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[Qemu-devel] [PULL 28/32] vmdk: fix metadata write regression
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PULL 28/32] vmdk: fix metadata write regression |
Date: |
Fri, 8 Jul 2016 19:21:40 +0200 |
From: Reda Sallahi <address@hidden>
Commit "cdeaf1f vmdk: add bdrv_co_write_zeroes" causes a regression on
writes. It writes metadata after every write instead of doing it only once
for each cluster.
vmdk_pwritev() writes metadata whenever m_data is set as valid so this patch
sets m_data as valid only when we have a new cluster which hasn't been
allocated before or a zero grain.
Signed-off-by: Reda Sallahi <address@hidden>
Message-id: address@hidden
Reviewed-by: Fam Zheng <address@hidden>
Signed-off-by: Max Reitz <address@hidden>
---
block/vmdk.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/block/vmdk.c b/block/vmdk.c
index c9914f7..46d474e 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1202,13 +1202,6 @@ static int get_cluster_offset(BlockDriverState *bs,
l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size;
cluster_sector = le32_to_cpu(l2_table[l2_index]);
- if (m_data) {
- m_data->valid = 1;
- m_data->l1_index = l1_index;
- m_data->l2_index = l2_index;
- m_data->l2_offset = l2_offset;
- m_data->l2_cache_entry = &l2_table[l2_index];
- }
if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) {
zeroed = true;
}
@@ -1231,6 +1224,13 @@ static int get_cluster_offset(BlockDriverState *bs,
if (ret) {
return ret;
}
+ if (m_data) {
+ m_data->valid = 1;
+ m_data->l1_index = l1_index;
+ m_data->l2_index = l2_index;
+ m_data->l2_offset = l2_offset;
+ m_data->l2_cache_entry = &l2_table[l2_index];
+ }
}
*cluster_offset = cluster_sector << BDRV_SECTOR_BITS;
return VMDK_OK;
--
1.8.3.1
- [Qemu-devel] [PULL 10/32] qemu-img: Set the ID of the block job in img_commit(), (continued)
- [Qemu-devel] [PULL 10/32] qemu-img: Set the ID of the block job in img_commit(), Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 20/32] block/qdev: Allow configuring rerror/werror with qdev properties, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 25/32] qemu-io: Use correct range limitations, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 09/32] commit: Add 'job-id' parameter to 'block-commit', Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 23/32] qemu-img: Use strerror() for generic resize error, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 26/32] qcow2: Fix qcow2_get_cluster_offset(), Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 21/32] qemu-iotests: Test setting WCE with qdev, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 11/32] blockjob: Update description of the 'device' field in the QMP API, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 22/32] block: Remove BB options from blockdev-add, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 24/32] qcow2: Avoid making the L1 table too big, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 28/32] vmdk: fix metadata write regression,
Kevin Wolf <=
- [Qemu-devel] [PULL 27/32] Improve block job rate limiting for small bandwidth values, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 16/32] coroutine: move entry argument to qemu_coroutine_create, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 29/32] blockdev: Fix regression with the default naming of throttling groups, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 30/32] qemu-iotests: Test naming of throttling groups, Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 31/32] hmp: use snapshot name to determine whether a snapshot is 'fully available', Kevin Wolf, 2016/07/08
- [Qemu-devel] [PULL 32/32] hmp: show all of snapshot info on every block dev in output of 'info snapshots', Kevin Wolf, 2016/07/08
- Re: [Qemu-devel] [PULL 00/32] Block layer patches, Peter Maydell, 2016/07/11