file-posix: Include filename in locking error message

Image locking errors happening at device initialization time doesn't say
which file cannot be locked, for instance,

    -device scsi-disk,drive=drive-1: Failed to get shared "write" lock
    Is another process using the image?

could refer to either the overlay image or its backing image.

Hoist the error_append_hint to the caller of raw_check_lock_bytes where
file name is known, and include it in the error hint.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/block/file-posix.c b/block/file-posix.c
index fe83cbf0eb430bfa2293045949eb2c30b44b9862..327f39ca452d70d2a98d941656f6f57d26b12eb2 100644 (file)
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -741,8 +741,6 @@ static int raw_check_lock_bytes(int fd, uint64_t perm, uint64_t shared_perm,
                            "Failed to get \"%s\" lock",
                            perm_name);
                 g_free(perm_name);
-                error_append_hint(errp,
-                                  "Is another process using the image?\n");
                 return ret;
             }
         }
@@ -758,8 +756,6 @@ static int raw_check_lock_bytes(int fd, uint64_t perm, uint64_t shared_perm,
                            "Failed to get shared \"%s\" lock",
                            perm_name);
                 g_free(perm_name);
-                error_append_hint(errp,
-                                  "Is another process using the image?\n");
                 return ret;
             }
         }
@@ -796,6 +792,9 @@ static int raw_handle_perm_lock(BlockDriverState *bs,
             if (!ret) {
                 return 0;
             }
+            error_append_hint(errp,
+                              "Is another process using the image [%s]?\n",
+                              bs->filename);
         }
         op = RAW_PL_ABORT;
         /* fall through to unlock bytes. */
@@ -2217,6 +2216,9 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
     /* Step two: Check that nobody else has taken conflicting locks */
     result = raw_check_lock_bytes(fd, perm, shared, errp);
     if (result < 0) {
+        error_append_hint(errp,
+                          "Is another process using the image [%s]?\n",
+                          file_opts->filename);
         goto out_unlock;
     }
 

diff --git a/tests/qemu-iotests/153.out b/tests/qemu-iotests/153.out
index 93eaf1048698955d00bff51781b208b090722aa7..884254868caa7524f981c8556e5253b260f7c7fe 100644 (file)
--- a/tests/qemu-iotests/153.out
+++ b/tests/qemu-iotests/153.out
@@ -12,11 +12,11 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=33554432 backing_file=TEST_DIR/t
 
 == Launching another QEMU, opts: '' ==
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Launching another QEMU, opts: 'read-only=on' ==
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,read-only=on: Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Launching another QEMU, opts: 'read-only=on,force-share=on' ==
 
@@ -24,77 +24,77 @@ Is another process using the image?
 
 _qemu_io_wrapper -c read 0 512 TEST_DIR/t.qcow2
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_io_wrapper -r -c read 0 512 TEST_DIR/t.qcow2
 can't open device TEST_DIR/t.qcow2: Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_io_wrapper -c open  TEST_DIR/t.qcow2 -c read 0 512
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 no file open, try 'help open'
 
 _qemu_io_wrapper -c open -r  TEST_DIR/t.qcow2 -c read 0 512
 can't open device TEST_DIR/t.qcow2: Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 no file open, try 'help open'
 
 _qemu_img_wrapper info TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper check TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper compare TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper map TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper amend -o  TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper commit TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper resize TEST_DIR/t.qcow2 32M
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper rebase TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper snapshot -l TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper convert TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.convert
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper dd if=TEST_DIR/t.qcow2 of=TEST_DIR/t.qcow2.convert bs=512 count=1
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper bench -c 1 TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper bench -w -c 1 TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper create -f qcow2 TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 file format: IMGFMT
 
 == Running utility commands -U ==
@@ -132,7 +132,7 @@ Try 'qemu-img --help' for more information
 
 _qemu_img_wrapper rebase -U TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper snapshot -l -U TEST_DIR/t.qcow2
 
@@ -157,7 +157,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=33554432 backing_file=TEST_DIR/t
 
 == Launching another QEMU, opts: '' ==
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Launching another QEMU, opts: 'read-only=on' ==
 
@@ -167,13 +167,13 @@ Is another process using the image?
 
 _qemu_io_wrapper -c read 0 512 TEST_DIR/t.qcow2
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_io_wrapper -r -c read 0 512 TEST_DIR/t.qcow2
 
 _qemu_io_wrapper -c open  TEST_DIR/t.qcow2 -c read 0 512
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 no file open, try 'help open'
 
 _qemu_io_wrapper -c open -r  TEST_DIR/t.qcow2 -c read 0 512
@@ -188,19 +188,19 @@ _qemu_img_wrapper map TEST_DIR/t.qcow2
 
 _qemu_img_wrapper amend -o  TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper commit TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper resize TEST_DIR/t.qcow2 32M
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper rebase TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper snapshot -l TEST_DIR/t.qcow2
 
@@ -212,11 +212,11 @@ _qemu_img_wrapper bench -c 1 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper bench -w -c 1 TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper create -f qcow2 TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 file format: IMGFMT
 
 == Running utility commands -U ==
@@ -254,7 +254,7 @@ Try 'qemu-img --help' for more information
 
 _qemu_img_wrapper rebase -U TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 _qemu_img_wrapper snapshot -l -U TEST_DIR/t.qcow2
 
@@ -372,17 +372,17 @@ Round done
 
 == Two devices with the same image (read-only=off - read-only=off) ==
 QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,read-only=off: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Two devices with the same image (read-only=off - read-only=on) ==
 QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,read-only=on: Failed to get shared "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Two devices with the same image (read-only=off - read-only=on,force-share=on) ==
 
 == Two devices with the same image (read-only=on - read-only=off) ==
 QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,read-only=off: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Two devices with the same image (read-only=on - read-only=on) ==
 
@@ -403,13 +403,13 @@ Formatting 'TEST_DIR/t.IMGFMT.c', fmt=IMGFMT size=33554432 backing_file=TEST_DIR
 
 == Backing image also as an active device ==
 QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Backing image also as an active device (ro) ==
 
 == Symbolic link ==
 QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 
 == Active commit to intermediate layer should work when base in use ==
 {"return": {}}
@@ -420,7 +420,7 @@ Adding drive
 
 _qemu_io_wrapper TEST_DIR/t.qcow2 -c write 0 512
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 Creating overlay with qemu-img when the guest is running should be allowed
 
 _qemu_img_wrapper create -f qcow2 -b TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.overlay
@@ -433,7 +433,7 @@ _qemu_img_wrapper info TEST_DIR/t.qcow2
 
 _qemu_io_wrapper TEST_DIR/t.qcow2 -c write 0 512
 can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 Closing the other
 
 _qemu_io_wrapper TEST_DIR/t.qcow2 -c write 0 512

diff --git a/tests/qemu-iotests/182.out b/tests/qemu-iotests/182.out
index 23a4dbf80910dd166eeaf38fd86d5f2d7e1618b5..f1463c88626e09c8b8659997e48ae696c3c48bb4 100644 (file)
--- a/tests/qemu-iotests/182.out
+++ b/tests/qemu-iotests/182.out
@@ -4,5 +4,5 @@ Starting QEMU
 
 Starting a second QEMU using the same image should fail
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0,file.locking=on: Failed to get "write" lock
-Is another process using the image?
+Is another process using the image [TEST_DIR/t.qcow2]?
 *** done