[PATCH] fstests: Add 9p network filesystem support

Tuomas Tynkkynen
2017-12-12T17:12:12Z

This commit adds support for the 9p network file system, which is mainly
used by QEMU for sharing a file system from the host to the guest VM.

To run xfstests on it, launch QEMU with e.g.:

-virtfs local,path=$TMPDIR/p9-test,security_model=mapped-xattr,mount_tag=p9-test
-virtfs local,path=$TMPDIR/p9-scratch,security_model=mapped-xattr,mount_tag=p9-scratch

and inside the VM run xfstests with:

export TEST_DEV=p9-test
export SCRATCH_DEV=p9-scratch
export MOUNT_OPTIONS="-o trans=virtio,version=9p2000.L,cache=loose,posixacl"
export TEST_FS_MOUNT_OPTS="$MOUNT_OPTIONS"

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
---
check | 2 ++
common/attr | 4 ++--
common/config | 3 +++
common/rc | 32 +++++++++++++++++++++++++++++++-
4 files changed, 38 insertions(+), 3 deletions(-)

diff --git check check
index f8db3cd6..6078b1ef 100755
--- check
+++ check
@@ -67,6 +67,7 @@ check options
-nfs test NFS
-glusterfs test GlusterFS
-cifs test CIFS
+ -9p test 9p
-overlay test overlay
-pvfs2 test PVFS2
-tmpfs test TMPFS
@@ -265,6 +266,7 @@ while [ $# -gt 0 ]; do
-nfs) FSTYP=nfs ;;
-glusterfs) FSTYP=glusterfs ;;
-cifs) FSTYP=cifs ;;
+ -9p) FSTYP=9p ;;
-overlay) FSTYP=overlay; export OVERLAY=true ;;
-pvfs2) FSTYP=pvfs2 ;;
-tmpfs) FSTYP=tmpfs ;;
diff --git common/attr common/attr
index 8a5c9eac..66b0227f 100644
--- common/attr
+++ common/attr
@@ -243,7 +243,7 @@ _sort_getfattr_output()

# set maximum total attr space based on fs type
case "$FSTYP" in
-xfs|udf|pvfs2|ceph)
+xfs|udf|pvfs2|9p|ceph)
MAX_ATTRS=1000
;;
*)
@@ -263,7 +263,7 @@ xfs|udf|btrfs)
pvfs2)
MAX_ATTRVAL_SIZE=8192
;;
-ceph)
+9p|ceph)
MAX_ATTRVAL_SIZE=65536
;;
*)
diff --git common/config common/config
index d0fbfe55..5e4a73ed 100644
--- common/config
+++ common/config
@@ -459,6 +459,9 @@ _check_device()
fi

case "$FSTYP" in
+ 9p)
+ # 9p mount tags are just plain strings, so anything is allowed
+ ;;
overlay)
if [ ! -d "$dev" ]; then
_fatal "common/config: $name ($dev) is not a directory for overlay"
diff --git common/rc common/rc
index 4c053a53..0d2da68c 100644
--- common/rc
+++ common/rc
@@ -166,6 +166,8 @@ case "$FSTYP" in
;;
cifs)
;;
+ 9p)
+ ;;
ceph)
;;
glusterfs)
@@ -578,6 +580,9 @@ _test_mkfs()
cifs)
# do nothing for cifs
;;
+ 9p)
+ # do nothing for 9p
+ ;;
ceph)
# do nothing for ceph
;;
@@ -612,6 +617,9 @@ _mkfs_dev()
nfs*)
# do nothing for nfs
;;
+ 9p)
+ # do nothing for 9p
+ ;;
overlay)
# do nothing for overlay
;;
@@ -676,7 +684,7 @@ _scratch_mkfs()
local mkfs_status

case $FSTYP in
- nfs*|cifs|ceph|overlay|glusterfs|pvfs2)
+ nfs*|cifs|ceph|overlay|glusterfs|pvfs2|9p)
# unable to re-create this fstyp, just remove all files in
# $SCRATCH_MNT to avoid EEXIST caused by the leftover files
# created in previous runs
@@ -1448,6 +1456,14 @@ _require_scratch_nocheck()
_notrun "this test requires a valid \$SCRATCH_MNT"
fi
;;
+ 9p)
+ if [ -z "$SCRATCH_DEV" ]; then
+ _notrun "this test requires a valid \$SCRATCH_DEV"
+ fi
+ if [ ! -d "$SCRATCH_MNT" ]; then
+ _notrun "this test requires a valid \$SCRATCH_MNT"
+ fi
+ ;;
nfs*|ceph)
echo $SCRATCH_DEV | grep -q ":/" > /dev/null 2>&1
if [ -z "$SCRATCH_DEV" -o "$?" != "0" ]; then
@@ -1554,6 +1570,14 @@ _require_test()
_notrun "this test requires a valid \$TEST_DIR"
fi
;;
+ 9p)
+ if [ -z "$TEST_DEV" ]; then
+ _notrun "this test requires a valid \$TEST_DEV"
+ fi
+ if [ ! -d "$TEST_DIR" ]; then
+ _notrun "this test requires a valid \$TEST_DIR"
+ fi
+ ;;
nfs*|ceph)
echo $TEST_DEV | grep -q ":/" > /dev/null 2>&1
if [ -z "$TEST_DEV" -o "$?" != "0" ]; then
@@ -2500,6 +2524,9 @@ _check_test_fs()
cifs)
# no way to check consistency for cifs
;;
+ 9p)
+ # no way to check consistency for 9p
+ ;;
ceph)
# no way to check consistency for CephFS
;;
@@ -2555,6 +2582,9 @@ _check_scratch_fs()
cifs)
# Don't know how to check a CIFS filesystem, yet.
;;
+ 9p)
+ # no way to check consistency for 9p
+ ;;
ceph)
# no way to check consistency for CephFS
;;
--
2.15.0