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From 4f7481a9815ec6b879db9cb20be7dcc419274e11 Mon Sep 17 00:00:00 2001
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From: Asias He <asias@redhat.com>
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Date: Thu, 12 Sep 2013 07:39:32 +0200
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Subject: [PATCH 12/29] gluster: Add image resize support
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RH-Author: Asias He <asias@redhat.com>
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Message-id: <1378971575-22416-2-git-send-email-asias@redhat.com>
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Patchwork-id: 54323
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O-Subject: [RHEL7.0 qemu-kvm PATCH 1/4] gluster: Add image resize support
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Bugzilla: 1007226
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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From: Paolo Bonzini <pbonzini@redhat.com>
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BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1005052
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Brew: https://brewweb.devel.redhat.com/taskinfo?taskID=6275752
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Implement .bdrv_truncate in GlusterFS block driver so that GlusterFS backend
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can support image resizing.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
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Tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
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Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 42ec24e2851674e0899f71933e0d7d9125f31d76)
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---
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block/gluster.c | 17 +++++++++++++++++
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1 file changed, 17 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/gluster.c | 17 +++++++++++++++++
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1 files changed, 17 insertions(+), 0 deletions(-)
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diff --git a/block/gluster.c b/block/gluster.c
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index 61424bc..7b10e9c 100644
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--- a/block/gluster.c
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+++ b/block/gluster.c
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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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+
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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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+
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+ return 0;
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+}
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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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@@ -598,6 +611,7 @@ 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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@@ -614,6 +628,7 @@ 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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@@ -630,6 +645,7 @@ 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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@@ -646,6 +662,7 @@ 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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--
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1.7.1
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