forked from rpms/libvirt
166 lines
6.4 KiB
Diff
166 lines
6.4 KiB
Diff
From d0dc4217142fda8ce8850a30b7d89a344bb55d5e Mon Sep 17 00:00:00 2001
|
|
Message-Id: <d0dc4217142fda8ce8850a30b7d89a344bb55d5e@dist-git>
|
|
From: Peter Krempa <pkrempa@redhat.com>
|
|
Date: Tue, 23 Jun 2020 12:23:35 +0200
|
|
Subject: [PATCH] qemu: backup: Split up code traversing checkpoint list
|
|
looking for bitmaps
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
The algorithm is getting quite complex. Split out the lookup of range of
|
|
backing chain storage sources and bitmaps contained in them which
|
|
correspond to one checkpoint.
|
|
|
|
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
|
|
Reviewed-by: Eric Blake <eblake@redhat.com>
|
|
(cherry picked from commit 562511afa6cef5948e6339596ba5954cb5ed0565)
|
|
https://bugzilla.redhat.com/show_bug.cgi?id=1804593
|
|
Message-Id: <b3a1485033a5bb425f261caeb299973b2f39bbff.1592906423.git.pkrempa@redhat.com>
|
|
Reviewed-by: Ján Tomko <jtomko@redhat.com>
|
|
---
|
|
src/qemu/qemu_backup.c | 111 ++++++++++++++++++++++-------------------
|
|
1 file changed, 61 insertions(+), 50 deletions(-)
|
|
|
|
diff --git a/src/qemu/qemu_backup.c b/src/qemu/qemu_backup.c
|
|
index 5d18720f53..400b711f79 100644
|
|
--- a/src/qemu/qemu_backup.c
|
|
+++ b/src/qemu/qemu_backup.c
|
|
@@ -173,72 +173,83 @@ qemuBackupDiskDataCleanup(virDomainObjPtr vm,
|
|
}
|
|
|
|
|
|
+static int
|
|
+qemuBackupGetBitmapMergeRange(virStorageSourcePtr from,
|
|
+ const char *bitmapname,
|
|
+ virJSONValuePtr *actions,
|
|
+ virStorageSourcePtr *to,
|
|
+ const char *diskdst,
|
|
+ virHashTablePtr blockNamedNodeData)
|
|
+{
|
|
+ g_autoptr(virJSONValue) act = virJSONValueNewArray();
|
|
+ virStorageSourcePtr tmpsrc = NULL;
|
|
+ virStorageSourcePtr n;
|
|
+ bool foundbitmap = false;
|
|
+
|
|
+ for (n = from; virStorageSourceIsBacking(n); n = n->backingStore) {
|
|
+ qemuBlockNamedNodeDataBitmapPtr bitmap = NULL;
|
|
+
|
|
+ if (!(bitmap = qemuBlockNamedNodeDataGetBitmapByName(blockNamedNodeData,
|
|
+ n,
|
|
+ bitmapname)))
|
|
+ break;
|
|
+
|
|
+ foundbitmap = true;
|
|
+
|
|
+ if (bitmap->inconsistent) {
|
|
+ virReportError(VIR_ERR_INVALID_ARG,
|
|
+ _("bitmap '%s' for image '%s%u' is inconsistent"),
|
|
+ bitmap->name, diskdst, n->id);
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
+ if (qemuMonitorTransactionBitmapMergeSourceAddBitmap(act,
|
|
+ n->nodeformat,
|
|
+ bitmapname) < 0)
|
|
+ return -1;
|
|
+
|
|
+ tmpsrc = n;
|
|
+ }
|
|
+
|
|
+ if (!foundbitmap) {
|
|
+ virReportError(VIR_ERR_INVALID_ARG,
|
|
+ _("failed to find bitmap '%s' in image '%s%u'"),
|
|
+ bitmapname, diskdst, from->id);
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
+ *actions = g_steal_pointer(&act);
|
|
+ *to = tmpsrc;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
virJSONValuePtr
|
|
qemuBackupDiskPrepareOneBitmapsChain(virDomainMomentDefPtr *incremental,
|
|
virStorageSourcePtr backingChain,
|
|
virHashTablePtr blockNamedNodeData,
|
|
const char *diskdst)
|
|
{
|
|
- qemuBlockNamedNodeDataBitmapPtr bitmap;
|
|
g_autoptr(virJSONValue) ret = NULL;
|
|
size_t incridx = 0;
|
|
+ virStorageSourcePtr n = backingChain;
|
|
|
|
ret = virJSONValueNewArray();
|
|
|
|
- if (!(bitmap = qemuBlockNamedNodeDataGetBitmapByName(blockNamedNodeData,
|
|
- backingChain,
|
|
- incremental[0]->name))) {
|
|
- virReportError(VIR_ERR_INVALID_ARG,
|
|
- _("failed to find bitmap '%s' in image '%s%u'"),
|
|
- incremental[0]->name, diskdst, backingChain->id);
|
|
- return NULL;
|
|
- }
|
|
+ for (incridx = 0; incremental[incridx]; incridx++) {
|
|
+ g_autoptr(virJSONValue) tmp = virJSONValueNewArray();
|
|
+ virStorageSourcePtr tmpsrc = NULL;
|
|
|
|
- while (bitmap) {
|
|
- if (bitmap->inconsistent) {
|
|
- virReportError(VIR_ERR_INVALID_ARG,
|
|
- _("bitmap '%s' for image '%s%u' is inconsistent"),
|
|
- bitmap->name, diskdst, backingChain->id);
|
|
+ if (qemuBackupGetBitmapMergeRange(n, incremental[incridx]->name,
|
|
+ &tmp, &tmpsrc, diskdst,
|
|
+ blockNamedNodeData) < 0)
|
|
return NULL;
|
|
- }
|
|
|
|
- if (qemuMonitorTransactionBitmapMergeSourceAddBitmap(ret,
|
|
- backingChain->nodeformat,
|
|
- bitmap->name) < 0)
|
|
+ if (virJSONValueArrayConcat(ret, tmp) < 0)
|
|
return NULL;
|
|
|
|
- if (backingChain->backingStore &&
|
|
- (bitmap = qemuBlockNamedNodeDataGetBitmapByName(blockNamedNodeData,
|
|
- backingChain->backingStore,
|
|
- incremental[incridx]->name))) {
|
|
- backingChain = backingChain->backingStore;
|
|
- continue;
|
|
- }
|
|
-
|
|
- if (incremental[incridx + 1]) {
|
|
- if ((bitmap = qemuBlockNamedNodeDataGetBitmapByName(blockNamedNodeData,
|
|
- backingChain,
|
|
- incremental[incridx + 1]->name))) {
|
|
- incridx++;
|
|
- continue;
|
|
- }
|
|
-
|
|
- if (backingChain->backingStore &&
|
|
- (bitmap = qemuBlockNamedNodeDataGetBitmapByName(blockNamedNodeData,
|
|
- backingChain->backingStore,
|
|
- incremental[incridx + 1]->name))) {
|
|
- incridx++;
|
|
- backingChain = backingChain->backingStore;
|
|
- continue;
|
|
- }
|
|
-
|
|
- virReportError(VIR_ERR_INVALID_ARG,
|
|
- _("failed to find bitmap '%s' in image '%s%u'"),
|
|
- incremental[incridx]->name, diskdst, backingChain->id);
|
|
- return NULL;
|
|
- } else {
|
|
- break;
|
|
- }
|
|
+ n = tmpsrc;
|
|
}
|
|
|
|
return g_steal_pointer(&ret);
|
|
--
|
|
2.27.0
|
|
|