From patchwork Mon Feb 29 05:18:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gang He X-Patchwork-Id: 8448871 Return-Path: X-Original-To: patchwork-ocfs2-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BDC829F38C for ; Mon, 29 Feb 2016 05:20:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8A43820266 for ; Mon, 29 Feb 2016 05:20:18 +0000 (UTC) Received: from aserp1040.oracle.com (aserp1040.oracle.com [141.146.126.69]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 37A0320103 for ; Mon, 29 Feb 2016 05:20:17 +0000 (UTC) Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u1T5JicQ010029 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Feb 2016 05:19:44 GMT Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userv0022.oracle.com (8.14.4/8.13.8) with ESMTP id u1T5Jhm8020026 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 29 Feb 2016 05:19:43 GMT Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1aaGFD-0001nT-B3; Sun, 28 Feb 2016 21:19:43 -0800 Received: from userv0022.oracle.com ([156.151.31.74]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1aaGEO-0001kc-IF for ocfs2-devel@oss.oracle.com; Sun, 28 Feb 2016 21:18:52 -0800 Received: from aserp1020.oracle.com (aserp1020.oracle.com [141.146.126.67]) by userv0022.oracle.com (8.14.4/8.13.8) with ESMTP id u1T5Ipd9018754 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Mon, 29 Feb 2016 05:18:52 GMT Received: from userp2040.oracle.com (userp2040.oracle.com [156.151.31.90]) by aserp1020.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u1T5IpMf008152 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Mon, 29 Feb 2016 05:18:51 GMT Received: from pps.filterd (userp2040.oracle.com [127.0.0.1]) by userp2040.oracle.com (8.15.0.59/8.15.0.59) with SMTP id u1T5FPuX004715 for ; Mon, 29 Feb 2016 05:18:51 GMT Received: from prv3-mh.provo.novell.com (victor.provo.novell.com [137.65.250.26]) by userp2040.oracle.com with ESMTP id 21b2e60n5f-1 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 29 Feb 2016 05:18:50 +0000 Received: from ghe-oldpc.apac.novell.com (prv-ext-foundry1int.gns.novell.com [137.65.251.240]) by prv3-mh.provo.novell.com with ESMTP (TLS encrypted); Sun, 28 Feb 2016 22:18:39 -0700 From: Gang He To: mfasheh@suse.com, rgoldwyn@suse.de, ghe@suse.com Date: Mon, 29 Feb 2016 13:18:01 +0800 Message-Id: <1456723082-13838-5-git-send-email-ghe@suse.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1456723082-13838-1-git-send-email-ghe@suse.com> References: <1456723082-13838-1-git-send-email-ghe@suse.com> X-Proofpoint-SPF-Result: permerror X-Proofpoint-SPF-Record: v=spf1 ip4:137.65.0.0/16 ip4:151.155.28.0/17 ip4:149.44.0.0/16 ip4:147.2.0.0/16 ip4:164.99.0.0/16 ip4:130.57.0.0/16 ip4:192.31.114.0/24 ip4:195.135.221.0/24 ip4:195.135.220.0/24 ip4:69.7.179.0/24 include:_spf2.suse.com -all X-ServerName: victor.provo.novell.com X-Proofpoint-Virus-Version: vendor=nai engine=5800 definitions=8089 signatures=670696 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1601100000 definitions=main-1602290103 Cc: linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com Subject: [Ocfs2-devel] [PATCH v4 4/5] ocfs2: check/fix inode block for online file check X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Source-IP: userv0022.oracle.com [156.151.31.74] X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement online check or fix inode block during reading a inode block to memory. Signed-off-by: Gang He Tested-by: Eric Ren Reviewed-by: Mark Fasheh --- fs/ocfs2/inode.c | 225 +++++++++++++++++++++++++++++++++++++++++++++++-- fs/ocfs2/ocfs2_trace.h | 2 + 2 files changed, 218 insertions(+), 9 deletions(-) diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index 8f87e05..6ce531e 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -53,6 +53,7 @@ #include "xattr.h" #include "refcounttree.h" #include "ocfs2_trace.h" +#include "filecheck.h" #include "buffer_head_io.h" @@ -74,6 +75,14 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, struct inode *inode, struct buffer_head *fe_bh); +static int ocfs2_filecheck_read_inode_block_full(struct inode *inode, + struct buffer_head **bh, + int flags, int type); +static int ocfs2_filecheck_validate_inode_block(struct super_block *sb, + struct buffer_head *bh); +static int ocfs2_filecheck_repair_inode_block(struct super_block *sb, + struct buffer_head *bh); + void ocfs2_set_inode_flags(struct inode *inode) { unsigned int flags = OCFS2_I(inode)->ip_attr; @@ -127,6 +136,7 @@ struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno) struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, int sysfile_type) { + int rc = 0; struct inode *inode = NULL; struct super_block *sb = osb->sb; struct ocfs2_find_inode_args args; @@ -161,12 +171,17 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, } trace_ocfs2_iget5_locked(inode->i_state); if (inode->i_state & I_NEW) { - ocfs2_read_locked_inode(inode, &args); + rc = ocfs2_read_locked_inode(inode, &args); unlock_new_inode(inode); } if (is_bad_inode(inode)) { iput(inode); - inode = ERR_PTR(-ESTALE); + if ((flags & OCFS2_FI_FLAG_FILECHECK_CHK) || + (flags & OCFS2_FI_FLAG_FILECHECK_FIX)) + /* Return OCFS2_FILECHECK_ERR_XXX related errno */ + inode = ERR_PTR(rc); + else + inode = ERR_PTR(-ESTALE); goto bail; } @@ -409,7 +424,7 @@ static int ocfs2_read_locked_inode(struct inode *inode, struct ocfs2_super *osb; struct ocfs2_dinode *fe; struct buffer_head *bh = NULL; - int status, can_lock; + int status, can_lock, lock_level = 0; u32 generation = 0; status = -EINVAL; @@ -477,7 +492,7 @@ static int ocfs2_read_locked_inode(struct inode *inode, mlog_errno(status); return status; } - status = ocfs2_inode_lock(inode, NULL, 0); + status = ocfs2_inode_lock(inode, NULL, lock_level); if (status) { make_bad_inode(inode); mlog_errno(status); @@ -494,16 +509,32 @@ static int ocfs2_read_locked_inode(struct inode *inode, } if (can_lock) { - status = ocfs2_read_inode_block_full(inode, &bh, - OCFS2_BH_IGNORE_CACHE); + if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_CHK) + status = ocfs2_filecheck_read_inode_block_full(inode, + &bh, OCFS2_BH_IGNORE_CACHE, 0); + else if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_FIX) + status = ocfs2_filecheck_read_inode_block_full(inode, + &bh, OCFS2_BH_IGNORE_CACHE, 1); + else + status = ocfs2_read_inode_block_full(inode, + &bh, OCFS2_BH_IGNORE_CACHE); } else { status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); /* * If buffer is in jbd, then its checksum may not have been * computed as yet. */ - if (!status && !buffer_jbd(bh)) - status = ocfs2_validate_inode_block(osb->sb, bh); + if (!status && !buffer_jbd(bh)) { + if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_CHK) + status = ocfs2_filecheck_validate_inode_block( + osb->sb, bh); + else if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_FIX) + status = ocfs2_filecheck_repair_inode_block( + osb->sb, bh); + else + status = ocfs2_validate_inode_block( + osb->sb, bh); + } } if (status < 0) { mlog_errno(status); @@ -531,11 +562,24 @@ static int ocfs2_read_locked_inode(struct inode *inode, BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); + if (buffer_dirty(bh) && !buffer_jbd(bh)) { + if (can_lock) { + ocfs2_inode_unlock(inode, lock_level); + lock_level = 1; + ocfs2_inode_lock(inode, NULL, lock_level); + } + status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); + if (status < 0) { + mlog_errno(status); + goto bail; + } + } + status = 0; bail: if (can_lock) - ocfs2_inode_unlock(inode, 0); + ocfs2_inode_unlock(inode, lock_level); if (status < 0) make_bad_inode(inode); @@ -1396,6 +1440,169 @@ bail: return rc; } +static int ocfs2_filecheck_validate_inode_block(struct super_block *sb, + struct buffer_head *bh) +{ + int rc = 0; + struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; + + trace_ocfs2_filecheck_validate_inode_block( + (unsigned long long)bh->b_blocknr); + + BUG_ON(!buffer_uptodate(bh)); + + /* + * Call ocfs2_validate_meta_ecc() first since it has ecc repair + * function, but we should not return error immediately when ecc + * validation fails, because the reason is quite likely the invalid + * inode number inputed. + */ + rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); + if (rc) { + mlog(ML_ERROR, + "Filecheck: checksum failed for dinode %llu\n", + (unsigned long long)bh->b_blocknr); + rc = -OCFS2_FILECHECK_ERR_BLOCKECC; + } + + if (!OCFS2_IS_VALID_DINODE(di)) { + mlog(ML_ERROR, + "Filecheck: invalid dinode #%llu: signature = %.*s\n", + (unsigned long long)bh->b_blocknr, 7, di->i_signature); + rc = -OCFS2_FILECHECK_ERR_INVALIDINO; + goto bail; + } else if (rc) + goto bail; + + if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { + mlog(ML_ERROR, + "Filecheck: invalid dinode #%llu: i_blkno is %llu\n", + (unsigned long long)bh->b_blocknr, + (unsigned long long)le64_to_cpu(di->i_blkno)); + rc = -OCFS2_FILECHECK_ERR_BLOCKNO; + goto bail; + } + + if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { + mlog(ML_ERROR, + "Filecheck: invalid dinode #%llu: OCFS2_VALID_FL " + "not set\n", + (unsigned long long)bh->b_blocknr); + rc = -OCFS2_FILECHECK_ERR_VALIDFLAG; + goto bail; + } + + if (le32_to_cpu(di->i_fs_generation) != + OCFS2_SB(sb)->fs_generation) { + mlog(ML_ERROR, + "Filecheck: invalid dinode #%llu: fs_generation is %u\n", + (unsigned long long)bh->b_blocknr, + le32_to_cpu(di->i_fs_generation)); + rc = -OCFS2_FILECHECK_ERR_GENERATION; + goto bail; + } + +bail: + return rc; +} + +static int ocfs2_filecheck_repair_inode_block(struct super_block *sb, + struct buffer_head *bh) +{ + int changed = 0; + struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; + + if (!ocfs2_filecheck_validate_inode_block(sb, bh)) + return 0; + + trace_ocfs2_filecheck_repair_inode_block( + (unsigned long long)bh->b_blocknr); + + if (ocfs2_is_hard_readonly(OCFS2_SB(sb)) || + ocfs2_is_soft_readonly(OCFS2_SB(sb))) { + mlog(ML_ERROR, + "Filecheck: cannot repair dinode #%llu " + "on readonly filesystem\n", + (unsigned long long)bh->b_blocknr); + return -OCFS2_FILECHECK_ERR_READONLY; + } + + if (buffer_jbd(bh)) { + mlog(ML_ERROR, + "Filecheck: cannot repair dinode #%llu, " + "its buffer is in jbd\n", + (unsigned long long)bh->b_blocknr); + return -OCFS2_FILECHECK_ERR_INJBD; + } + + if (!OCFS2_IS_VALID_DINODE(di)) { + /* Cannot fix invalid inode block */ + return -OCFS2_FILECHECK_ERR_INVALIDINO; + } + + if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { + /* Cannot just add VALID_FL flag back as a fix, + * need more things to check here. + */ + return -OCFS2_FILECHECK_ERR_VALIDFLAG; + } + + if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { + di->i_blkno = cpu_to_le64(bh->b_blocknr); + changed = 1; + mlog(ML_ERROR, + "Filecheck: reset dinode #%llu: i_blkno to %llu\n", + (unsigned long long)bh->b_blocknr, + (unsigned long long)le64_to_cpu(di->i_blkno)); + } + + if (le32_to_cpu(di->i_fs_generation) != + OCFS2_SB(sb)->fs_generation) { + di->i_fs_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation); + changed = 1; + mlog(ML_ERROR, + "Filecheck: reset dinode #%llu: fs_generation to %u\n", + (unsigned long long)bh->b_blocknr, + le32_to_cpu(di->i_fs_generation)); + } + + if (changed || ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check)) { + ocfs2_compute_meta_ecc(sb, bh->b_data, &di->i_check); + mark_buffer_dirty(bh); + mlog(ML_ERROR, + "Filecheck: reset dinode #%llu: compute meta ecc\n", + (unsigned long long)bh->b_blocknr); + } + + return 0; +} + +static int +ocfs2_filecheck_read_inode_block_full(struct inode *inode, + struct buffer_head **bh, + int flags, int type) +{ + int rc; + struct buffer_head *tmp = *bh; + + if (!type) /* Check inode block */ + rc = ocfs2_read_blocks(INODE_CACHE(inode), + OCFS2_I(inode)->ip_blkno, + 1, &tmp, flags, + ocfs2_filecheck_validate_inode_block); + else /* Repair inode block */ + rc = ocfs2_read_blocks(INODE_CACHE(inode), + OCFS2_I(inode)->ip_blkno, + 1, &tmp, flags, + ocfs2_filecheck_repair_inode_block); + + /* If ocfs2_read_blocks() got us a new bh, pass it up. */ + if (!rc && !*bh) + *bh = tmp; + + return rc; +} + int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, int flags) { diff --git a/fs/ocfs2/ocfs2_trace.h b/fs/ocfs2/ocfs2_trace.h index 6cb019b..d9205e0 100644 --- a/fs/ocfs2/ocfs2_trace.h +++ b/fs/ocfs2/ocfs2_trace.h @@ -1540,6 +1540,8 @@ DEFINE_OCFS2_ULL_INT_EVENT(ocfs2_read_locked_inode); DEFINE_OCFS2_INT_INT_EVENT(ocfs2_check_orphan_recovery_state); DEFINE_OCFS2_ULL_EVENT(ocfs2_validate_inode_block); +DEFINE_OCFS2_ULL_EVENT(ocfs2_filecheck_validate_inode_block); +DEFINE_OCFS2_ULL_EVENT(ocfs2_filecheck_repair_inode_block); TRACE_EVENT(ocfs2_inode_is_valid_to_delete, TP_PROTO(void *task, void *dc_task, unsigned long long ino,