From patchwork Thu Mar 26 14:29:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Reitz X-Patchwork-Id: 1262042 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=OXtadP0W; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48p6pn0Bhbz9sSL for ; Fri, 27 Mar 2020 01:30:41 +1100 (AEDT) Received: from localhost ([::1]:53776 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHTWo-0003pL-Sq for incoming@patchwork.ozlabs.org; Thu, 26 Mar 2020 10:30:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41310) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHTW4-0003TY-Gl for qemu-devel@nongnu.org; Thu, 26 Mar 2020 10:29:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jHTW2-0002o4-6j for qemu-devel@nongnu.org; Thu, 26 Mar 2020 10:29:52 -0400 Received: from us-smtp-delivery-74.mimecast.com ([216.205.24.74]:44236) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jHTW2-0002nj-2A for qemu-devel@nongnu.org; Thu, 26 Mar 2020 10:29:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585232989; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yjIVsItgcOWyMDqRRb8cyvi6tc2z9I6ImxYrKE3Nslk=; b=OXtadP0WdyzseMGPYGnZjnWXF0Mm7A5rhtZCduEJcQYsYJrvAHhxvI1YspdTzAj7qvdVql NC4Pydb51RNvrPp4xX5EDsN3sut9nbUl369/lvw9QDhDKurkp8KhfZCT5nvYBE80jMEy2O Q+imZwPFAMNDJfdX31Fv60qha6d9qxA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-297-EVEImvgwNveed1xvW-S0Bw-1; Thu, 26 Mar 2020 10:29:47 -0400 X-MC-Unique: EVEImvgwNveed1xvW-S0Bw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2B0A88018AC; Thu, 26 Mar 2020 14:29:46 +0000 (UTC) Received: from localhost (ovpn-112-132.ams2.redhat.com [10.36.112.132]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 53DF719C70; Thu, 26 Mar 2020 14:29:45 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PULL 03/10] block: trickle down the fallback image creation function use to the block drivers Date: Thu, 26 Mar 2020 15:29:26 +0100 Message-Id: <20200326142933.625037-4-mreitz@redhat.com> In-Reply-To: <20200326142933.625037-1-mreitz@redhat.com> References: <20200326142933.625037-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Maxim Levitsky Instead of checking the .bdrv_co_create_opts to see if we need the fallback, just implement the .bdrv_co_create_opts in the drivers that need it. This way we don't break various places that need to know if the underlying protocol/format really supports image creation, and this way we still allow some drivers to not support image creation. Fixes: fd17146cd93d1704cd96d7c2757b325fc7aac6fd Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1816007 Note that technically this driver reverts the image creation fallback for the vxhs driver since I don't have a means to test it, and IMHO it is better to leave it not supported as it was prior to generic image creation patches. Also drop iscsi_create_opts which was left accidentally. Signed-off-by: Maxim Levitsky Message-Id: <20200326011218.29230-3-mlevitsk@redhat.com> Reviewed-by: Denis V. Lunev [mreitz: Fixed alignment, and moved bdrv_co_create_opts_simple() and bdrv_create_opts_simple from block.h into block_int.h] Signed-off-by: Max Reitz --- include/block/block.h | 1 + include/block/block_int.h | 11 +++++++++++ block.c | 35 ++++++++++++++++++++--------------- block/file-posix.c | 7 ++++++- block/iscsi.c | 16 ++++------------ block/nbd.c | 6 ++++++ block/nvme.c | 3 +++ 7 files changed, 51 insertions(+), 28 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index e569a4d747..b05995fe9c 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -283,6 +283,7 @@ BlockDriver *bdrv_find_format(const char *format_name); int bdrv_create(BlockDriver *drv, const char* filename, QemuOpts *opts, Error **errp); int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp); + BlockDriverState *bdrv_new(void); void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, Error **errp); diff --git a/include/block/block_int.h b/include/block/block_int.h index 57c8ea24b2..4c3587ea19 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -1331,4 +1331,15 @@ int refresh_total_sectors(BlockDriverState *bs, int64_t hint); void bdrv_set_monitor_owned(BlockDriverState *bs); BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp); +/** + * Simple implementation of bdrv_co_create_opts for protocol drivers + * which only support creation via opening a file + * (usually existing raw storage device) + */ +int coroutine_fn bdrv_co_create_opts_simple(BlockDriver *drv, + const char *filename, + QemuOpts *opts, + Error **errp); +extern QemuOptsList bdrv_create_opts_simple; + #endif /* BLOCK_INT_H */ diff --git a/block.c b/block.c index ff23e20443..af3faf664e 100644 --- a/block.c +++ b/block.c @@ -598,8 +598,15 @@ static int create_file_fallback_zero_first_sector(BlockBackend *blk, return 0; } -static int bdrv_create_file_fallback(const char *filename, BlockDriver *drv, - QemuOpts *opts, Error **errp) +/** + * Simple implementation of bdrv_co_create_opts for protocol drivers + * which only support creation via opening a file + * (usually existing raw storage device) + */ +int coroutine_fn bdrv_co_create_opts_simple(BlockDriver *drv, + const char *filename, + QemuOpts *opts, + Error **errp) { BlockBackend *blk; QDict *options; @@ -663,11 +670,7 @@ int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp) return -ENOENT; } - if (drv->bdrv_co_create_opts) { - return bdrv_create(drv, filename, opts, errp); - } else { - return bdrv_create_file_fallback(filename, drv, opts, errp); - } + return bdrv_create(drv, filename, opts, errp); } int coroutine_fn bdrv_co_delete_file(BlockDriverState *bs, Error **errp) @@ -1592,9 +1595,9 @@ QemuOptsList bdrv_runtime_opts = { }, }; -static QemuOptsList fallback_create_opts = { - .name = "fallback-create-opts", - .head = QTAILQ_HEAD_INITIALIZER(fallback_create_opts.head), +QemuOptsList bdrv_create_opts_simple = { + .name = "simple-create-opts", + .head = QTAILQ_HEAD_INITIALIZER(bdrv_create_opts_simple.head), .desc = { { .name = BLOCK_OPT_SIZE, @@ -5963,13 +5966,15 @@ void bdrv_img_create(const char *filename, const char *fmt, return; } + if (!proto_drv->create_opts) { + error_setg(errp, "Protocol driver '%s' does not support image creation", + proto_drv->format_name); + return; + } + /* Create parameter list */ create_opts = qemu_opts_append(create_opts, drv->create_opts); - if (proto_drv->create_opts) { - create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); - } else { - create_opts = qemu_opts_append(create_opts, &fallback_create_opts); - } + create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); diff --git a/block/file-posix.c b/block/file-posix.c index 65bc980bc4..7e19bbff5f 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -3513,6 +3513,8 @@ static BlockDriver bdrv_host_device = { .bdrv_reopen_prepare = raw_reopen_prepare, .bdrv_reopen_commit = raw_reopen_commit, .bdrv_reopen_abort = raw_reopen_abort, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .mutable_opts = mutable_opts, .bdrv_co_invalidate_cache = raw_co_invalidate_cache, .bdrv_co_pwrite_zeroes = hdev_co_pwrite_zeroes, @@ -3639,10 +3641,11 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_reopen_prepare = raw_reopen_prepare, .bdrv_reopen_commit = raw_reopen_commit, .bdrv_reopen_abort = raw_reopen_abort, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .mutable_opts = mutable_opts, .bdrv_co_invalidate_cache = raw_co_invalidate_cache, - .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, .bdrv_co_flush_to_disk = raw_co_flush_to_disk, @@ -3771,6 +3774,8 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_reopen_prepare = raw_reopen_prepare, .bdrv_reopen_commit = raw_reopen_commit, .bdrv_reopen_abort = raw_reopen_abort, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .mutable_opts = mutable_opts, .bdrv_co_preadv = raw_co_preadv, diff --git a/block/iscsi.c b/block/iscsi.c index 682abd8e09..14680a436a 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -2399,18 +2399,6 @@ out_unlock: return r; } -static QemuOptsList iscsi_create_opts = { - .name = "iscsi-create-opts", - .head = QTAILQ_HEAD_INITIALIZER(iscsi_create_opts.head), - .desc = { - { - .name = BLOCK_OPT_SIZE, - .type = QEMU_OPT_SIZE, - .help = "Virtual disk size" - }, - { /* end of list */ } - } -}; static const char *const iscsi_strong_runtime_opts[] = { "transport", @@ -2434,6 +2422,8 @@ static BlockDriver bdrv_iscsi = { .bdrv_parse_filename = iscsi_parse_filename, .bdrv_file_open = iscsi_open, .bdrv_close = iscsi_close, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .bdrv_reopen_prepare = iscsi_reopen_prepare, .bdrv_reopen_commit = iscsi_reopen_commit, .bdrv_co_invalidate_cache = iscsi_co_invalidate_cache, @@ -2471,6 +2461,8 @@ static BlockDriver bdrv_iser = { .bdrv_parse_filename = iscsi_parse_filename, .bdrv_file_open = iscsi_open, .bdrv_close = iscsi_close, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .bdrv_reopen_prepare = iscsi_reopen_prepare, .bdrv_reopen_commit = iscsi_reopen_commit, .bdrv_co_invalidate_cache = iscsi_co_invalidate_cache, diff --git a/block/nbd.c b/block/nbd.c index 976be76647..2160859f64 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -2038,6 +2038,8 @@ static BlockDriver bdrv_nbd = { .protocol_name = "nbd", .instance_size = sizeof(BDRVNBDState), .bdrv_parse_filename = nbd_parse_filename, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .bdrv_file_open = nbd_open, .bdrv_reopen_prepare = nbd_client_reopen_prepare, .bdrv_co_preadv = nbd_client_co_preadv, @@ -2063,6 +2065,8 @@ static BlockDriver bdrv_nbd_tcp = { .protocol_name = "nbd+tcp", .instance_size = sizeof(BDRVNBDState), .bdrv_parse_filename = nbd_parse_filename, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .bdrv_file_open = nbd_open, .bdrv_reopen_prepare = nbd_client_reopen_prepare, .bdrv_co_preadv = nbd_client_co_preadv, @@ -2088,6 +2092,8 @@ static BlockDriver bdrv_nbd_unix = { .protocol_name = "nbd+unix", .instance_size = sizeof(BDRVNBDState), .bdrv_parse_filename = nbd_parse_filename, + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, .bdrv_file_open = nbd_open, .bdrv_reopen_prepare = nbd_client_reopen_prepare, .bdrv_co_preadv = nbd_client_co_preadv, diff --git a/block/nvme.c b/block/nvme.c index d41c4bda6e..7b7c0cc5d6 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -1333,6 +1333,9 @@ static BlockDriver bdrv_nvme = { .protocol_name = "nvme", .instance_size = sizeof(BDRVNVMeState), + .bdrv_co_create_opts = bdrv_co_create_opts_simple, + .create_opts = &bdrv_create_opts_simple, + .bdrv_parse_filename = nvme_parse_filename, .bdrv_file_open = nvme_file_open, .bdrv_close = nvme_close,