From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41084) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Whf72-000395-0h for qemu-devel@nongnu.org; Tue, 06 May 2014 09:08:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Whf6v-000785-SI for qemu-devel@nongnu.org; Tue, 06 May 2014 09:08:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:32067) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Whf6v-00077w-KG for qemu-devel@nongnu.org; Tue, 06 May 2014 09:08:41 -0400 From: Fam Zheng Date: Tue, 6 May 2014 21:08:44 +0800 Message-Id: <1399381726-8078-3-git-send-email-famz@redhat.com> In-Reply-To: <1399381726-8078-1-git-send-email-famz@redhat.com> References: <1399381726-8078-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH v4 2/4] vmdk: Implement .bdrv_write_compressed List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, gentoo.integer@gmail.com, stefanha@redhat.com Add a wrapper function to support "compressed" path in qemu-img convert. Only support streamOptimized subformat case for now (num_extents == 1 and extent compression is true). Signed-off-by: Fam Zheng --- block/vmdk.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/block/vmdk.c b/block/vmdk.c index d7e48e0..a7783f7 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1510,6 +1510,19 @@ static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num, return ret; } +static int vmdk_write_compressed(BlockDriverState *bs, + int64_t sector_num, + const uint8_t *buf, + int nb_sectors) +{ + BDRVVmdkState *s = bs->opaque; + if (s->num_extents == 1 && s->extents[0].compressed) { + return vmdk_write(bs, sector_num, buf, nb_sectors, false, false); + } else { + return -ENOTSUP; + } +} + static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors, @@ -2123,6 +2136,7 @@ static BlockDriver bdrv_vmdk = { .bdrv_reopen_prepare = vmdk_reopen_prepare, .bdrv_read = vmdk_co_read, .bdrv_write = vmdk_co_write, + .bdrv_write_compressed = vmdk_write_compressed, .bdrv_co_write_zeroes = vmdk_co_write_zeroes, .bdrv_close = vmdk_close, .bdrv_create = vmdk_create, -- 1.9.2