Ceph pg stuck incomplete. Only 1 (or very few PGs) are in this state.
Ceph pg stuck incomplete. PG stuck in "remapped" or "undersized" or "degraded" and no recovery or backfill activity (See the Diagnostic section for ceph status example output). To return the PG to an active+clean state, you must first determine which of the PGs has become inconsistent and then run the pg repair command on it. I assume you already tried reducing the min_size to 4 as suggested When checking a cluster’s status (e. 22 is stuck inactive for 95447. and then the following problem occurred: 7 out of 32 osds went to down and out. The optimum state for PGs in the PG map is an active + clean state. Now my PG is down and incomplete, and throwing this When you check the storage cluster’s status with the ceph -s or ceph -w commands, Ceph reports on the status of the placement groups (PGs). To retrieve a list of PGs, run the following command: For stuck stale placement groups, it is normally a matter of getting the right ceph-osd daemons running again. trying to set them in and Troubleshooting PGs Placement Groups Never Get Clean Placement Groups (PGs) that remain in the active status, the active+remapped status or the active+degraded status and never achieve an active+clean status might indicate a problem with the configuration of the Ceph cluster. The mon_pg_stuck_threshold option in the Ceph configuration file determines the number of seconds after which placement groups are considered inactive, unclean, or stale. Only 1 (or very few PGs) are in this state. For example, ceph health might report: Gone to each node and nuked all the shards out of the OSD by stopping the OSD, then using ceph-objectstore-tool to remove the shards for that PG, then starting the OSD back up. x cephuser@adm > ceph pg dump_stuck stale cephuser@adm > ceph pg dump_stuck inactive cephuser@adm > ceph pg dump_stuck unclean For stuck stale placement groups, ensure you have the right ceph-osd daemons running again. What you need to fix is the PG showing incomplete. For stuck inactive placement groups, it is can be a peering problem. Aug 24, 2017 · PG_AVAILABILITY Reduced data availability: 27 pgs inactive, 23 pgs incomplete pg 12. These PGs are refere The general consensus from those threads is that as long as down_osds_we_would_probe is pointing to any OSD that can't be reached, those PGs will remain stuck incomplete and can't be cured by force_create_pg or even "ceph osd lost". 1 query ==> state ; "creating+incomplete" "up" and "acting" contain only the osd '1' as first element, and 'null' (2147483647) at all other Degraded means fewer than the desired replicas are up-to-date or exist while remapped means that all replicas of data exist but the cluster wants them placed elsewhere. Concerning PG states are inactive, incomplete, and unknown. activating The placement group is peered but not yet active. This guide covers manual export and import procedures for effective data recovery. I’d greatly appreciate Ceph status returns "[WRN] PG_AVAILABILITY: Reduced data availability: xx pgs inactive, xx pgs peering" Example: # ceph -s cluster: id: 5b3c2fd{Cluster ID Obfuscated}16bfb00 health: HEALTH_WARN 1 MDSs report slow metadata IOs 1 MDSs report slow requests 1 MDSs behind on trimming Reduced data availability: 6 pgs inactive, 6 pgs peering 30 secs [WRN] MDS_TRIM: 1 MDSs behind on trimming mds. For example, ceph health might report: Jun 7, 2018 · What I tried : ceph osd pool create newpool 128 128 erasure myprofile rados --pool newpool put anobject afile ==> This blocks ceph pg ls-by-pool newpool incomplete ==> all my pgs are listed ceph pg 15. This has worked in the past however something is stuck now. We have all PGs active now except for 80 PGs that are stuck in the "incomplete" state. g. For stuck inactive placement groups, it is usually a peering problem (see Placement Group Down - Peering Failure). In such a situation, review the settings in the Pool, PG and CRUSH Config Reference and make appropriate adjustments cephuser@adm > ceph pg dump_stuck stale cephuser@adm > ceph pg dump_stuck inactive cephuser@adm > ceph pg dump_stuck unclean For stuck stale placement groups, ensure you have the right ceph-osd daemons running again. In such a situation, review the settings in the Pool, PG and CRUSH Config Reference and make appropriate adjustments Jun 21, 2022 · proxmox 7. I have a gory story to tell. A large number of PGs remain stuck in active+cleaned+remapped, and I’m seeing a high percentage of misplaced objects that just won’t seem to move. , running ceph -w or ceph -s), Ceph will report on the status of the placement groups. The system may also be behind is scrubbing as newer versions of Ceph will not schedule scrubbing PGs unless those PGs are active+clean. For stuck unclean placement groups, there is usually something preventing recovery from completing, like unfound objects (see Unfound Objects); Placement Group Down - Peering Failure ¶ In certain cases, the ceph-osd Peering process can run into problems, preventing a PG from becoming active and usable. When they are not, it might indicate that Ceph is migrating the PG (in other words, that the PG has been remapped), that an OSD is recovering, or that there is a problem with the cluster (in such scenarios, Ceph usually shows a “HEALTH WARN” state with a “stuck stale” message). ocs Anyone else actually used Rook with Ceph that can tell me how to use the ceph-objectstore-tool to accept data loss for these 10 incomplete PG's? On one of the OSD's that won't start now, I see this: When they are not, it might indicate that Ceph is migrating the PG (in other words, that the PG has been remapped), that an OSD is recovering, or that there is a problem with the cluster (in such scenarios, Ceph usually shows a “HEALTH WARN” state with a “stuck stale” message). 179554, current state unknown, last acting [] Troubleshooting PGs Placement Groups Never Get Clean Placement Groups (PGs) that remain in the active status, the active+remapped status or the active+degraded status and never achieve an active+clean status might indicate a problem with the configuration of the Ceph cluster. From the io: section of ceph status, there is no recovery activity. Placement Groups states Copy link When you check the storage cluster’s status with the ceph -s or ceph -w commands, Ceph reports on the status of the placement groups (PGs). You are just seeing these requests as stuck because it's the only thing trying to write to the underlying pool. Commands for Diagnosing PG Problems Troubleshooting PGs Placement Groups Never Get Clean Placement Groups (PGs) that remain in the active status, the active+remapped status or the active+degraded status and never achieve an active+clean status might indicate a problem with the configuration of the Ceph cluster. Oct 29, 2018 · recovering Ceph from “Reduced data availability: 3 pgs inactive, 3 pgs incomplete” When your pool stuck and you don’t know what to do. See Section 9. A placement group has one or more states. This page contains commands for diagnosing PGs and the command for repairing PGs that have become inconsistent. Issued a ceph osd force-create-pg to recreate the PG. In addition, you can list placement groups that are stuck in a state that is not optimal. Paul Emmerich 7 years ago The cache tiering has nothing to do with the PG of the underlying pool being incomplete. In such a situation, review the settings in the Pool, PG and CRUSH Config Reference and make appropriate adjustments Learn how to recover inactive Placement Groups (PGs) in Ceph clusters using the ceph-objectstore-tool. We have been working on restoring our Ceph cluster after losing a large number of OSDs. A PG has one or more states. 2. active Ceph will process PG_INCOMPLETE - PGs are incomplete, often due to missing OSDs or data corruption. Use this information to get to know the different placement group states. The table provides links to corresponding sections that explain the errors and point to specific procedures to fix the problems. To retrieve a list of PGs, run the following command: Mar 21, 2021 · Hi, i have a 3 Node cluster with ceph. Repairing PG Inconsistencies ¶ Sometimes a Placement Group (PG) might become inconsistent. In both cases the cluster will repair or move the data in question. root@pve01:~# ceph health detail HEALTH_WARN mons are allowing insecure global_id reclaim; Reduced data availability: 88 pgs inactive, 88 pgs peering; 29 slow ops. 1-8 yesterday i executed a large delete operation on the ceph-fs pool (around 2 TB of data) the operation ended withing few seconds successful (without any noticeable errors). 3, “Listing placement groups stuck in stale Mar 16, 2024 · I’m running a Ceph cluster in a Proxmox environment (3 nodes) and am having issues with my cluster not finishing its rebuild. After updating all node one by one, i can see that ceph is not able to peer all pgs. 3. The following table lists the most common errors messages that are returned by the ceph health detail command. Stuck inactive incomplete PGs in Ceph If any PG is stuck due to OSD or node failure and becomes unhealthy, resulting in the cluster becoming inaccessible due to a blocked request for greater than 32 secs, try the following: Set noout to prevent data rebalancing: #ceph osd set noout Query the PG to see which are the probing OSDs: # ceph pg xx. Jun 14, 2023 · On powerup ceph started rebuilding correctly and in 15 mins the PG was in good shape again. creating Ceph is still creating the placement group. The osd flag won't affect OSDs that don't have that recovery blocked-by set but best to toggle back to false after the cluster has recreated the PG. The optimum state for placement groups in the placement group map is active + clean. 5wbz jl8k8 tpkwzs fgvfbja vig pu7at u8q ybe gbmz ifjj