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From 0cdb7038a7027cbb63c820e60bb34abd191ac85f Mon Sep 17 00:00:00 2001
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From: Fam Zheng <famz@redhat.com>
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Date: Mon, 15 Feb 2016 09:28:31 +0100
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Subject: [PATCH 18/18] vmdk: Fix calculation of block status's offset
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RH-Author: Fam Zheng <famz@redhat.com>
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Message-id: <1455528511-9357-19-git-send-email-famz@redhat.com>
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Patchwork-id: 69184
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O-Subject: [RHEL-7.3 qemu-kvm PATCH 18/18] vmdk: Fix calculation of block status's offset
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Bugzilla: 1299116
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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"offset" is the offset of cluster and sector_num doesn't necessarily
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refer to the start of it, it should add index_in_cluster.
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Signed-off-by: Fam Zheng <famz@redhat.com>
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Message-id: 1453780743-16806-12-git-send-email-famz@redhat.com
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Reviewed-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit d0a18f10251f515c86dcaec5bdf979a4e07fafc5)
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Signed-off-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/vmdk.c | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/block/vmdk.c b/block/vmdk.c
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index b0c312b..b4f0d44 100644
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--- a/block/vmdk.c
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+++ b/block/vmdk.c
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@@ -1275,6 +1275,7 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs,
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0, 0);
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qemu_co_mutex_unlock(&s->lock);
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+ index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num);
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switch (ret) {
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case VMDK_ERROR:
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ret = -EIO;
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@@ -1288,13 +1289,14 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs,
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case VMDK_OK:
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ret = BDRV_BLOCK_DATA;
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if (extent->file == bs->file && !extent->compressed) {
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- ret |= BDRV_BLOCK_OFFSET_VALID | offset;
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+ ret |= BDRV_BLOCK_OFFSET_VALID;
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+ ret |= (offset + (index_in_cluster << BDRV_SECTOR_BITS))
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+ & BDRV_BLOCK_OFFSET_MASK;
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}
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break;
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}
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- index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num);
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n = extent->cluster_sectors - index_in_cluster;
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if (n > nb_sectors) {
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n = nb_sectors;
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--
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1.8.3.1
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