# Error when restore **URL:** \ **Category:** Percona Backup for MongoDB\ **Created:** [April 27, 2020, 4:57pm UTC](https://forums.percona.com/t/error-when-restore/7582 "2020-04-27T16:57:14Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 27, 2020, 4:57pm UTC](https://forums.percona.com/t/error-when-restore/7582/1 "2020-04-27T16:57:14Z")
I encounter a problem when I want restore.I get this message :2020/04/28 00:18:01 Got command restore 2020-04-21T09:57:33Z 2020/04/28 00:18:01 [ERROR] unbale to run the restore while another backup or restore process runningAny idea ?I restart all server before start the restore to be sure there is no other process running. I use this pbm version :Version:   1.1.1 Platform:  linux/amd64 GitCommit: 457bc0eaf861c8c15c997333ce1d8108a138874b GitBranch: master BuildTime: 2020-01-31\_13:17\_UTC GoVersion: go1.12.9 Thanks for help. ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 28, 2020, 5:58am UTC](https://forums.percona.com/t/error-when-restore/7582/2 "2020-04-28T05:58:40Z")
So I have update to version 1.1.3 and I have more clear log.It is really strange, this is my backup file with some error :2020-04-21T08:00:18Z  Failed with “some pbm-agents were lost during the backup” 2020-04-21T09:57:33Z 2020-04-27T09:15:23Z  Failed with “some pbm-agents were lost during the backup” But in 1.1.1 all was clear.If we see 2020-04-21T09:57:33Z we have this files :-rw-r–r-- 1 jonathan jonathan 2,3K avril 21 12:25 2020-04-21T09:57:33Z.pbm.json -rw-r–r-- 1 jonathan jonathan 123K avril 21 11:57 2020-04-21T09:57:33Z\_rs0.dump.gz -rw-r–r-- 1 jonathan jonathan  51K avril 21 12:25 2020-04-21T09:57:33Z\_rs0.oplog.gz -rw-r–r-- 1 jonathan jonathan 1,9G avril 21 12:25 2020-04-21T09:57:33Z\_srs0.dump.gz -rw-r–r-- 1 jonathan jonathan 1,8K avril 21 12:25 2020-04-21T09:57:33Z\_srs0.oplog.gz -rw-r–r-- 1 jonathan jonathan 1,9G avril 21 12:25 2020-04-21T09:57:33Z\_srs1.dump.gz -rw-r–r-- 1 jonathan jonathan 1,3K avril 21 12:25 2020-04-21T09:57:33Z\_srs1.oplog.gz So we can see itis clearly a sharded database. When I use the command :pbm restore 2020-04-21T09:57:33Z --mongodb-uri="mongodb://pbmuser:password@10.0.4.111:27019/?replicaSet=rs0"It is restore only the first shard srs0 and says the collection is not sharded :db.newtrans.stats() {         “sharded” : false,         “primary” : “srs0”, }Any clue of what happen ? ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [April 28, 2020, 10:02am UTC](https://forums.percona.com/t/error-when-restore/7582/3 "2020-04-28T10:02:32Z")
Hi @j2geu 1) Do you have running pbm-agents on all shards? 2) What does “pbm list --restore” shows? ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [April 28, 2020, 10:15am UTC](https://forums.percona.com/t/error-when-restore/7582/4 "2020-04-28T10:15:03Z")
Speaking of failed backups. “some pbm-agents were lost during the backup” - means that some pbm-agent(s) which ran backup failed to send a heartbeat. It can happen if an agent was restarted or a node experienced some network issues. Maybe agents’ logs reveal more details. ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 29, 2020, 2:33am UTC](https://forums.percona.com/t/error-when-restore/7582/5 "2020-04-29T02:33:51Z")
@AndrewPogrebnoi Thanks for your help.So I erase all and start from the beginning, I have create a new sharded collection.Make a new backup:pbm list result  2020-04-29T07:46:41Z   2020-04-29T07:54:40Z And when I restore, I have this:avril 29 09:59:14 MONGO1 pbm-agent[32399]: 2020/04/29 09:59:14 Mark restore as failed `restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations`: \ avril 29 09:59:14 MONGO1 pbm-agent[32399]: 2020/04/29 09:59:14 [ERROR] restore: restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations What does it mean ? ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 29, 2020, 3:44am UTC](https://forums.percona.com/t/error-when-restore/7582/6 "2020-04-29T03:44:25Z")
Hello @AndrewPogrebnoi and @“Akira Kurogane”,I have drop database with db.dropDatabase() and db.adminCommand({flushRouterConfig:1}).I have restart all node and restart all pbm-agent.I have create a really small sharded collection.I backup it without error.But When I want to restore it, I keep the error :avril 29 11:12:56 MONGO1 pbm-agent[1549]: 2020/04/29 11:12:56 Mark restore as failed `restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations`: \ avril 29 11:12:56 MONGO1 pbm-agent[1549]: 2020/04/29 11:12:56 [ERROR] restore: restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [April 29, 2020, 7:27am UTC](https://forums.percona.com/t/error-when-restore/7582/7 "2020-04-29T07:27:02Z")
@j2geu Are all the required roles granted for your pbmuser on the new cluster as it described in documentation [Authentication — Percona Backup for MongoDB 1.8 Documentation](https://www.percona.com/doc/percona-backup-mongodb/authentication.html#create-the-pbm-user)? ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 29, 2020, 7:44am UTC](https://forums.percona.com/t/error-when-restore/7582/8 "2020-04-29T07:44:01Z")
@AndrewPogrebnoi I have not recreate a cluster, only delete data and flush some cache.Yes user and role are ok.2020-04-29T15:09:23.952+0200 E  QUERY    [js] uncaught exception: Error: Role “pbmAnyAction@admin” already exists : 2020-04-29T15:09:26.622+0200 E  QUERY    [js] uncaught exception: Error: couldn’t add user: User “pbmuser@admin” already exists : When I restart PBM agent all seems to be ok :avril 29 15:12:55 MONGO1 systemd[1]: Stopping pbm-agent… avril 29 15:12:55 MONGO1 systemd[1]: Stopped pbm-agent. avril 29 15:12:55 MONGO1 systemd[1]: Started pbm-agent. avril 29 15:12:55 MONGO1 pbm-agent[13571]: pbm agent is listening for the commands I don’t understant the meaning of “conflicting namespace destinations” ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 30, 2020, 4:23am UTC](https://forums.percona.com/t/error-when-restore/7582/9 "2020-04-30T04:23:11Z")
Hello @AndrewPogrebnoi and @“Akira Kurogane” ,Must I stop something during the restore like it is write for version 1.0.0. or do I just need to execute the restore commande ?I will delete all and recreate a complete new architecture to be sure it is not a problem with that.Thank you. ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [April 30, 2020, 10:54am UTC](https://forums.percona.com/t/error-when-restore/7582/10 "2020-04-30T10:54:21Z")
Hi @j2geu You don’t have to stop or restart anything before the restore. But keep in mind that if you do restart nodes and/or recreate a pbm user it’s better to restart pbm-agents as well. Let us know how it went with the new architecture. Thank you! ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [April 30, 2020, 5:27pm UTC](https://forums.percona.com/t/error-when-restore/7582/11 "2020-04-30T17:27:58Z")
@AndrewPogrebnoi and @“Akira Kurogane” ,So, since I completly reinstall mongodb and pbm agent, all work well.In different mistake identify, there is ulimitsttings on somme servers. I put maximum value on all server as recommended by mongo.For the moment I only test with a really small set of data. I will test it with a biggest one.What is about the compress ption at “none” ? Is it ok to use it in production or not ?Thank you. ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [May 2, 2020, 3:58am UTC](https://forums.percona.com/t/error-when-restore/7582/12 "2020-05-02T03:58:52Z")
@AndrewPogrebnoi I encounter a out of memory problem.I have try to restore a “bigger” database (8GB) and pbm-agent failed.I have 4GB Ram Here my ulimit -a on all server jonathan@MONGO3:~$ ulimit -a core file size          (blocks, -c) 0 data seg size           (kbytes, -d) unlimited scheduling priority             (-e) 0 file size               (blocks, -f) unlimited pending signals                 (-i) 14908 max locked memory       (kbytes, -l) unlimited max memory size         (kbytes, -m) unlimited open files                      (-n) 65535 pipe size            (512 bytes, -p) 8 POSIX message queues     (bytes, -q) 819200 real-time priority              (-r) 0 stack size              (kbytes, -s) 8192 cpu time               (seconds, -t) unlimited max user processes              (-u) 65535 virtual memory          (kbytes, -v) unlimited file locks                      (-x) unlimited And here the stack trace ([complete stack available here](https://justpaste.it/37h0u)):mai 02 11:09:10 MONGO3 pbm-agent[22765]: 2020-05-02T11:09:10.914+0200        restoring bank.transaction from archive on stdin mai 02 11:11:44 MONGO3 pbm-agent[22765]: fatal error: runtime: out of memory mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime stack: mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.throw(0xe83778, 0x16) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/panic.go:617 +0x72 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.sysMap(0xc0d4000000, 0x4000000, 0x18713f8) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mem\_linux.go:170 +0xc7 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).sysAlloc(0x1858d00, 0x8ac000, 0x1858d10, 0x456) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/malloc.go:633 +0x1cd mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).grow(0x1858d00, 0x456, 0x0) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mheap.go:1222 +0x42 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).allocSpanLocked(0x1858d00, 0x456, 0x1871408, 0x0) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mheap.go:1150 +0x37f mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).alloc\_m(0x1858d00, 0x456, 0x101, 0x0) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mheap.go:977 +0xc2 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).alloc.func1() mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mheap.go:1048 +0x4c mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.(\*mheap).alloc(0x1858d00, 0x456, 0x7fdbcf000101, 0x427cb0) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/mheap.go:1047 +0x8a mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.largeAlloc(0x8ac000, 0x450100, 0xc0c2e3a000) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/malloc.go:1055 +0x99 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.mallocgc.func1() mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/malloc.go:950 +0x46 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.systemstack(0x0) mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/asm\_amd64.s:351 +0x66 mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.mstart() mai 02 11:11:44 MONGO3 pbm-agent[22765]:         /usr/local/go/src/runtime/proc.go:1153 mai 02 11:11:44 MONGO3 pbm-agent[22765]: goroutine 415 [running]: mai 02 11:11:44 MONGO3 pbm-agent[22765]: runtime.systemstack\_switch() ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [May 2, 2020, 4:51am UTC](https://forums.percona.com/t/error-when-restore/7582/13 "2020-05-02T04:51:59Z")
@AndrewPogrebnoi So I pursue the debug.I increase my swap file to 4,3GB. And the restore was ok for a 8GB database (1,5GB of swap file was use).But after the restore, pbm-agent don’t release memory, I need to restart it.That is explain why sometimes I can restore a file and just after I can’t restore the same file and have out of memory error. I will try to restoring a bigger database to see if there is a “memory leak” or if it is a fix size of memory use. ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [May 7, 2020, 9:54am UTC](https://forums.percona.com/t/error-when-restore/7582/14 "2020-05-07T09:54:56Z")
@j2geu That’s interesting. We created a ticket ([[PBM-462] Possible memory leak during the restore - Percona JIRA](https://jira.percona.com/browse/PBM-462)) and will investigate that. Thanks for the investigation and reporting it! I’ll keep you posted on the outcome. ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [June 24, 2020, 3:09am UTC](https://forums.percona.com/t/error-when-restore/7582/15 "2020-06-24T03:09:15Z")
@AndrewPogrebnoi Hello I encounter new problem on a new platform : Jun 24 10:29:03 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020/06/24 10:29:03 [INFO] Restore of ‘2020-06-24T08:21:01Z’ started Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020-06-24T10:29:07.023+0200        preparing collections to restore from Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020-06-24T10:29:07.023+0200        destination conflict: admin.pbmRUsers (src) =\> admin.pbmRUsers (dst) Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020-06-24T10:29:07.023+0200        destination conflict: admin.system.users (src) =\> admin.pbmRUsers (dst) Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020-06-24T10:29:07.023+0200        destination conflict: admin.pbmRRoles (src) =\> admin.pbmRRoles (dst) Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020-06-24T10:29:07.023+0200        destination conflict: admin.system.roles (src) =\> admin.pbmRRoles (dst) Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020/06/24 10:29:07 Mark restore as failed `restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations`: \ Jun 24 10:29:07 QPN-DS-MNG-CN04 pbm-agent[2115]: 2020/06/24 10:29:07 [ERROR] restore: restore mongo dump (successes: 0 / fails: 0): cannot restore with conflicting namespace destinations Do you have any idea where this come from ?I don’t understand, my pbmuser is name pbmuser not pbmRuser for information. ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [June 25, 2020, 6:31am UTC](https://forums.percona.com/t/error-when-restore/7582/16 "2020-06-25T06:31:02Z")
@j2geu Is the destination cluster brand new? Were there any issues before that restore? Can you try to drop admin.pbmRRoles and admin.pbmRUsers tables manually and re-run restore? ---
**Author:** ![j2geu](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@j2geu](https://forums.percona.com/u/j2geu)\ **Post date:** [June 25, 2020, 6:34am UTC](https://forums.percona.com/t/error-when-restore/7582/17 "2020-06-25T06:34:06Z")
@AndrewPogrebnoi The cluster is brand new but I have found there is a process who recreate collection with this index. So here is my error. I pursue the test because I had some other error with 1TB of data before. Thanks for your help and sorry to disturb you for nothing. ---
**Author:** ![Andrew\_Pogrebnoi](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andrew_pogrebnoi/32/77_2.png) [@Andrew\_Pogrebnoi](https://forums.percona.com/u/Andrew_Pogrebnoi)\ **Post date:** [June 25, 2020, 9:26am UTC](https://forums.percona.com/t/error-when-restore/7582/18 "2020-06-25T09:26:34Z")
@j2geu  no worries, glad that you’ve found the issue. Cheers!