From patchwork Thu Jul 27 22:27:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13330889 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A3DBC001DC for ; Thu, 27 Jul 2023 22:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232185AbjG0W1p (ORCPT ); Thu, 27 Jul 2023 18:27:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232226AbjG0W1o (ORCPT ); Thu, 27 Jul 2023 18:27:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA77D2696 for ; Thu, 27 Jul 2023 15:27:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5BEB361EBC for ; Thu, 27 Jul 2023 22:27:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8FEDC433C8; Thu, 27 Jul 2023 22:27:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690496860; bh=A0AtaZ1tqkmcY+8RpB/79VP3dR/AchuTh5yN4L6fQ1w=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=H4Gljcyy0Kea9eFzDu2OPxSJQQj7vS/y+/qEJqI4PrpYHqff4rdSy1nU9DN2PxZhi lMnOl5BQyp5u+vPRFv6kVbrufMvK1OQo/Ux1lGAhbtRzxZ2kQqiv0nmTrqA70dcdGq pWNNT7+n951KvJ5/+WXYmMgCVGFBknRTBn8CB0Dvr5mZIzu88Rrw1bWboN894/tPSN ifEnLNjvvkfBSHAn3/Ym3dNaWU/OsEprzsb+yWrtH3VM7Emyo7B1qHUyyEXrvR4Fld 7wZD6F3KxHOR/0qjUhvPDxwAlM6/CW3iGO8XpP8Zyx4Wms/QCBEWwPW3OoGjWj0ZMs 5GFwuicm7bBFg== Date: Thu, 27 Jul 2023 15:27:40 -0700 Subject: [PATCH 2/2] xfs: track usage statistics of online fsck From: "Darrick J. Wong" To: djwong@kernel.org Cc: linux-xfs@vger.kernel.org Message-ID: <169049623998.921701.9699070296828285039.stgit@frogsfrogsfrogs> In-Reply-To: <169049623967.921701.643201943864960800.stgit@frogsfrogsfrogs> References: <169049623967.921701.643201943864960800.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Darrick J. Wong Track the usage, outcomes, and run times of the online fsck code, and report these values via debugfs. The columns in the file are: * scrubber name * number of scrub invocations * clean objects found * corruptions found * optimizations found * cross referencing failures * inconsistencies found during cross referencing * incomplete scrubs * warnings * number of time scrub had to retry * cumulative amount of time spent scrubbing (microseconds) * number of repair inovcations * successfully repaired objects * cumuluative amount of time spent repairing (microseconds) Signed-off-by: Darrick J. Wong --- fs/xfs/Kconfig | 17 ++ fs/xfs/Makefile | 1 fs/xfs/scrub/repair.c | 11 + fs/xfs/scrub/repair.h | 7 + fs/xfs/scrub/scrub.c | 11 + fs/xfs/scrub/stats.c | 405 +++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/scrub/stats.h | 59 +++++++ fs/xfs/xfs_mount.c | 9 + fs/xfs/xfs_mount.h | 3 fs/xfs/xfs_super.c | 21 ++- 10 files changed, 535 insertions(+), 9 deletions(-) create mode 100644 fs/xfs/scrub/stats.c create mode 100644 fs/xfs/scrub/stats.h diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index 152348b4dece2..c9d653168ad03 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -143,6 +143,23 @@ config XFS_ONLINE_SCRUB If unsure, say N. +config XFS_ONLINE_SCRUB_STATS + bool "XFS online metadata check usage data collection" + default y + depends on XFS_ONLINE_SCRUB + select FS_DEBUG + help + If you say Y here, the kernel will gather usage data about + the online metadata check subsystem. This includes the number + of invocations, the outcomes, and the results of repairs, if any. + This may slow down scrub slightly due to the use of high precision + timers and the need to merge per-invocation information into the + filesystem counters. + + Usage data are collected in /sys/kernel/debug/xfs/scrub. + + If unsure, say N. + config XFS_ONLINE_REPAIR bool "XFS online metadata repair support" default n diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 7a5fa47a30936..87f2756df3708 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -168,6 +168,7 @@ xfs-y += $(addprefix scrub/, \ xfile.o \ ) +xfs-$(CONFIG_XFS_ONLINE_SCRUB_STATS) += scrub/stats.o xfs-$(CONFIG_XFS_RT) += scrub/rtbitmap.o xfs-$(CONFIG_XFS_QUOTA) += scrub/quota.o diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c index c2474cc40d04c..83efe015fab77 100644 --- a/fs/xfs/scrub/repair.c +++ b/fs/xfs/scrub/repair.c @@ -32,6 +32,7 @@ #include "scrub/trace.h" #include "scrub/repair.h" #include "scrub/bitmap.h" +#include "scrub/stats.h" /* * Attempt to repair some metadata, if the metadata is corrupt and userspace @@ -40,8 +41,10 @@ */ int xrep_attempt( - struct xfs_scrub *sc) + struct xfs_scrub *sc, + struct xchk_stats_run *run) { + u64 repair_start; int error = 0; trace_xrep_attempt(XFS_I(file_inode(sc->file)), sc->sm, error); @@ -50,8 +53,11 @@ xrep_attempt( /* Repair whatever's broken. */ ASSERT(sc->ops->repair); + run->repair_attempted = true; + repair_start = xchk_stats_now(); error = sc->ops->repair(sc); trace_xrep_done(XFS_I(file_inode(sc->file)), sc->sm, error); + run->repair_ns += xchk_stats_elapsed_ns(repair_start); switch (error) { case 0: /* @@ -60,14 +66,17 @@ xrep_attempt( */ sc->sm->sm_flags &= ~XFS_SCRUB_FLAGS_OUT; sc->flags |= XREP_ALREADY_FIXED; + run->repair_succeeded = true; return -EAGAIN; case -ECHRNG: sc->flags |= XCHK_NEED_DRAIN; + run->retries++; return -EAGAIN; case -EDEADLOCK: /* Tell the caller to try again having grabbed all the locks. */ if (!(sc->flags & XCHK_TRY_HARDER)) { sc->flags |= XCHK_TRY_HARDER; + run->retries++; return -EAGAIN; } /* diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h index 9ea1eb0aae49d..6eeb113c98a46 100644 --- a/fs/xfs/scrub/repair.h +++ b/fs/xfs/scrub/repair.h @@ -8,6 +8,8 @@ #include "xfs_quota_defs.h" +struct xchk_stats_run; + static inline int xrep_notsupported(struct xfs_scrub *sc) { return -EOPNOTSUPP; @@ -17,7 +19,7 @@ static inline int xrep_notsupported(struct xfs_scrub *sc) /* Repair helpers */ -int xrep_attempt(struct xfs_scrub *sc); +int xrep_attempt(struct xfs_scrub *sc, struct xchk_stats_run *run); void xrep_failure(struct xfs_mount *mp); int xrep_roll_ag_trans(struct xfs_scrub *sc); int xrep_roll_trans(struct xfs_scrub *sc); @@ -63,7 +65,8 @@ int xrep_agi(struct xfs_scrub *sc); static inline int xrep_attempt( - struct xfs_scrub *sc) + struct xfs_scrub *sc, + struct xchk_stats_run *run) { return -EOPNOTSUPP; } diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c index d603efa2a9af3..6864e3fdd5f5a 100644 --- a/fs/xfs/scrub/scrub.c +++ b/fs/xfs/scrub/scrub.c @@ -24,6 +24,7 @@ #include "scrub/trace.h" #include "scrub/repair.h" #include "scrub/health.h" +#include "scrub/stats.h" /* * Online Scrub and Repair @@ -463,8 +464,10 @@ xfs_scrub_metadata( struct file *file, struct xfs_scrub_metadata *sm) { + struct xchk_stats_run run = { }; struct xfs_scrub *sc; struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount; + u64 check_start; int error = 0; BUILD_BUG_ON(sizeof(meta_scrub_ops) != @@ -519,7 +522,9 @@ xfs_scrub_metadata( goto out_teardown; /* Scrub for errors. */ + check_start = xchk_stats_now(); error = sc->ops->scrub(sc); + run.scrub_ns += xchk_stats_elapsed_ns(check_start); if (error == -EDEADLOCK && !(sc->flags & XCHK_TRY_HARDER)) goto try_harder; if (error == -ECHRNG && !(sc->flags & XCHK_NEED_DRAIN)) @@ -553,7 +558,7 @@ xfs_scrub_metadata( * If it's broken, userspace wants us to fix it, and we haven't * already tried to fix it, then attempt a repair. */ - error = xrep_attempt(sc); + error = xrep_attempt(sc, &run); if (error == -EAGAIN) { /* * Either the repair function succeeded or it couldn't @@ -581,12 +586,15 @@ xfs_scrub_metadata( sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT; error = 0; } + if (error != -ENOENT) + xchk_stats_merge(mp, sm, &run); return error; need_drain: error = xchk_teardown(sc, 0); if (error) goto out_sc; sc->flags |= XCHK_NEED_DRAIN; + run.retries++; goto retry_op; try_harder: /* @@ -598,5 +606,6 @@ xfs_scrub_metadata( if (error) goto out_sc; sc->flags |= XCHK_TRY_HARDER; + run.retries++; goto retry_op; } diff --git a/fs/xfs/scrub/stats.c b/fs/xfs/scrub/stats.c new file mode 100644 index 0000000000000..aeb92624176b9 --- /dev/null +++ b/fs/xfs/scrub/stats.c @@ -0,0 +1,405 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_sysfs.h" +#include "xfs_btree.h" +#include "xfs_super.h" +#include "scrub/scrub.h" +#include "scrub/stats.h" +#include "scrub/trace.h" + +struct xchk_scrub_stats { + /* all 32-bit counters here */ + + /* checking stats */ + uint32_t invocations; + uint32_t clean; + uint32_t corrupt; + uint32_t preen; + uint32_t xfail; + uint32_t xcorrupt; + uint32_t incomplete; + uint32_t warning; + uint32_t retries; + + /* repair stats */ + uint32_t repair_invocations; + uint32_t repair_success; + + /* all 64-bit items here */ + + /* runtimes */ + uint64_t checktime_us; + uint64_t repairtime_us; + + /* non-counter state must go at the end for clearall */ + spinlock_t css_lock; +}; + +struct xchk_stats { + struct dentry *cs_debugfs; + struct xchk_scrub_stats cs_stats[XFS_SCRUB_TYPE_NR]; +}; + + +static struct xchk_stats global_stats; + +static const char *name_map[XFS_SCRUB_TYPE_NR] = { + [XFS_SCRUB_TYPE_SB] = "sb", + [XFS_SCRUB_TYPE_AGF] = "agf", + [XFS_SCRUB_TYPE_AGFL] = "agfl", + [XFS_SCRUB_TYPE_AGI] = "agi", + [XFS_SCRUB_TYPE_BNOBT] = "bnobt", + [XFS_SCRUB_TYPE_CNTBT] = "cntbt", + [XFS_SCRUB_TYPE_INOBT] = "inobt", + [XFS_SCRUB_TYPE_FINOBT] = "finobt", + [XFS_SCRUB_TYPE_RMAPBT] = "rmapbt", + [XFS_SCRUB_TYPE_REFCNTBT] = "refcountbt", + [XFS_SCRUB_TYPE_INODE] = "inode", + [XFS_SCRUB_TYPE_BMBTD] = "bmapbtd", + [XFS_SCRUB_TYPE_BMBTA] = "bmapbta", + [XFS_SCRUB_TYPE_BMBTC] = "bmapbtc", + [XFS_SCRUB_TYPE_DIR] = "directory", + [XFS_SCRUB_TYPE_XATTR] = "xattr", + [XFS_SCRUB_TYPE_SYMLINK] = "symlink", + [XFS_SCRUB_TYPE_PARENT] = "parent", + [XFS_SCRUB_TYPE_RTBITMAP] = "rtbitmap", + [XFS_SCRUB_TYPE_RTSUM] = "rtsummary", + [XFS_SCRUB_TYPE_UQUOTA] = "usrquota", + [XFS_SCRUB_TYPE_GQUOTA] = "grpquota", + [XFS_SCRUB_TYPE_PQUOTA] = "prjquota", + [XFS_SCRUB_TYPE_FSCOUNTERS] = "fscounters", +}; + +/* Format the scrub stats into a text buffer, similar to pcp style. */ +STATIC ssize_t +xchk_stats_format( + struct xchk_stats *cs, + char *buf, + size_t remaining) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + ssize_t copied = 0; + int ret = 0; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + if (!name_map[i]) + continue; + + ret = scnprintf(buf, remaining, + "%s %u %u %u %u %u %u %u %u %u %llu %u %u %llu\n", + name_map[i], + (unsigned int)css->invocations, + (unsigned int)css->clean, + (unsigned int)css->corrupt, + (unsigned int)css->preen, + (unsigned int)css->xfail, + (unsigned int)css->xcorrupt, + (unsigned int)css->incomplete, + (unsigned int)css->warning, + (unsigned int)css->retries, + (unsigned long long)css->checktime_us, + (unsigned int)css->repair_invocations, + (unsigned int)css->repair_success, + (unsigned long long)css->repairtime_us); + if (ret <= 0) + break; + + remaining -= ret; + copied += ret; + buf += ret; + } + + return copied > 0 ? copied : ret; +} + +/* Estimate the worst case buffer size required to hold the whole report. */ +STATIC size_t +xchk_stats_estimate_bufsize( + struct xchk_stats *cs) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + size_t field_width; + size_t ret = 0; + + /* 4294967296 plus one space for each u32 field */ + field_width = 11 * (offsetof(struct xchk_scrub_stats, checktime_us) / + sizeof(uint32_t)); + + /* 18446744073709551615 plus one space for each u64 field */ + field_width += 21 * ((offsetof(struct xchk_scrub_stats, css_lock) - + offsetof(struct xchk_scrub_stats, checktime_us)) / + sizeof(uint64_t)); + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + if (!name_map[i]) + continue; + + /* name plus one space */ + ret += 1 + strlen(name_map[i]); + + /* all fields, plus newline */ + ret += field_width + 1; + } + + return ret; +} + +/* Clear all counters. */ +STATIC void +xchk_stats_clearall( + struct xchk_stats *cs) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + spin_lock(&css->css_lock); + memset(css, 0, offsetof(struct xchk_scrub_stats, css_lock)); + spin_unlock(&css->css_lock); + } +} + +#define XFS_SCRUB_OFLAG_UNCLEAN (XFS_SCRUB_OFLAG_CORRUPT | \ + XFS_SCRUB_OFLAG_PREEN | \ + XFS_SCRUB_OFLAG_XFAIL | \ + XFS_SCRUB_OFLAG_XCORRUPT | \ + XFS_SCRUB_OFLAG_INCOMPLETE | \ + XFS_SCRUB_OFLAG_WARNING) + +STATIC void +xchk_stats_merge_one( + struct xchk_stats *cs, + const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run) +{ + struct xchk_scrub_stats *css; + + ASSERT(sm->sm_type < XFS_SCRUB_TYPE_NR); + + css = &cs->cs_stats[sm->sm_type]; + spin_lock(&css->css_lock); + css->invocations++; + if (!(sm->sm_flags & XFS_SCRUB_OFLAG_UNCLEAN)) + css->clean++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT) + css->corrupt++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_PREEN) + css->preen++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_XFAIL) + css->xfail++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_XCORRUPT) + css->xcorrupt++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_INCOMPLETE) + css->incomplete++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_WARNING) + css->warning++; + css->retries += run->retries; + css->checktime_us += howmany_64(run->scrub_ns, NSEC_PER_USEC); + + if (run->repair_attempted) + css->repair_invocations++; + if (run->repair_succeeded) + css->repair_success++; + css->repairtime_us += howmany_64(run->repair_ns, NSEC_PER_USEC); + spin_unlock(&css->css_lock); +} + +/* Merge these scrub-run stats into the global and mount stat data. */ +void +xchk_stats_merge( + struct xfs_mount *mp, + const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run) +{ + xchk_stats_merge_one(&global_stats, sm, run); + xchk_stats_merge_one(mp->m_scrub_stats, sm, run); +} + +/* debugfs boilerplate */ + +static ssize_t +xchk_scrub_stats_read( + struct file *file, + char __user *ubuf, + size_t count, + loff_t *ppos) +{ + struct xchk_stats *cs = file->private_data; + char *buf; + size_t bufsize; + ssize_t avail, ret; + + /* + * This generates stringly snapshot of all the scrub counters, so we + * do not want userspace to receive garbled text from multiple calls. + * If the file position is greater than 0, return a short read. + */ + if (*ppos > 0) + return 0; + + bufsize = xchk_stats_estimate_bufsize(cs); + + buf = kvmalloc(bufsize, XCHK_GFP_FLAGS); + if (!buf) + return -ENOMEM; + + avail = xchk_stats_format(cs, buf, bufsize); + if (avail < 0) { + ret = avail; + goto out; + } + + ret = simple_read_from_buffer(ubuf, count, ppos, buf, avail); +out: + kvfree(buf); + return ret; +} + +static const struct file_operations scrub_stats_fops = { + .open = simple_open, + .read = xchk_scrub_stats_read, +}; + +static ssize_t +xchk_clear_scrub_stats_write( + struct file *file, + const char __user *ubuf, + size_t count, + loff_t *ppos) +{ + struct xchk_stats *cs = file->private_data; + unsigned int val; + int ret; + + ret = kstrtouint_from_user(ubuf, count, 0, &val); + if (ret) + return ret; + + if (val != 1) + return -EINVAL; + + xchk_stats_clearall(cs); + return count; +} + +static const struct file_operations clear_scrub_stats_fops = { + .open = simple_open, + .write = xchk_clear_scrub_stats_write, +}; + +/* Initialize the stats object. */ +STATIC int +xchk_stats_init( + struct xchk_stats *cs, + struct xfs_mount *mp) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) + spin_lock_init(&css->css_lock); + + return 0; +} + +/* Connect the stats object to debugfs. */ +void +xchk_stats_register( + struct xchk_stats *cs, + struct dentry *parent) +{ + if (!parent) + return; + + cs->cs_debugfs = xfs_debugfs_mkdir("scrub", parent); + if (!cs->cs_debugfs) + return; + + debugfs_create_file("stats", 0644, cs->cs_debugfs, cs, + &scrub_stats_fops); + debugfs_create_file("clear_stats", 0400, cs->cs_debugfs, cs, + &clear_scrub_stats_fops); +} + +/* Free all resources related to the stats object. */ +STATIC int +xchk_stats_teardown( + struct xchk_stats *cs) +{ + return 0; +} + +/* Disconnect the stats object from debugfs. */ +void +xchk_stats_unregister( + struct xchk_stats *cs) +{ + debugfs_remove(cs->cs_debugfs); +} + +/* Initialize global stats and register them */ +int __init +xchk_global_stats_setup( + struct dentry *parent) +{ + int error; + + error = xchk_stats_init(&global_stats, NULL); + if (error) + return error; + + xchk_stats_register(&global_stats, parent); + return 0; +} + +/* Unregister global stats and tear them down */ +void +xchk_global_stats_teardown(void) +{ + xchk_stats_unregister(&global_stats); + xchk_stats_teardown(&global_stats); +} + +/* Allocate per-mount stats */ +int +xchk_mount_stats_alloc( + struct xfs_mount *mp) +{ + struct xchk_stats *cs; + int error; + + cs = kvzalloc(sizeof(struct xchk_stats), GFP_KERNEL); + if (!cs) + return -ENOMEM; + + error = xchk_stats_init(cs, mp); + if (error) + goto out_free; + + mp->m_scrub_stats = cs; + return 0; +out_free: + kvfree(cs); + return error; +} + +/* Free per-mount stats */ +void +xchk_mount_stats_free( + struct xfs_mount *mp) +{ + xchk_stats_teardown(mp->m_scrub_stats); + kvfree(mp->m_scrub_stats); + mp->m_scrub_stats = NULL; +} diff --git a/fs/xfs/scrub/stats.h b/fs/xfs/scrub/stats.h new file mode 100644 index 0000000000000..b358ad8d8b90a --- /dev/null +++ b/fs/xfs/scrub/stats.h @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong + */ +#ifndef __XFS_SCRUB_STATS_H__ +#define __XFS_SCRUB_STATS_H__ + +struct xchk_stats_run { + u64 scrub_ns; + u64 repair_ns; + unsigned int retries; + bool repair_attempted; + bool repair_succeeded; +}; + +#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS +struct xchk_stats; + +int __init xchk_global_stats_setup(struct dentry *parent); +void xchk_global_stats_teardown(void); + +int xchk_mount_stats_alloc(struct xfs_mount *mp); +void xchk_mount_stats_free(struct xfs_mount *mp); + +void xchk_stats_register(struct xchk_stats *cs, struct dentry *parent); +void xchk_stats_unregister(struct xchk_stats *cs); + +void xchk_stats_merge(struct xfs_mount *mp, const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run); + +static inline u64 xchk_stats_now(void) { return ktime_get_ns(); } +static inline u64 xchk_stats_elapsed_ns(u64 since) +{ + u64 now = xchk_stats_now(); + + /* + * If the system doesn't have a high enough resolution clock, charge at + * least one nanosecond so that our stats don't report instantaneous + * runtimes. + */ + if (now == since) + return 1; + + return now - since; +} +#else +# define xchk_global_stats_setup(parent) (0) +# define xchk_global_stats_teardown() ((void)0) +# define xchk_mount_stats_alloc(mp) (0) +# define xchk_mount_stats_free(mp) ((void)0) +# define xchk_stats_register(cs, parent) ((void)0) +# define xchk_stats_unregister(cs) ((void)0) +# define xchk_stats_now() (0) +# define xchk_stats_elapsed_ns(x) (0 * (x)) +# define xchk_stats_merge(mp, sm, run) ((void)0) +#endif /* CONFIG_XFS_ONLINE_SCRUB_STATS */ + +#endif /* __XFS_SCRUB_STATS_H__ */ diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index fb87ffb48f7fe..0a0fd19573d8c 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -34,6 +34,7 @@ #include "xfs_health.h" #include "xfs_trace.h" #include "xfs_ag.h" +#include "scrub/stats.h" static DEFINE_MUTEX(xfs_uuid_table_mutex); static int xfs_uuid_table_size; @@ -716,9 +717,11 @@ xfs_mountfs( if (error) goto out_remove_sysfs; + xchk_stats_register(mp->m_scrub_stats, mp->m_debugfs); + error = xfs_error_sysfs_init(mp); if (error) - goto out_del_stats; + goto out_remove_scrub_stats; error = xfs_errortag_init(mp); if (error) @@ -1033,7 +1036,8 @@ xfs_mountfs( xfs_errortag_del(mp); out_remove_error_sysfs: xfs_error_sysfs_del(mp); - out_del_stats: + out_remove_scrub_stats: + xchk_stats_unregister(mp->m_scrub_stats); xfs_sysfs_del(&mp->m_stats.xs_kobj); out_remove_sysfs: xfs_sysfs_del(&mp->m_kobj); @@ -1105,6 +1109,7 @@ xfs_unmountfs( xfs_errortag_del(mp); xfs_error_sysfs_del(mp); + xchk_stats_unregister(mp->m_scrub_stats); xfs_sysfs_del(&mp->m_stats.xs_kobj); xfs_sysfs_del(&mp->m_kobj); } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 0b86bf10a4cc3..a25eece3be2b9 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -214,6 +214,9 @@ typedef struct xfs_mount { struct xfs_kobj m_error_meta_kobj; struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; struct xstats m_stats; /* per-fs stats */ +#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS + struct xchk_stats *m_scrub_stats; +#endif xfs_agnumber_t m_agfrotor; /* last ag where space found */ atomic_t m_agirotor; /* last ag dir inode alloced */ diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 31ac4744fdbec..09638e8fb4eef 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -42,6 +42,7 @@ #include "xfs_xattr.h" #include "xfs_iunlink_item.h" #include "xfs_dahash_test.h" +#include "scrub/stats.h" #include #include @@ -1144,6 +1145,7 @@ xfs_fs_put_super( xfs_unmountfs(mp); xfs_freesb(mp); + xchk_mount_stats_free(mp); free_percpu(mp->m_stats.xs_stats); xfs_mount_list_del(mp); xfs_inodegc_free_percpu(mp); @@ -1571,9 +1573,13 @@ xfs_fs_fill_super( goto out_destroy_inodegc; } + error = xchk_mount_stats_alloc(mp); + if (error) + goto out_free_stats; + error = xfs_readsb(mp, flags); if (error) - goto out_free_stats; + goto out_free_scrub_stats; error = xfs_finish_flags(mp); if (error) @@ -1752,6 +1758,8 @@ xfs_fs_fill_super( xfs_filestream_unmount(mp); out_free_sb: xfs_freesb(mp); + out_free_scrub_stats: + xchk_mount_stats_free(mp); out_free_stats: free_percpu(mp->m_stats.xs_stats); out_destroy_inodegc: @@ -2398,11 +2406,15 @@ init_xfs_fs(void) if (error) goto out_free_stats; + error = xchk_global_stats_setup(xfs_debugfs); + if (error) + goto out_remove_stats_kobj; + #ifdef DEBUG xfs_dbg_kobj.kobject.kset = xfs_kset; error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); if (error) - goto out_remove_stats_kobj; + goto out_remove_scrub_stats; #endif error = xfs_qm_init(); @@ -2419,8 +2431,10 @@ init_xfs_fs(void) out_remove_dbg_kobj: #ifdef DEBUG xfs_sysfs_del(&xfs_dbg_kobj); + out_remove_scrub_stats: +#endif + xchk_global_stats_teardown(); out_remove_stats_kobj: -#endif xfs_sysfs_del(&xfsstats.xs_kobj); out_free_stats: free_percpu(xfsstats.xs_stats); @@ -2451,6 +2465,7 @@ exit_xfs_fs(void) #ifdef DEBUG xfs_sysfs_del(&xfs_dbg_kobj); #endif + xchk_global_stats_teardown(); xfs_sysfs_del(&xfsstats.xs_kobj); free_percpu(xfsstats.xs_stats); kset_unregister(xfs_kset);