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Thu, 27 Feb 2020 10:40:51 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 660BFC4479D; Thu, 27 Feb 2020 10:40:51 +0000 (UTC) Received: from codeaurora.org (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: stummala) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3414BC43383; Thu, 27 Feb 2020 10:40:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3414BC43383 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=stummala@codeaurora.org From: Sahitya Tummala To: Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net Date: Thu, 27 Feb 2020 16:10:37 +0530 Message-Id: <1582800037-22834-1-git-send-email-stummala@codeaurora.org> X-Mailer: git-send-email 1.9.1 X-Headers-End: 1j7GbC-00B40k-VR Subject: [f2fs-dev] [PATCH] fsck.f2fs: allow fsck to fix issues with online resize due to SPO X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Add support for new CP flag CP_RESIZEFS_FLAG set during online resize FS. If SPO happens after SB is updated but CP isn't, then allow fsck to fix it. fsck errors without this fix - Info: CKPT version = 6ed7bccb Wrong user_block_count(2233856) [f2fs_do_mount:3365] Checkpoint is polluted the subsequent mount failure without this fix - [ 11.294650] F2FS-fs (sda8): Wrong user_block_count: 2233856 [ 11.300272] F2FS-fs (sda8): Failed to get valid F2FS checkpoint Signed-off-by: Sahitya Tummala --- fsck/mount.c | 30 +++++++++++++++++++++++++++--- include/f2fs_fs.h | 1 + 2 files changed, 28 insertions(+), 3 deletions(-) diff --git a/fsck/mount.c b/fsck/mount.c index e4ba048..374c9c4 100644 --- a/fsck/mount.c +++ b/fsck/mount.c @@ -1128,6 +1128,7 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi) unsigned int total, fsmeta; struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi); struct f2fs_checkpoint *cp = F2FS_CKPT(sbi); + unsigned int flag = get_cp(ckpt_flags); unsigned int ovp_segments, reserved_segments; unsigned int main_segs, blocks_per_seg; unsigned int sit_segs, nat_segs; @@ -1164,7 +1165,30 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi) log_blocks_per_seg = get_sb(log_blocks_per_seg); if (!user_block_count || user_block_count >= segment_count_main << log_blocks_per_seg) { - MSG(0, "\tWrong user_block_count(%u)\n", user_block_count); + if (flag & CP_RESIZEFS_FLAG) { + u32 valid_user_block_cnt; + u32 seg_cnt_main = get_sb(segment_count) - + (get_sb(segment_count_ckpt) + + get_sb(segment_count_sit) + + get_sb(segment_count_nat) + + get_sb(segment_count_ssa)); + + /* validate segment_count_main in sb first */ + if (seg_cnt_main != get_sb(segment_count_main)) { + MSG(0, "inconsistent segment counts found\n"); + return 1; + } + valid_user_block_cnt = ((get_sb(segment_count_main) - + get_cp(overprov_segment_count)) * c.blks_per_seg); + MSG(0, "Info: Fix wrong user_block_count in CP: (%u) -> (%u)\n", + user_block_count, valid_user_block_cnt); + set_cp(user_block_count, valid_user_block_cnt); + c.fix_on = 1; + c.bug_on = 1; + } else { + MSG(0, "\tWrong user_block_count(%u)\n", user_block_count); + return 1; + } return 1; } @@ -3361,6 +3385,8 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi) return -1; } + c.bug_on = 0; + if (sanity_check_ckpt(sbi)) { ERR_MSG("Checkpoint is polluted\n"); return -1; @@ -3380,8 +3406,6 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi) c.fix_on = 1; } - c.bug_on = 0; - if (tune_sb_features(sbi)) return -1; diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h index af31bc5..265f50c 100644 --- a/include/f2fs_fs.h +++ b/include/f2fs_fs.h @@ -678,6 +678,7 @@ struct f2fs_super_block { /* * For checkpoint */ +#define CP_RESIZEFS_FLAG 0x00004000 #define CP_DISABLED_FLAG 0x00001000 #define CP_QUOTA_NEED_FSCK_FLAG 0x00000800 #define CP_LARGE_NAT_BITMAP_FLAG 0x00000400 -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel