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From d59261d209da6f3dd4dfef7fab327de7cbb6e7ff Mon Sep 17 00:00:00 2001
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Message-Id: <d59261d209da6f3dd4dfef7fab327de7cbb6e7ff@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 4 Feb 2020 15:07:54 +0100
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Subject: [PATCH] qemu: checkpoint: tolerate missing disks on checkpoint
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deletion
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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If a disk is unplugged and then the user tries to delete a checkpoint
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the code would try to use NULL node name as it was not checked.
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Fix this by fetching the whole disk definition object and verifying it
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was found.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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(cherry picked from commit f19248a1395e59abbd68ac31af3d9bd1273555bf)
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https://bugzilla.redhat.com/show_bug.cgi?id=1207659
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Message-Id: <bab5a0f3d17855a657a6b7de4699a72e176780d6.1580824112.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/qemu/qemu_checkpoint.c | 23 +++++++++++++++++------
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1 file changed, 17 insertions(+), 6 deletions(-)
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diff --git a/src/qemu/qemu_checkpoint.c b/src/qemu/qemu_checkpoint.c
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index 03a8321135..326707e098 100644
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--- a/src/qemu/qemu_checkpoint.c
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+++ b/src/qemu/qemu_checkpoint.c
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@@ -125,12 +125,15 @@ qemuCheckpointDiscardBitmaps(virDomainObjPtr vm,
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for (i = 0; i < chkdef->ndisks; i++) {
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virDomainCheckpointDiskDef *chkdisk = &chkdef->disks[i];
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- const char *node;
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+ virDomainDiskDefPtr domdisk = virDomainDiskByTarget(vm->def, chkdisk->name);
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+
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+ /* domdisk can be missing e.g. when it was unplugged */
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+ if (!domdisk)
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+ continue;
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if (chkdisk->type != VIR_DOMAIN_CHECKPOINT_TYPE_BITMAP)
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continue;
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- node = qemuDomainDiskNodeFormatLookup(vm, chkdisk->name);
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/* If any ancestor checkpoint has a bitmap for the same
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* disk, then this bitmap must be merged to the
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* ancestor. */
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@@ -153,20 +156,28 @@ qemuCheckpointDiscardBitmaps(virDomainObjPtr vm,
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if (!(arr = virJSONValueNewArray()))
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return -1;
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- if (qemuMonitorTransactionBitmapMergeSourceAddBitmap(arr, node, chkdisk->bitmap) < 0)
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+ if (qemuMonitorTransactionBitmapMergeSourceAddBitmap(arr,
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+ domdisk->src->nodeformat,
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+ chkdisk->bitmap) < 0)
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return -1;
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if (chkcurrent) {
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- if (qemuMonitorTransactionBitmapEnable(actions, node, disk2->bitmap) < 0)
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+ if (qemuMonitorTransactionBitmapEnable(actions,
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+ domdisk->src->nodeformat,
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+ disk2->bitmap) < 0)
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return -1;
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}
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- if (qemuMonitorTransactionBitmapMerge(actions, node, disk2->bitmap, &arr) < 0)
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+ if (qemuMonitorTransactionBitmapMerge(actions,
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+ domdisk->src->nodeformat,
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+ disk2->bitmap, &arr) < 0)
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return -1;
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}
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}
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- if (qemuMonitorTransactionBitmapRemove(actions, node, chkdisk->bitmap) < 0)
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+ if (qemuMonitorTransactionBitmapRemove(actions,
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+ domdisk->src->nodeformat,
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+ chkdisk->bitmap) < 0)
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return -1;
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}
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--
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2.25.0
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