From a367a18d2a7aac9f9ee77fed5a36a66d6481b88a Mon Sep 17 00:00:00 2001 Message-Id: In-Reply-To: <276ddced7c9181cce17d0ff9eb080f99dcfe0ac3.1376492227.git.minovotn@redhat.com> References: <276ddced7c9181cce17d0ff9eb080f99dcfe0ac3.1376492227.git.minovotn@redhat.com> From: Asias He Date: Wed, 14 Aug 2013 10:24:19 +0200 Subject: [PATCH 18/22] gluster: Add image resize support RH-Author: Asias He Message-id: <1376475863-27929-14-git-send-email-asias@redhat.com> Patchwork-id: 53400 O-Subject: [RHEL6.5 qemu-kvm PATCH v4 13/17] gluster: Add image resize support Bugzilla: 848070 RH-Acked-by: Kevin Wolf RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Jeffrey Cody From: Paolo Bonzini Implement .bdrv_truncate in GlusterFS block driver so that GlusterFS backend can support image resizing. Signed-off-by: Paolo Bonzini Signed-off-by: Bharata B Rao Tested-by: Bharata B Rao Acked-by: Stefan Hajnoczi Signed-off-by: Stefan Hajnoczi (cherry picked from commit 42ec24e2851674e0899f71933e0d7d9125f31d76) --- block/gluster.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) Signed-off-by: Michal Novotny --- block/gluster.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/block/gluster.c b/block/gluster.c index 5163c6b..5310b98 100644 --- a/block/gluster.c +++ b/block/gluster.c @@ -463,6 +463,19 @@ 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) @@ -562,6 +575,7 @@ 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, @@ -577,6 +591,7 @@ 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, @@ -592,6 +607,7 @@ 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, @@ -607,6 +623,7 @@ 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