From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57399) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g71qs-0002Eq-Qz for qemu-devel@nongnu.org; Mon, 01 Oct 2018 13:19:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g71qk-0006ub-9z for qemu-devel@nongnu.org; Mon, 01 Oct 2018 13:19:18 -0400 From: Kevin Wolf Date: Mon, 1 Oct 2018 19:18:39 +0200 Message-Id: <20181001171901.11004-2-kwolf@redhat.com> In-Reply-To: <20181001171901.11004-1-kwolf@redhat.com> References: <20181001171901.11004-1-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 01/23] file-posix: Include filename in locking error message List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org From: Fam Zheng 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 Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block/file-posix.c | 10 +++--- tests/qemu-iotests/153.out | 76 +++++++++++++++++++++++----------------------- tests/qemu-iotests/182.out | 2 +- 3 files changed, 45 insertions(+), 43 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index fe83cbf0eb..327f39ca45 100644 --- 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 93eaf10486..884254868c 100644 --- 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 23a4dbf809..f1463c8862 100644 --- 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 -- 2.13.6