From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69435C433DF for ; Mon, 27 Jul 2020 05:02:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 37D7120714 for ; Mon, 27 Jul 2020 05:02:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37D7120714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39272 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jzvHo-000393-H0 for qemu-devel@archiver.kernel.org; Mon, 27 Jul 2020 01:02:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59746) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jzvFt-0002Bb-N7 for qemu-devel@nongnu.org; Mon, 27 Jul 2020 01:00:53 -0400 Received: from indium.canonical.com ([91.189.90.7]:49580) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jzvFr-0001VV-CY for qemu-devel@nongnu.org; Mon, 27 Jul 2020 01:00:53 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1jzvFp-0008Vv-7s for ; Mon, 27 Jul 2020 05:00:49 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 2C7032E80D2 for ; Mon, 27 Jul 2020 05:00:49 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Mon, 27 Jul 2020 04:54:53 -0000 From: Hgkamath <1889033@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: hgkamath X-Launchpad-Bug-Reporter: Hgkamath (hgkamath) X-Launchpad-Bug-Modifier: Hgkamath (hgkamath) Message-Id: <159582569332.29849.16382151377697591855.malonedeb@chaenomeles.canonical.com> Subject: [Bug 1889033] [NEW] qemu-img permission denied on vmdk creation on CIFS share X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="e85d0ab92e2924d39b8285aeae075a01d25eff06"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: b526a3479ed43beb325b7501a0cbc3d721ad32d7 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/26 23:20:39 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -58 X-Spam_score: -5.9 X-Spam_bar: ----- X-Spam_report: (-5.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1889033 <1889033@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Public bug reported: - on a CIFS mount qemu-img claims not to have permissions to write into a f= ile. - VMDK sparse file creation succeeds - VMDK Flat file creation create the flat-file, but fails to write the desc= ription-file - VMDK flat file creation succeeds on native linux mount such as ~/tmp or /= tmp - same effect as root or non-root - same effect with selinux setenforce 0 a) I would have expected that the monolithic flat would have created only o= ne large file just like sparse, but it seems to create a description file, = in addition to the storing file. b) I am aware that qemu-img may have problem opening very large files on CI= FS, however, this file is not very large Windows-10 latest updated 2004 19041.388 Linux VM, Fedora-32 in Virtualbox 6.1.12 = # rpm -qa | grep qemu-img qemu-img-4.2.0-7.fc32.x86_64 mount options: = mount -t cifs //10.x,x,x/$shname /mnt/hshare -o defaults,username=3Dgana,r= w,uid=3D1000,gid=3D1000,vers=3D3.0 [root@fedora ~]# cd /mnt/hshare/some/folder/createvmdk/ [root@fedora createvmdk]# qemu-img create -f vmdk test1.vmdk 100M -o subfor= mat=3DmonolithicFlat Formatting 'test1.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwversio= n=3Dundefined subformat=3DmonolithicFlat qemu-img: test1.vmdk: Could not write description: Permission denied [root@fedora createvmdk]# ls -l test1*.* -rwxr-xr-x. 1 gana gana 104857600 Jul 26 23:02 test1-flat.vmdk -rwxr-xr-x. 1 gana gana 0 Jul 26 23:02 test1.vmdk [root@fedora createvmdk]# du -k test1*.* 0 test1-flat.vmdk 0 test1.vmdk # (doesn't seem to be really flat) creation in /tmp works # cd /tmp [root@fedora tmp]# qemu-img create -f vmdk test1.vmdk 100M -o subformat=3Dm= onolithicFlat Formatting 'test1.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwversio= n=3Dundefined subformat=3DmonolithicFlat [root@fedora tmp]# ls -l /tmp/test1*.* -rw-r--r--. 1 root root 104857600 Jul 26 22:43 /tmp/test1-flat.vmdk -rw-r--r--. 1 root root 313 Jul 26 22:43 /tmp/test1.vmdk [root@fedora createvmdk]# du -k /tmp/test1*.* 4 /tmp/test1-flat.vmdk 4 /tmp/test1.vmdk [root@fedora createvmdk]# cat /tmp/test1.vmdk # Disk DescriptorFile version=3D1 CID=3D5f13c13d parentCID=3Dffffffff createType=3D"monolithicFlat" # Extent description RW 204800 FLAT "test1-flat.vmdk" 0 # The Disk Data Base #DDB ddb.virtualHWVersion =3D "4" ddb.geometry.cylinders =3D "203" ddb.geometry.heads =3D "16" ddb.geometry.sectors =3D "63" ddb.adapterType =3D "ide" On the other-hand creating a sparse file works cd /mnt/hshare/some/folder/createvmdk/ [root@fedora createvmdk]# qemu-img create -f vmdk test2.vmdk 100M -o subfor= mat=3DmonolithicSparse Formatting 'test2.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwversio= n=3Dundefined subformat=3DmonolithicSparse [root@fedora createvmdk]# ls l test2*.* -rwxr-xr-x. 1 gana gana 65536 Jul 26 22:52 test2.vmdk [root@fedora createvmdk]# du -k /tmp/test2*.* 12 /tmp/test2.vmdk test2.vmdk is a binary file inside it, located among garbled ascii characters is an embedded VMDK descr= iption ```` # Disk DescriptorFile version=3D1 CID=3Dcf302a20 parentCID=3Dffffffff createType=3D"monolithicSparse" # Extent description RW 204800 SPARSE "test2.vmdk" # The Disk Data Base #DDB ddb.virtualHWVersion =3D "4" ddb.geometry.cylinders =3D "203" ddb.geometry.heads =3D "16" ddb.geometry.sectors =3D "63" ddb.adapterType =3D "ide" ``` ** Affects: qemu Importance: Undecided Status: New -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1889033 Title: qemu-img permission denied on vmdk creation on CIFS share Status in QEMU: New Bug description: = - on a CIFS mount qemu-img claims not to have permissions to write into a= file. - VMDK sparse file creation succeeds - VMDK Flat file creation create the flat-file, but fails to write the de= scription-file - VMDK flat file creation succeeds on native linux mount such as ~/tmp or= /tmp - same effect as root or non-root - same effect with selinux setenforce 0 a) I would have expected that the monolithic flat would have created only= one large file just like sparse, but it seems to create a description file= , in addition to the storing file. b) I am aware that qemu-img may have problem opening very large files on = CIFS, however, this file is not very large Windows-10 latest updated 2004 19041.388 Linux VM, Fedora-32 in Virtualbox 6.1.12 = # rpm -qa | grep qemu-img qemu-img-4.2.0-7.fc32.x86_64 mount options: = mount -t cifs //10.x,x,x/$shname /mnt/hshare -o defaults,username=3Dgana= ,rw,uid=3D1000,gid=3D1000,vers=3D3.0 [root@fedora ~]# cd /mnt/hshare/some/folder/createvmdk/ [root@fedora createvmdk]# qemu-img create -f vmdk test1.vmdk 100M -o subf= ormat=3DmonolithicFlat Formatting 'test1.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwvers= ion=3Dundefined subformat=3DmonolithicFlat qemu-img: test1.vmdk: Could not write description: Permission denied [root@fedora createvmdk]# ls -l test1*.* -rwxr-xr-x. 1 gana gana 104857600 Jul 26 23:02 test1-flat.vmdk -rwxr-xr-x. 1 gana gana 0 Jul 26 23:02 test1.vmdk [root@fedora createvmdk]# du -k test1*.* 0 test1-flat.vmdk 0 test1.vmdk # (doesn't seem to be really flat) creation in /tmp works # cd /tmp [root@fedora tmp]# qemu-img create -f vmdk test1.vmdk 100M -o subformat= =3DmonolithicFlat Formatting 'test1.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwvers= ion=3Dundefined subformat=3DmonolithicFlat [root@fedora tmp]# ls -l /tmp/test1*.* -rw-r--r--. 1 root root 104857600 Jul 26 22:43 /tmp/test1-flat.vmdk -rw-r--r--. 1 root root 313 Jul 26 22:43 /tmp/test1.vmdk [root@fedora createvmdk]# du -k /tmp/test1*.* 4 /tmp/test1-flat.vmdk 4 /tmp/test1.vmdk [root@fedora createvmdk]# cat /tmp/test1.vmdk # Disk DescriptorFile version=3D1 CID=3D5f13c13d parentCID=3Dffffffff createType=3D"monolithicFlat" # Extent description RW 204800 FLAT "test1-flat.vmdk" 0 # The Disk Data Base #DDB ddb.virtualHWVersion =3D "4" ddb.geometry.cylinders =3D "203" ddb.geometry.heads =3D "16" ddb.geometry.sectors =3D "63" ddb.adapterType =3D "ide" = On the other-hand creating a sparse file works cd /mnt/hshare/some/folder/createvmdk/ [root@fedora createvmdk]# qemu-img create -f vmdk test2.vmdk 100M -o subf= ormat=3DmonolithicSparse Formatting 'test2.vmdk', fmt=3Dvmdk size=3D104857600 compat6=3Doff hwvers= ion=3Dundefined subformat=3DmonolithicSparse [root@fedora createvmdk]# ls l test2*.* -rwxr-xr-x. 1 gana gana 65536 Jul 26 22:52 test2.vmdk [root@fedora createvmdk]# du -k /tmp/test2*.* 12 /tmp/test2.vmdk test2.vmdk is a binary file inside it, located among garbled ascii characters is an embedded VMDK des= cription ```` # Disk DescriptorFile version=3D1 CID=3Dcf302a20 parentCID=3Dffffffff createType=3D"monolithicSparse" # Extent description RW 204800 SPARSE "test2.vmdk" # The Disk Data Base #DDB ddb.virtualHWVersion =3D "4" ddb.geometry.cylinders =3D "203" ddb.geometry.heads =3D "16" ddb.geometry.sectors =3D "63" ddb.adapterType =3D "ide" ``` To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1889033/+subscriptions