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[Qemu-devel] [PATCH] gluster: Add image resize support
From: |
Bharata B Rao |
Subject: |
[Qemu-devel] [PATCH] gluster: Add image resize support |
Date: |
Fri, 19 Jul 2013 19:51:33 +0530 |
From: Paolo Bonzini <address@hidden>
Implement .bdrv_truncate in GlusterFS block driver so that GlusterFS backend
can support image resizing.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Bharata B Rao <address@hidden>
Tested-by: Bharata B Rao <address@hidden>
---
block/gluster.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/block/gluster.c b/block/gluster.c
index 6de418c..645b7f1 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -493,6 +493,19 @@ out:
return NULL;
}
+static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset)
+{
+ int ret;
+ BDRVGlusterState *s = bs->opaque;
+
+ ret = glfs_ftruncate(s->fd, offset);
+ if (ret < 0) {
+ return -errno;
+ }
+
+ return 0;
+}
+
static BlockDriverAIOCB *qemu_gluster_aio_readv(BlockDriverState *bs,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque)
@@ -631,6 +644,7 @@ static BlockDriver bdrv_gluster = {
.bdrv_create = qemu_gluster_create,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
.bdrv_aio_readv = qemu_gluster_aio_readv,
.bdrv_aio_writev = qemu_gluster_aio_writev,
.bdrv_aio_flush = qemu_gluster_aio_flush,
@@ -650,6 +664,7 @@ static BlockDriver bdrv_gluster_tcp = {
.bdrv_create = qemu_gluster_create,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
.bdrv_aio_readv = qemu_gluster_aio_readv,
.bdrv_aio_writev = qemu_gluster_aio_writev,
.bdrv_aio_flush = qemu_gluster_aio_flush,
@@ -669,6 +684,7 @@ static BlockDriver bdrv_gluster_unix = {
.bdrv_create = qemu_gluster_create,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
.bdrv_aio_readv = qemu_gluster_aio_readv,
.bdrv_aio_writev = qemu_gluster_aio_writev,
.bdrv_aio_flush = qemu_gluster_aio_flush,
@@ -688,6 +704,7 @@ static BlockDriver bdrv_gluster_rdma = {
.bdrv_create = qemu_gluster_create,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
.bdrv_aio_readv = qemu_gluster_aio_readv,
.bdrv_aio_writev = qemu_gluster_aio_writev,
.bdrv_aio_flush = qemu_gluster_aio_flush,
--
1.7.11.7
- [Qemu-devel] [PATCH] gluster: Add image resize support,
Bharata B Rao <=