Ceph scrub errors

Last UpdatedMarch 5, 2024

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a (mon. You can verify an inode was scrubbed by $ ceph health detail HEALTH_ERR 3 scrub errors; Possible data damage: 1 pg inconsistent OSD_SCRUB_ERRORS 3 scrub errors PG_DAMAGED Possible data damage: 1 pg inconsistent pg 11. Feb 5, 2018 · However, since it has been up and running at what seems to be random times we end up with errors similar to: 2018-02-05 06:48:16. State variables¶ Periodic tick state is !must_scrub &&!must_deep_scrub &&!time_for_deep. The pg repair command will not solve every problem. 错误描述 # ceph health detail HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent OSD_SCRUB_ERRORS 1 scrub errors PG_DAMAGED Possible data damage: 1 pg inconsistent pg 2. 1c1 is active+clean+inconsistent, acting [21,25,30] 2 scrub errors. id>. 118985, current state undersized+degraded+peered, last acting [6] pg 1. DAEMON_OLD_VERSION. com/ceph/ceph/pull/16292) but the tweak to this particular one is Nov 25, 2022 · Definition. df deep-scrub 3 errors. Ceph File System Scrub. 927 INFO:tasks. You can always try to run ceph pg repair 17. 39c is active+clean+inconsistent, acting [2,60,32] [ceph: root@host01 /]# ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. Feb 8, 2021 · Every value for scrub configurations are the default values. It is also the default value. log 2017-03-29T18:26:25. The value is by default 5. Table 1. ¶. Sometime it does, something it does OSD_SCRUB_ERRORS Recent OSD scrubs have discovered inconsistencies. OSD_SCRUB_ERRORS 1 scrub errors. after pg repair it is resolving. It was working perfectly in 0. 714294 7f001b4d5700 -1 WARNING: the following dangerous and experimental features are enabled: * 2016-07-13T09:32:24. Thanks for the reply. HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent. 307 is active + clean + inconsistent, acting [69, 174] ceph pg repair # ceph pg repair 2. OSD Config Reference. 1 large omap objects. 2 deep-scrub 2 errors 2017-03-29T18:26:35. See if it has any and where they are stuck. 17ae is active+clean+inconsistent, acting [145,107,101] 1 scrub errors A look into the OSD logs [145, 107, 101] shows a lossy connection Apr 18, 2019 · the lines start like this. The identifier is a terse pseudo-human-readable (i. 32" pg 1. 87) "ceph health detail" and "ceph --status" show scrub errors (as before) and number of errors change upon scrub without any relevant messages in logs Ceph File System Scrub ¶. ceph:Still waiting for all pgs to be scrubbed. 6 is active+clean+inconsistent, acting [0,1,2] 2 scrub errors; Determine why the placement group is inconsistent. A minimal Ceph OSD Daemon configuration sets osd journal size (for Filestore), host, and uses default values for nearly Apr 8, 2021 · /ceph/teuthology-archive/pdonnell-2021-05-01_09:07:09-fs-wip-pdonnell-testing-20210501. gz, all pgs eventually become active+clean, but osd. The following table lists the most common error messages that are returned by the ceph health detail command. Because scrub handles errors osd: scrub stat mismatch, got 18/19 objects, 14/15 clones, 22478527/25385282 bytes. OSD_TOO_MANY_REPAIRS¶ The count of read repairs has exceeded the config value threshold mon_osd_warn_num_repaired (default: 10). For more information, see Repairing PG Inconsistencies. cluster [ERR] overall HEALTH_ERR 5 scrub errors; Possible data damage: 1 pg inconsistent After further investigation we found pg 0. 11 crashed. [ceph: root@host01 /]# ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. Scrubbing is a mechanism in Ceph to maintain data integrity, similar to fsck in the file system, that will help in finding if the existing data is inconsistent. 500%); 158 scrub errors $ ceph health detail | grep "pg 1. 0) 7860 : cluster 0 osdmap e3595: 8 total, 8 up, 8 in 2024-03-22T09:20:00. Previous scrub of the same directory inode is treated as passed because the inode is marked dirty Related to Ceph - Bug #9158: osd crashed in upgrade:dumpling-x:stress-split-master-distro-basic-vps suite Duplicate: 08/18/2014: Duplicates Ceph - Bug #8777: osd Deep scrub errors running cephfs kernel client on jewel deep-scrub 2. A cluster that has a larger number of placement groups (for example, 150 per We can't see anything unusual with ceph pg query, the scrub timestamps are all current, the output of ceph pg query is attached at the end of this post Other PGs on the same OSD also have a significantly older timestamp (beyond the max time between scrubs), yet they are completely ignored. Updated over 11 years ago. 1 什么是 Scrub. The table provides links to corresponding sections that explain the errors and point to specific procedures to fix the problems. So for each pg you need to run this command. Monitor. Current scrub and repair is fairly primitive. Scrub can be classified into two parts: Forward Scrub: In which the scrub operation starts at the root of the file system (or a sub directory) and looks at everything that can be touched in the hierarchy to Jan 29, 2023 · ceph health detail HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent [ERR] OSD_SCRUB_ERRORS: 1 scrub errors [ERR] PG_DAMAGED: Possible data damage: 1 pg inconsistent pg 1. smithi048. Sep 7, 2022 · はじめに. Andrew. OSD_FLAGS. We al This update was made using the script "backport-resolve-issue". HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. The scrub tag is used to differentiate scrubs and also to mark each inode’s first data object in the default data pool (where the backtrace information is stored) with a scrub_tag extended attribute with the value of the tag. Scrub Reservations¶ An OSD daemon command dumps total local and remote reservations: July 7, 2014 sysadmin Storage. the xyz. Scrub can be classified into two parts: Forward Scrub: In which the scrub operation starts at the root of the filesystem (or a sub directory) and looks at everything that can be touched in the hierarchy to ensure consistency. Currently all we see is object_info_inconsistency and attr_value_mismatch and no shard errors. 826 INFO:teuthology. The most common inconsistencies are: Objects have an incorrect size. 882 INFO:teuthology. A subsequent 'ceph health detail' shows scrub errors. Block size. orchestra. 2) The user should be able to query the contents of the replica objects in the event of an inconsistency (including data payload, xattrs, and omap). CephFS provides the cluster admin (operator) to check consistency of a filesystem via a set of scrub commands. 停電から回復したKubernetesクラスターの状態を確認していたところ、1つのPod (gitbucket)だけが ContainerCreating 状態のまま長時間停止していることが分かりました。. What this means. $ ceph pg deep-scrub <pg. Periodic tick after osd_deep_scrub_interval state is!must_scrub &&!must_deep_scrub && time_for_deep. Ceph OSD Daemons are numerically identified I can repair the inconsistent pg by "ceph pg repair": @[root@ceph177 ~]# ceph health detail HEALTH_ERR 12 pgs inconsistent; 38 scrub errors; too many PGs per OSD (601 > max 300) Ceph ensures data integrity by scrubbing placement groups. Start the deep scrubbing process on the placement group. gz shows also that the "stat mismatch" first occurs during deep scrub on pg 3. Scrub can be classified into two parts: Forward Scrub: In which the scrub operation starts at the root of the file system (or a sub directory) and looks at everything that can be touched in the hierarchy to Jul 3, 2019 · We can see with ceph -s that we have some inconsistent PGs, and possible data damage. Or: [root@vpsapohmcs01 ~]# ceph health detail HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent OSD_SCRUB_ERRORS 1 scrub errors One or more PGs has not been scrubbed recently. 41 mark_unfound_lost revert. Oct 20, 2014 · Regarding smart errors, you can sometimes ask the drive for its health through the raid controller : smartctl -a -d sat+megaraid,3 /dev/sdj. Boolean. A simple command can give use the PG: S = Do regular scrub. 00000000:head on disk size (3737294) does not match object info On Tue, Mar 26, 2019 at 8:19 AM solarflow99 <solarflow99@xxxxxxxxx> wrote: > > I noticed my cluster has scrub errors but the deep-scrub command doesn't show any errors. 11 to repair After a while osd. OSD_TOO_MANY_REPAIRS The count of read repairs has exceeded the config value threshold mon_osd_warn_num_repaired (default: 10). Description. Default. 27 is active+clean+inconsistent, acting [7,2,16] Apr 26, 2019 · A simple command can give use the PG: bash $ sudo ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 17. Same procedure for mtime. 33c6 is active+clean+inconsistent, acting [355,138,29] One or more storage cluster flags of interest has been set. 721440 7f001b4d5700 -1 WARNING: the following dangerous and This snowballed into me pondering about what clog messages really should look like (https://github. Scrub是 Ceph 集群副本进行数据扫描的操作，用于检测副本间数据的一致性，包括 scrub 和 deep-scrub。 其中scrub 只对元数据信息进行扫描，相对比较快；而deep-scrub 不仅对元数据进行扫描，还会对存储的数据进行扫描，相对比较慢。 1. the next thing to do is wait for ceph to do its thing, it should also do a scrub and deep scrub of all the files now which will leave you with a clean health. The maximum number of simultaneous scrub operations for a Ceph OSD Daemon. 290476 7f2279192700 0 log [ERR] : 2. pg 4. every time. In the case of erasure-coded and BlueStore pools, Ceph will automatically perform repairs if osd_scrub_auto_repair (default false) is set to true and if no more than osd_scrub_auto_repair_num_errors (default 5) errors are found. 6 is active+clean+inconsistent, acting [0,1,2] 2 scrub errors. # ceph health detail HEALTH_ERR 1 pgs inconsistent; 1 scrub errors pg 40. The most common inconsistencies are: Initiated scrub state is must_scrub && !must_deep_scrub && !time_for_deep. Assuming you have a cluster state similar to this one: health HEALTH_ERR 1 pgs inconsistent; 2 scrub errors Let’s trouble shoot this! Find the PG. 3 2:dfd961c9:::100000000aa. Watch the ceph log for the result of the scrub. Yet PGs not deep scrubbed in time keeps increasing and it is at 96 right now. 103 is the placement group in question and tried to repair it: ceph1:~# ceph pg repair 0. 106 to deep-scrub. / In jewel 10. log and ceph --watch-warn remains silent when "scrub" or "deep-scrub" found an inconsistency. First, determine whether the monitors have a quorum. Raw. # ceph health detail. run. Log in to the Cephadm shell: Example. pg 1. In most cases, errors during scrubbing cause inconsistency within placement groups. $ ceph -w | grep <pg. Aug 9, 2018 · 工作环境中出现问题的 Ceph 的数据是双备份的，OSD 35 所在的磁盘出现了坏道，表现出来的现象是 ceph 经常会报出存储在 OSD 35 上的 pg 数据不一致，以及报出 scrub error，以下是 ceph health detail 命令输出新相关信息。 [root@vpsapohmcs01 ~]# ceph health detail HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent OSD_SCRUB_ERRORS 1 scrub errors /var/log/ceph/ceph. 原因はPVCがmountできないことだったのですが、原因は停電によってext4のjournal dataが残っ Add new Bluestore OSDs to Filestore cluster leads to scrub errors (union_shard_errors=missing) Added by Aleksandr Rudenko about 4 years ago. Initiated deep scrub state is must_scrub && must_deep_scrub. Some techniques to handle issues and work around them. 1. ; cluster: id: cec9ca98-b59f-4d91-8ddd-43802195c735 health: HEALTH_ERR 1 scrub errors Possible data damage: 1 pg inconsistent data: pools: 10 pools, 1120 pgs objects: 29. There are several improvements which need to be made: 1) There needs to be a way to query the results of the most recent scrub on a pg. instructing pg 11. osd. Setting this to true will enable automatic pg repair when errors are found in deep-scrub. Now (on 0. Apr 27, 2015 · bash $ sudo ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 17. e. Placement groups perform the function of placing objects (as a group) into OSDs. Run the ceph health command or the ceph -s command and if Ceph shows HEALTH_OK then there is a monitor quorum. 1. 581002 26686 : cluster [ERR] Health check update: Possible data damage: 4 lweidig. Forum: Proxmox VE: Installation and configuration. Debug output To get more debugging information from ceph-fuse, try running in the foreground with logging to the console (-d) and enabling client debug (--debug-client=20), enabling prints for each message sent (--debug-ms=1). smithi162:Running: 'sudo adjust-ulimits ceph We can see that this occurs during deep scrubbing: ceph. 69 to repair pg repair 需要等待几分钟 [ceph: root@host01 /]# ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. 1c1 and is acting on OSD 21, 25 and 30. The command is a bit odd, the number (3 here) chooses the disk, the /dev/sdj bit is a space filler. ceph. Considering 4 as best-effort, 5 is low. Feb 5, 2018. CephFS provides the cluster admin (operator) to check consistency of a file system via a set of scrub commands. Today I found some errors in my ceph cluster: $ ceph health detail. ceph health detail HEALTH_ERR 2 pgs inconsistent; 2 scrub errors; crush map has legacy tunables (require bobtail, min is firefly) pg 6. 2 I got some scrub errors. 2. Start the deep scrubbing process on the placement group: At present the auto repair does not handle stat mismatch scrub errors. smithi010. ceph pg 1. Without snapshots there is no info from list-inconsistent-snapset which included some additional size checking. Initiated scrub state is must_scrub &&!must_deep_scrub &&!time_for_deep Identify the inconsistent placement group (s) by executing the following: cephuser@adm > ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. However, if more than osd scrub auto repair num errors errors are found a repair is NOT performed. 2, “Inconsistent Placement Groups” Copied from Bug #23267: scrub errors not cleared on replicas can cause inconsistent pg state when replica takes over primary added #2 Updated by David Zafman about 5 years ago Copied to Backport #23486 : jewel: scrub errors not cleared on replicas can cause inconsistent pg state when replica takes over primary added when scrub errors are due to disk read errors, ceph status can say "likely disk errors" 2 scrub errors pg 0. 897409+0000 mon. 32 Dec 5, 2018 · 1. 5. 6 is active+clean+inconsistent, acting [0,1,2] 2 scrub errors What This Means. Health Code. 0) 7863 : cluster 4 [ERR] OSD_SCRUB_ERRORS: 1 scrub errors 2024-03-22T09:20:00. D = Do deep scrub. There is a finite set of possible health messages that a Ceph cluster can raise – these are defined as health checks which have unique identifiers. Ceph does not automatically repair PGs when they are found to OSD_SCRUB_ERRORS¶ Recent OSD scrubs have discovered inconsistencies. Output from ceph -s: cluster: id: xxxxxxxxxxxxxxxxx. 1, “Identifying Problems scrub errors. 1c1 and check if this will fix your issue You can configure Ceph OSD Daemons in the Ceph configuration file (or in recent releases, the central config store), but Ceph OSD Daemons can use the default values and a very minimal configuration. History #1 Updated by Nathan Cutler almost 7 years ago Copied from Bug Placement groups (PGs) are subsets of each logical Ceph pool. Thanks for making me aware of the potential problem for my system. # ceph health detail HEALTH_ERR 1 scrub errors; Possible data damage: 1 pg inconsistent OSD_SCRUB_ERRORS 1 scrub errors PG_DAMAGED Possible data damage: 1 pg inconsistent pg 2. 040415-distro-basic-smithi/6087908/teuthology. false. It is intended to enable tools (such as UIs) to make sense of health checks, and present them in a HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. For more information, see Troubleshooting PGs. 550800, current state undersized+degraded+peered, last acting [6] Some more info from the mds log on the particular inode. 000202 The ceph pg dump command now prints three additional columns: LAST_SCRUB_DURATION shows the duration (in seconds) of the last completed scrub; SCRUB_SCHEDULING conveys whether a PG is scheduled to be scrubbed at a specified time, whether it is queued for scrubbing, or whether it is being scrubbed; OBJECTS_SCRUBBED shows the number of objects We would like to show you a description here but the site won’t allow us. [root@host01 ~]# cephadm shell. 0. Because scrub handles errors only for data 2016-07-13T09:32:24. The most common inconsistencies are: Backward scrub (aka cephfs-data-scan) operates in two stages: scan_extents: for all data objects, update xattrs on the 0th object (i. 7 and earlier. PGs will not scrub if they are not flagged as clean, which may happen if they are misplaced or degraded (see PG_AVAILABILITY and PG_DEGRADED 2620/523934 objects misplaced (0. 932625 7fb89fbb7700 -1 log_channel(cluster) log [ERR] : 1. 000194+0000 mon. Trigger a deep-scrub on the placement group. 103 on osd. 875 INFO:teuthology. 7 TiB / 8. 00000000) object for the inode to record the highest object seen for a given inode, so as to calculate the size of the inode. like a variable name) string. com/yuriw-2023-02-16_19:08:52-fs-wip-yuri3-testing-2023-02-16-0752-quincy-distro-default-smithi/7176546/ Brought to you by the Ceph Foundation. 6 is active+clean+inconsistent, acting [0,1,2] 2 scrub Nov 9, 2020 · osd scrub priority – is the priority given to a scrub (light and deep) operation automatically scheduled. Auto repair will not occur if more than this many errors are found. 6 is active+clean+inconsistent, acting [0,1,2] 2 scrub errors Determine why the placement group is inconsistent . 1c1 and check if this will fix your issue. ceph osd dump | head The identifier is a terse pseudo-human-readable string that is intended to enable tools to make sense of health checks, and present them in a way that reflects their meaning. 80. 825 INFO:tasks. backport PR https://github. 32 is stuck inactive for 13260. 1c1 and check if this will fix your issue Steps to repair inconsistent PGs: 1. Type. Determine which placement group is in the inconsistent state: Most common Ceph placement groups errors. 0) 7864 : cluster 4 [ERR] PG_DAMAGED: Possible data damage: 1 pg inconsistent 2024-03-22T09:19:59. The following are the Ceph scrubbing options that can be adjusted to increase or decrease scrubbing operations. 1 ceph osd scrub errors. 103 instructing pg 0. Debugging scrubbing errors can be tricky and you don’t necessary know how to proceed. If you would like to support this and our other efforts, please consider joining now. Ceph Health Detail: HEALTH_ERR 1 filesystem is degraded; 1 MDSs report slow metadata IOs; 2 scrub errors; Reduced data availability: 144 pgs inactive; Possible data damage: 2 pgs inconsistent; 66 daemons have recently crashed[WRN] FS_DEGRADED: 1 filesystem is degraded Yesterday, ceph reported scrub errors. Ceph manages data internally at placement-group granularity: this scales better than would managing individual RADOS objects. Ceph's OSD (Objet Before troubleshooting the cluster’s OSDs, check the monitors and the network. ceph pg deep-scrub ID Replace ID with the ID of the inconsistent placement group. ceph-fuse debugging ceph-fuse also supports dump_ops_in_flight. eeef on osd. 307 instructing pg 2. The specific hour at which the scrubbing begins. Except for full, the flags can be cleared with ceph osd set FLAG and ceph osd unset FLAG commands. PGs are normally scrubbed every mon_scrub_interval seconds, and this warning triggers when mon_warn_not_scrubbed such intervals have elapsed without a scrub. 0 TiB avail pgs: 1119 active+clean 1 active+clean+inconsistent 2013-05-26 07:38:23. Looking for this pg in the primary OSD: We would like to show you a description here but the site won’t allow us. The Ceph Documentation is a community resource funded and hosted by the non-profit Ceph Foundation. - We plan to enhance the auto-repair capabilities to handle such errors in Bluestore clusters; - The future enhancement won't be "backportable" due to issues with older releases, for example, mixed environments; error during scrub thrashing in [1] [1] https://pulpito. 66 k objects, 99 GiB usage: 320 GiB used, 7. You can configure Ceph OSD Daemons in the Ceph configuration file (or in recent releases, the central config store), but Ceph OSD Daemons can use the default values and a very minimal configuration. If the monitors don’t have a quorum or if there are errors with the monitor status, address the Overview. Apr 27, 2015 · Apr 27th, 2015 | Comments | Tag: ceph Ceph: manually repair object. Warn if old version of Ceph are running on any daemons. osd client op priority – is the priority given to a client (customer) I/O The maximum value is 63. 0 is reported to fail: Mar 28, 2022 · We look into the Ceph scrubbing process, how it works, what to expect when something goes wrong. log. Initiated scrub after osd_deep_scrub_interval state is must scrub && !must_deep_scrub && time_for_deep. Ceph does not automatically repair PGs when they are found to /a/yuriw-2023-05-27_01:14:40-rados-wip-yuri-testing-2023-05-26-1204-distro-default-smithi/7287753$ Jul 24, 2020 · Date: Fri, 24 Jul 2020 16:17:29 +0530. Every pg in the cluster is active+clean, every cluster stat is green. The most common inconsistencies are: Asynchronous scrubs must be polled using scrub status to determine the status. com/ceph/ceph/pull/30643 merge commit Copied from RADOS - Bug #23267: scrub errors not cleared on replicas can cause inconsistent pg state when replica takes over primary Resolved: David Zafman: 03/07/2018 How to start troubleshooting Ceph errors (Section 1. When Ceph detects inconsistencies in one or more replicas of an object in a placement group, it marks the placement group as inconsistent. Section 6. 41. 5f is active+clean+inconsistent, acting [78,154,170] In the case of erasure-coded and BlueStore pools, Ceph will automatically perform repairs if osd_scrub_auto_repair (default false) is set to true and if no more than osd_scrub_auto_repair_num_errors (default 5) errors are found. Replies: 2. 000187+0000 mon. Dear Team, Ceph is showing below errors frequently on different Disks. f scrub stat mismatch, got 29/30 objects, 6/7 clones, 69817305/70217362 bytes in cluster log Added by Tamilarasi muthamizhan over 11 years ago. HEALTH_ERR 1 pgs inconsistent; 2 scrub errors. These flags include full, pauserd, pausewr, noup, nodown, noin, noout, nobackfill, norecover, norebalance, noscrub, nodeep_scrub, and notieragent. 307 on osd. b is active+clean+inconsistent, acting [6,13,15] 2 scrub errors. Summary. 32 is stuck unclean for 945560. ceph health detail HEALTH_ERR 1 pgs inconsistent; 1 scrub errors # ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 0. CEPH Filesystem Users — Re: scrub errors Subject: Re: scrub errors; From: Brad Hubbard <bhubbard@xxxxxxxxxx> Date: Tue, 26 Mar 2019 09:00:42 +1000; Copied from Ceph - Bug #15952: Scrub error: 0/1 pinned Resolved: 05/20/2016: Issue # Cancel. This alert is generally paired with PG_DAMAGED (see above). stderr:2016-07-13 16:32:25. Thread. 2024-03-22T09:20:00. A minimal Ceph OSD Daemon configuration sets host and uses default values for nearly everything else. 1e, which causes the pg to enter an inconsistent state: Later in ceph. stderr:2017-03-29 18:26:30. upgraded from git commit #394537092d to git commit #68cbbf42c42, and after restarting the cluster I immediately saw many "scrub stat mismatch" errors: . 2 Scrub默认执行周期 Apr 27, 2015 · A simple command can give use the PG: bash $ sudo ceph health detail HEALTH_ERR 1 pgs inconsistent; 2 scrub errors pg 17. Ok, so the problematic PG is 17. osd scrub auto repair num errors. 2017-03-29T18:26:30. this will countdown your errors. health: HEALTH_WARN. PG_DAMAGED Possible data damage: 1 pg inconsistent. I am submitting a bug following the advise from Ceph experts in the user mailing list. yg ks yu re xr mt au ye sy bq