-04-22 03:03:38: 10.73.75.61
*** check
2023-04-22 03:03:38: 10.73.75.61
-
*** MAX_ATTRS attribute(s)
2023-04-22 03:03:38: 10.73.75.61
+getfattr: /mnt/myfs1/attribute_45109: Argument list too long
2023-04-22 03:03:38: 10.73.75.61
+
*** -1 attribute(s)
2023-04-22 03:03:38: 10.73.75.61
*** remove lots of attributes
```
Version-Release number of selected component (if applicable):
qemu-kvm-8.0.0-1.el9.x86_64
virtiofsd-1.5.0-1.el9.x86_64
edk2-ovmf-20230301gitf80f052277c8-2.el9.noarch
kernel-5.14.0-300.el9.x86_64
How reproducible:
100%
Steps to Reproduce:
1. start a local nfs
```
127.0.0.1:/mnt/virtio_fs1_test_nfs on /tmp/virtio_fs1_test type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none,addr=127.0.0.1)
127.0.0.1:/mnt/virtio_fs2_test_nfs on /tmp/virtio_fs2_test type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none,addr=127.0.0.1)
```
2. start a vm with virtiofs
/usr/libexec/virtiofsd --socket-path=/var/tmp/avocado_lug62v1b/avocado-vt-vm1-fs1-virtiofsd.sock -o source=/tmp/virtio_fs1_test --xattr --modcaps=+sys_admin
3. login guest and install xfstests
setup local.config like this
```
export TEST_DEV=myfs1 && export TEST_DIR=/mnt/myfs1 && export SCRATCH_DEV=myfs2 && export SCRATCH_MNT=/mnt/myfs2 && export FSTYP=virtiofs && export FSX_AVOID="-E"
```
4. run generic/020 test in guest.
./check -virtiofs generic/020
Actual results:
Failed and the output is in above.
Expected results:
PASS
Additional info:
Run it on nfs, the result is PASS.
[root@dell-per730-38 xfstests-dev]# ./check -nfs generic/020
FSTYP
– nfs
PLATFORM
– Linux/x86_64 dell-per730-38 5.14.0-300.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Apr 17 04:33:53 EDT 2023
MKFS_OPTIONS – 127.0.0.1:/mnt/virtio_fs2_test_nfs
MOUNT_OPTIONS – -o rw,relatime,vers=4.2 127.0.0.1:/mnt/virtio_fs2_test_nfs /home/test/test2
generic/020 3s ... 3s
Ran: generic/020
Passed all 1 tests
And this issue isn't a regression, RHEL8.8 also has the same issue. see https://bugzilla.redhat.com/show_bug.cgi?id=2158092#c6
