From patchwork Thu Jul 25 09:33:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 11058331 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BB90413A0 for ; Thu, 25 Jul 2019 09:34:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ACBCA28999 for ; Thu, 25 Jul 2019 09:34:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A19E12899F; Thu, 25 Jul 2019 09:34:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 22C0328999 for ; Thu, 25 Jul 2019 09:34:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403780AbfGYJeT (ORCPT ); Thu, 25 Jul 2019 05:34:19 -0400 Received: from mx2.suse.de ([195.135.220.15]:52346 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2403758AbfGYJeL (ORCPT ); Thu, 25 Jul 2019 05:34:11 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 2CC56AE6D for ; Thu, 25 Jul 2019 09:34:09 +0000 (UTC) From: Johannes Thumshirn To: David Sterba Cc: Linux BTRFS Mailinglist , Johannes Thumshirn Subject: [RFC PATCH 05/17] btrfs-progs: add option for checksum type to mkfs Date: Thu, 25 Jul 2019 11:33:52 +0200 Message-Id: X-Mailer: git-send-email 2.16.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add an option to mkfs to specify which checksum algorithm will be used for the filesystem. XXX this patch should go last in the series. Signed-off-by: Johannes Thumshirn --- mkfs/common.c | 2 +- mkfs/common.h | 2 ++ mkfs/main.c | 21 ++++++++++++++++++++- 3 files changed, 23 insertions(+), 2 deletions(-) diff --git a/mkfs/common.c b/mkfs/common.c index caca5e707233..8249492704ad 100644 --- a/mkfs/common.c +++ b/mkfs/common.c @@ -201,7 +201,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg) super.__unused_leafsize = cpu_to_le32(cfg->nodesize); btrfs_set_super_nodesize(&super, cfg->nodesize); btrfs_set_super_stripesize(&super, cfg->stripesize); - btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32); + btrfs_set_super_csum_type(&super, cfg->csum_type); btrfs_set_super_chunk_root_generation(&super, 1); btrfs_set_super_cache_generation(&super, -1); btrfs_set_super_incompat_flags(&super, cfg->features); diff --git a/mkfs/common.h b/mkfs/common.h index 28912906d0a9..384c1ef6a753 100644 --- a/mkfs/common.h +++ b/mkfs/common.h @@ -53,6 +53,8 @@ struct btrfs_mkfs_config { u64 features; /* Size of the filesystem in bytes */ u64 num_bytes; + /* checksum algorithm to use */ + u16 csum_type; /* Output fields, set during creation */ diff --git a/mkfs/main.c b/mkfs/main.c index 8dbec0717b89..3deff76045ba 100644 --- a/mkfs/main.c +++ b/mkfs/main.c @@ -346,6 +346,7 @@ static void print_usage(int ret) printf("\t--shrink (with --rootdir) shrink the filled filesystem to minimal size\n"); printf("\t-K|--nodiscard do not perform whole device TRIM\n"); printf("\t-f|--force force overwrite of existing filesystem\n"); + printf("\t-C|--checksum checksum algorithm to use (default: crc32c)\n"); printf(" general:\n"); printf("\t-q|--quiet no messages except errors\n"); printf("\t-V|--version print the mkfs.btrfs version and exit\n"); @@ -380,6 +381,18 @@ static u64 parse_profile(const char *s) return 0; } +static u16 parse_csum_type(const char *s) +{ + if (strcasecmp(s, "crc32c") == 0) { + return BTRFS_CSUM_TYPE_CRC32; + } else { + error("unknown csum type %s", s); + exit(1); + } + /* not reached */ + return 0; +} + static char *parse_label(const char *input) { int len = strlen(input); @@ -826,6 +839,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv) u64 features = BTRFS_MKFS_DEFAULT_FEATURES; struct mkfs_allocation allocation = { 0 }; struct btrfs_mkfs_config mkfs_cfg; + int csum_type = BTRFS_CSUM_TYPE_CRC32; crc32c_optimization_init(); @@ -835,6 +849,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv) static const struct option long_options[] = { { "alloc-start", required_argument, NULL, 'A'}, { "byte-count", required_argument, NULL, 'b' }, + { "checksum", required_argument, NULL, 'C' }, { "force", no_argument, NULL, 'f' }, { "leafsize", required_argument, NULL, 'l' }, { "label", required_argument, NULL, 'L'}, @@ -854,7 +869,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv) { NULL, 0, NULL, 0} }; - c = getopt_long(argc, argv, "A:b:fl:n:s:m:d:L:O:r:U:VMKq", + c = getopt_long(argc, argv, "A:b:C:fl:n:s:m:d:L:O:r:U:VMKq", long_options, NULL); if (c < 0) break; @@ -932,6 +947,9 @@ int BOX_MAIN(mkfs)(int argc, char **argv) case GETOPT_VAL_SHRINK: shrink_rootdir = true; break; + case 'C': + csum_type = parse_csum_type(optarg); + break; case GETOPT_VAL_HELP: default: print_usage(c != GETOPT_VAL_HELP); @@ -1170,6 +1188,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv) mkfs_cfg.sectorsize = sectorsize; mkfs_cfg.stripesize = stripesize; mkfs_cfg.features = features; + mkfs_cfg.csum_type = csum_type; ret = make_btrfs(fd, &mkfs_cfg); if (ret) {