From nobody Thu Nov 6 06:47:58 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1537851987555603.9364769604274; Mon, 24 Sep 2018 22:06:27 -0700 (PDT) Received: from localhost ([::1]:50853 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g4fYI-0004IZ-D3 for importer@patchew.org; Tue, 25 Sep 2018 01:06:26 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54028) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g4fXS-0003zR-4x for qemu-devel@nongnu.org; Tue, 25 Sep 2018 01:05:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g4fXQ-0004iC-5m for qemu-devel@nongnu.org; Tue, 25 Sep 2018 01:05:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58300) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1g4fXJ-0004ZV-CJ; Tue, 25 Sep 2018 01:05:26 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7EEC73084022; Tue, 25 Sep 2018 05:05:09 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-181.pek2.redhat.com [10.72.12.181]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6852960BE5; Tue, 25 Sep 2018 05:05:07 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Tue, 25 Sep 2018 13:05:01 +0800 Message-Id: <20180925050501.3524-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Tue, 25 Sep 2018 05:05:09 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] file-posix: Include filename in locking error message X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Image locking errors happening at device initialization time doesn't say which file cannot be locked, for instance, -device scsi-disk,drive=3Ddrive-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 --- 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 =3D 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 =3D 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; } =20 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=3DIMGFMT size=3D335= 54432 backing_file=3DTEST_DIR/t =20 =3D=3D Launching another QEMU, opts: '' =3D=3D QEMU_PROG: -drive file=3DTEST_DIR/t.qcow2,if=3Dnone,: Failed to get "write= " lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Launching another QEMU, opts: 'read-only=3Don' =3D=3D QEMU_PROG: -drive file=3DTEST_DIR/t.qcow2,if=3Dnone,read-only=3Don: Failed= to get shared "write" lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Launching another QEMU, opts: 'read-only=3Don,force-share=3Don' =3D= =3D =20 @@ -24,77 +24,77 @@ Is another process using the image? =20 _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]? =20 _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]? =20 _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' =20 _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' =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _qemu_img_wrapper dd if=3DTEST_DIR/t.qcow2 of=3DTEST_DIR/t.qcow2.convert b= s=3D512 count=3D1 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]? =20 _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]? =20 _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]? =20 _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 =20 =3D=3D Running utility commands -U =3D=3D @@ -132,7 +132,7 @@ Try 'qemu-img --help' for more information =20 _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]? =20 _qemu_img_wrapper snapshot -l -U TEST_DIR/t.qcow2 =20 @@ -157,7 +157,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=3DIMGFMT size=3D335= 54432 backing_file=3DTEST_DIR/t =20 =3D=3D Launching another QEMU, opts: '' =3D=3D QEMU_PROG: -drive file=3DTEST_DIR/t.qcow2,if=3Dnone,: Failed to get "write= " lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Launching another QEMU, opts: 'read-only=3Don' =3D=3D =20 @@ -167,13 +167,13 @@ Is another process using the image? =20 _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]? =20 _qemu_io_wrapper -r -c read 0 512 TEST_DIR/t.qcow2 =20 _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' =20 _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 =20 _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]? =20 _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]? =20 _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]? =20 _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]? =20 _qemu_img_wrapper snapshot -l TEST_DIR/t.qcow2 =20 @@ -212,11 +212,11 @@ _qemu_img_wrapper bench -c 1 TEST_DIR/t.qcow2 =20 _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]? =20 _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 =20 =3D=3D Running utility commands -U =3D=3D @@ -254,7 +254,7 @@ Try 'qemu-img --help' for more information =20 _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]? =20 _qemu_img_wrapper snapshot -l -U TEST_DIR/t.qcow2 =20 @@ -372,17 +372,17 @@ Round done =20 =3D=3D Two devices with the same image (read-only=3Doff - read-only=3Doff)= =3D=3D QEMU_PROG: -drive if=3Dnone,file=3DTEST_DIR/t.qcow2,read-only=3Doff: Faile= d to get "write" lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Two devices with the same image (read-only=3Doff - read-only=3Don) = =3D=3D QEMU_PROG: -drive if=3Dnone,file=3DTEST_DIR/t.qcow2,read-only=3Don: Failed= to get shared "write" lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Two devices with the same image (read-only=3Doff - read-only=3Don,f= orce-share=3Don) =3D=3D =20 =3D=3D Two devices with the same image (read-only=3Don - read-only=3Doff) = =3D=3D QEMU_PROG: -drive if=3Dnone,file=3DTEST_DIR/t.qcow2,read-only=3Doff: Faile= d to get "write" lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Two devices with the same image (read-only=3Don - read-only=3Don) = =3D=3D =20 @@ -403,13 +403,13 @@ Formatting 'TEST_DIR/t.IMGFMT.c', fmt=3DIMGFMT size= =3D33554432 backing_file=3DTEST_DIR =20 =3D=3D Backing image also as an active device =3D=3D QEMU_PROG: -drive if=3Dnone,file=3DTEST_DIR/t.qcow2: Failed to get "write"= lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Backing image also as an active device (ro) =3D=3D =20 =3D=3D Symbolic link =3D=3D QEMU_PROG: -drive if=3Dnone,file=3DTEST_DIR/t.qcow2: Failed to get "write"= lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? =20 =3D=3D Active commit to intermediate layer should work when base in use = =3D=3D {"return": {}} @@ -420,7 +420,7 @@ Adding drive =20 _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 =20 _qemu_img_wrapper create -f qcow2 -b TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.ove= rlay @@ -433,7 +433,7 @@ _qemu_img_wrapper info TEST_DIR/t.qcow2 =20 _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 =20 _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 =20 Starting a second QEMU using the same image should fail QEMU_PROG: -drive file=3DTEST_DIR/t.qcow2,if=3Dnone,id=3Ddrive0,file.locki= ng=3Don: Failed to get "write" lock -Is another process using the image? +Is another process using the image [TEST_DIR/t.qcow2]? *** done --=20 2.17.1