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From fdbb929cb1f83931378f9910a2922bf9d68f0c04 Mon Sep 17 00:00:00 2001
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Message-Id: <fdbb929cb1f83931378f9910a2922bf9d68f0c04@dist-git>
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From: John Ferlan <jferlan@redhat.com>
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Date: Fri, 2 Nov 2018 16:57:11 +0100
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Subject: [PATCH] storage: Allow for inputvol to have any format for encryption
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Commit 39cef12a9 altered/fixed the inputvol processing to create
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a multistep process when using an inputvol to create an encrypted
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output volume; however, it unnecessarily assumed/restricted the
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inputvol to be of 'raw' format only.
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Modify the processing code to allow the inputvol format to be checked
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and used in order to create the encrypted volume.
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Signed-off-by: John Ferlan <jferlan@redhat.com>
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ACKed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 80414718587ab8dd97025ec9145f30fa1a3654ed)
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https://bugzilla.redhat.com/show_bug.cgi?id=1645459
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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 src/storage/storage_util.c                    | 14 ++++++++++++-
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 .../luks-convert-qcow2.argv                   |  9 ++++++++
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 tests/storagevolxml2argvtest.c                |  4 ++++
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 tests/storagevolxml2xmlin/vol-file-qcow2.xml  | 21 +++++++++++++++++++
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 4 files changed, 47 insertions(+), 1 deletion(-)
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 create mode 100644 tests/storagevolxml2argvdata/luks-convert-qcow2.argv
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 create mode 100644 tests/storagevolxml2xmlin/vol-file-qcow2.xml
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diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
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index 19e58714ca..c5e773ab6d 100644
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--- a/src/storage/storage_util.c
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+++ b/src/storage/storage_util.c
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@@ -692,6 +692,7 @@ storagePloopResize(virStorageVolDefPtr vol,
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 struct _virStorageBackendQemuImgInfo {
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     int format;
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     const char *type;
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+    const char *inputType;
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     const char *path;
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     unsigned long long size_arg;
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     unsigned long long allocation;
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@@ -1014,6 +1015,15 @@ virStorageBackendCreateQemuImgSetInfo(virStoragePoolObjPtr pool,
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         return -1;
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     }
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+    if (inputvol &&
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+        !(info->inputType =
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+          virStorageFileFormatTypeToString(inputvol->target.format))) {
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+        virReportError(VIR_ERR_INTERNAL_ERROR,
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+                       _("unknown inputvol storage vol type %d"),
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+                       inputvol->target.format);
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+        return -1;
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+    }
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+
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     if (info->preallocate && info->format != VIR_STORAGE_FILE_QCOW2) {
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         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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                        _("metadata preallocation only available with qcow2"));
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@@ -1073,6 +1083,7 @@ virStorageBackendCreateQemuImgCmdFromVol(virStoragePoolObjPtr pool,
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     struct _virStorageBackendQemuImgInfo info = {
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         .format = vol->target.format,
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         .type = NULL,
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+        .inputType = NULL,
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         .path = vol->target.path,
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         .allocation = vol->target.allocation,
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         .encryption = !!vol->target.encryption,
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@@ -1145,7 +1156,8 @@ virStorageBackendCreateQemuImgCmdFromVol(virStoragePoolObjPtr pool,
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             virCommandAddArgFormat(cmd, "%lluK", info.size_arg);
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     } else {
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         /* source */
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-        virCommandAddArgFormat(cmd, "driver=raw,file.filename=%s",
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+        virCommandAddArgFormat(cmd, "driver=%s,file.filename=%s",
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+                               info.inputType ? info.inputType : "raw",
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                                info.inputPath);
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         /* dest */
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diff --git a/tests/storagevolxml2argvdata/luks-convert-qcow2.argv b/tests/storagevolxml2argvdata/luks-convert-qcow2.argv
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new file mode 100644
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index 0000000000..9124f5f27c
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--- /dev/null
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+++ b/tests/storagevolxml2argvdata/luks-convert-qcow2.argv
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@@ -0,0 +1,9 @@
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+qemu-img create -f luks \
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+--object secret,id=OtherDemo.img_encrypt0,file=/path/to/secretFile \
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+-o key-secret=OtherDemo.img_encrypt0 \
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+/var/lib/libvirt/images/OtherDemo.img 5242880K
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+qemu-img convert --image-opts -n --target-image-opts \
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+--object secret,id=OtherDemo.img_encrypt0,file=/path/to/secretFile \
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+driver=qcow2,file.filename=/var/lib/libvirt/images/sparse-qcow2.img \
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+driver=luks,file.filename=/var/lib/libvirt/images/OtherDemo.img,\
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+key-secret=OtherDemo.img_encrypt0
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diff --git a/tests/storagevolxml2argvtest.c b/tests/storagevolxml2argvtest.c
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index b795f83aee..6a9a080dd1 100644
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--- a/tests/storagevolxml2argvtest.c
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+++ b/tests/storagevolxml2argvtest.c
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@@ -284,6 +284,10 @@ mymain(void)
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             "pool-dir", "vol-file",
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             "luks-convert", 0);
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+    DO_TEST("pool-dir", "vol-luks-convert",
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+            "pool-dir", "vol-file-qcow2",
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+            "luks-convert-qcow2", 0);
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+
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     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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 }
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diff --git a/tests/storagevolxml2xmlin/vol-file-qcow2.xml b/tests/storagevolxml2xmlin/vol-file-qcow2.xml
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new file mode 100644
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index 0000000000..025e7e0239
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--- /dev/null
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+++ b/tests/storagevolxml2xmlin/vol-file-qcow2.xml
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@@ -0,0 +1,21 @@
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+<volume>
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+  <name>sparse-qcow2.img</name>
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+  <source/>
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+  <capacity unit="TiB">1</capacity>
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+  <allocation unit="bytes">0</allocation>
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+  <target>
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+    <path>/var/lib/libvirt/images/sparse-qcow2.img</path>
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+    <format type="qcow2"/>
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+    <permissions>
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+      <mode>0</mode>
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+      <owner>0744</owner>
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+      <group>0</group>
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+      <label>virt_image_t</label>
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+    </permissions>
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+    <timestamps>
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+      <atime>1341933637.273190990</atime>
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+      <mtime>1341930622.047245868</mtime>
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+      <ctime>1341930622.047245868</ctime>
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+    </timestamps>
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+  </target>
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+</volume>
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-- 
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2.19.1
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