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gluster: Add image resize support
Implement .bdrv_truncate in GlusterFS block driver so that GlusterFS backend can support image resizing. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -493,6 +493,19 @@ out:
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return NULL;
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}
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static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset)
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{
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int ret;
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BDRVGlusterState *s = bs->opaque;
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ret = glfs_ftruncate(s->fd, offset);
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if (ret < 0) {
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return -errno;
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}
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return 0;
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}
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static BlockDriverAIOCB *qemu_gluster_aio_readv(BlockDriverState *bs,
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int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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@ -631,6 +644,7 @@ static BlockDriver bdrv_gluster = {
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.bdrv_create = qemu_gluster_create,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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.bdrv_truncate = qemu_gluster_truncate,
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.bdrv_aio_readv = qemu_gluster_aio_readv,
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.bdrv_aio_writev = qemu_gluster_aio_writev,
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.bdrv_aio_flush = qemu_gluster_aio_flush,
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@ -650,6 +664,7 @@ static BlockDriver bdrv_gluster_tcp = {
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.bdrv_create = qemu_gluster_create,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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.bdrv_truncate = qemu_gluster_truncate,
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.bdrv_aio_readv = qemu_gluster_aio_readv,
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.bdrv_aio_writev = qemu_gluster_aio_writev,
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.bdrv_aio_flush = qemu_gluster_aio_flush,
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@ -669,6 +684,7 @@ static BlockDriver bdrv_gluster_unix = {
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.bdrv_create = qemu_gluster_create,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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.bdrv_truncate = qemu_gluster_truncate,
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.bdrv_aio_readv = qemu_gluster_aio_readv,
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.bdrv_aio_writev = qemu_gluster_aio_writev,
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.bdrv_aio_flush = qemu_gluster_aio_flush,
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@ -688,6 +704,7 @@ static BlockDriver bdrv_gluster_rdma = {
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.bdrv_create = qemu_gluster_create,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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.bdrv_truncate = qemu_gluster_truncate,
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.bdrv_aio_readv = qemu_gluster_aio_readv,
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.bdrv_aio_writev = qemu_gluster_aio_writev,
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.bdrv_aio_flush = qemu_gluster_aio_flush,
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