Re: [Qemu-devel] [PATCHv8 0/5] block: add native support for NFS

[Stefan Hajnoczi]

On Fri, Jan 31, 2014 at 12:38:48PM +0100, Peter Lieven wrote:
> This adds v6 of the NFS protocol driver + qemu-iotest adjustments.
> 
> v7->v8:
>  - bump libnfs requirement to 1.9.2
>  - renamed NFSRPC->status to NFSRPC->ret [Benoit]
>  - avoid double invocation of nfs_client_close in nfs_file_create [Benoit]
>  - fixed error propagation in nfs_file_open [Benoit]

I was able to create a qcow2 image and boot a VM successfully over NFS.

I'm getting qemu-iotests failures:
$ ./check -nfs -qcow2
071 1s ... - output mismatch (see 071.out.bad)
--- 071.out     2014-01-31 13:14:07.066452661 +0100
+++ 071.out.bad 2014-01-31 16:41:52.824898587 +0100
@@ -4,29 +4,19 @@
 
 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864 
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 
-read 512/512 bytes at offset 0
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-wrote 512/512 bytes at offset 229376
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 512/512 bytes at offset 229376
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io: can't open device 
nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2: Could 
not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2.base': 
No such file or directory
 wrote 512/512 bytes at offset 0
 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-blkverify: read sector_num=0 nb_sectors=4 contents mismatch in sector 0
+qemu-io: can't open device 
nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2: Could 
not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2.base': 
No such file or directory
 
 === Testing blkverify through file blockref ===
 
 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864 
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 
-read 512/512 bytes at offset 0
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-wrote 512/512 bytes at offset 229376
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 512/512 bytes at offset 229376
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io: can't open device (null): Could not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2.base': 
No such file or directory
 wrote 512/512 bytes at offset 0
 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-blkverify: read sector_num=0 nb_sectors=4 contents mismatch in sector 0
+qemu-io: can't open device 
nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2: Could 
not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2.base': 
No such file or directory
 
 === Testing blkdebug through filename ===
 
@@ -34,7 +24,7 @@
 
 === Testing blkdebug through file blockref ===
 
-read failed: Input/output error
+qemu-io: can't open device (null): Could not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2': No 
such file or directory
 
 === Testing blkdebug on existing block device ===
 
@@ -55,8 +45,12 @@
 Testing: -drive file=TEST_DIR/t.IMGFMT,format=IMGFMT,if=none,id=drive0
 QMP_VERSION
 {"return": {}}
+{"error": {"class": "GenericError", "desc": "could not open disk image 
drive0-verify: Could not open 'TEST_DIR/t.qcow2.base': No such file or 
directory"}}
+{"return": "Device 'drive0-verify' not found\r\n"}
 {"return": {}}
-blkverify: read sector_num=0 nb_sectors=1 contents mismatch in sector 0
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"SHUTDOWN"}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"DEVICE_TRAY_MOVED", "data": {"device": "ide1-cd0", "tray-open": true}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"DEVICE_TRAY_MOVED", "data": {"device": "floppy0", "tray-open": true}}
 
 
 === Testing blkverify on existing raw block device ===
@@ -64,8 +58,12 @@
 Testing: -drive file=TEST_DIR/t.IMGFMT.base,if=none,id=drive0
 QMP_VERSION
 {"return": {}}
+{"error": {"class": "GenericError", "desc": "could not open disk image 
drive0-verify: Could not open 'TEST_DIR/t.qcow2': No such file or directory"}}
+{"return": "Device 'drive0-verify' not found\r\n"}
 {"return": {}}
-blkverify: read sector_num=0 nb_sectors=1 contents mismatch in sector 0
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"SHUTDOWN"}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"DEVICE_TRAY_MOVED", "data": {"device": "ide1-cd0", "tray-open": true}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"DEVICE_TRAY_MOVED", "data": {"device": "floppy0", "tray-open": true}}
 
 
 === Testing blkdebug's set-state through QMP ===
072 1s ... - output mismatch (see 072.out.bad)
--- 072.out     2014-01-31 13:14:07.066452661 +0100
+++ 072.out.bad 2014-01-31 16:41:53.285899409 +0100
@@ -9,12 +9,7 @@
 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 wrote 512/512 bytes at offset 1024
 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 512/512 bytes at offset 0
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 512/512 bytes at offset 512
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 512/512 bytes at offset 1024
-512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io: can't open device (null): Could not open 
'nfs://127.0.0.1//home/stefanha/qemu/tests/qemu-iotests/scratch/t.qcow2': No 
such file or directory
 Pattern verification failed at offset 0, 512 bytes
 read 512/512 bytes at offset 0
 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)