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<p class="MsoNormal">The error message is stating that \u2018-P\u2019 is not valid option to the conf_param command. You may be thinking of lctl set_param -P \u2026<br>
<br>
Did you follow the documented procedure for removing an OST from the filesystem when you \u201cadjust[ed] the configuration\u201d?<br>
<br>
<a href="https://build.whamcloud.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#lustremaint.remove_ost">https://build.whamcloud.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#lustremaint.remove_ost</a><br>
<br>
Chris Horn<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">lustre-discuss <lustre-discuss-bounces@lists.lustre.org> on behalf of Alejandro Sierra via lustre-discuss <lustre-discuss@lists.lustre.org><br>
<b>Date: </b>Wednesday, August 9, 2023 at 11:55 AM<br>
<b>To: </b>Jeff Johnson <jeff.johnson@aeoncomputing.com><br>
<b>Cc: </b>lustre-discuss <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>Re: [lustre-discuss] How to eliminate zombie OSTs<o:p></o:p></span></p>
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<p class="MsoNormal">Yes, it is.<br>
<br>
El mié, 9 ago 2023 a la(s) 10:49, Jeff Johnson<br>
(jeff.johnson@aeoncomputing.com) escribió:<br>
><br>
> Alejandro,<br>
><br>
> Is your MGS located on the same node as your primary MDT? (combined MGS/MDT node)<br>
><br>
> --Jeff<br>
><br>
> On Wed, Aug 9, 2023 at 9:46\u202fAM Alejandro Sierra via lustre-discuss <lustre-discuss@lists.lustre.org> wrote:<br>
>><br>
>> Hello,<br>
>><br>
>> In 2018 we implemented a lustre system 2.10.5 with 20 OSTs in two OSS<br>
>> with 4 jboxes, each box with 24 disks of 12 TB each, for a total of<br>
>> nearly 1 PB. In all that time we had power failures and failed raid<br>
>> controller cards, all of which made us adjust the configuration. After<br>
>> the last failure, the system keeps sending error messages about OSTs<br>
>> that are no more in the system. In the MDS I do<br>
>><br>
>> # lctl dl<br>
>><br>
>> and I get the 20 currently active OSTs<br>
>><br>
>> oss01.lanot.unam.mx - OST00 /dev/disk/by-label/lustre-OST0000<br>
>> oss01.lanot.unam.mx - OST01 /dev/disk/by-label/lustre-OST0001<br>
>> oss01.lanot.unam.mx - OST02 /dev/disk/by-label/lustre-OST0002<br>
>> oss01.lanot.unam.mx - OST03 /dev/disk/by-label/lustre-OST0003<br>
>> oss01.lanot.unam.mx - OST04 /dev/disk/by-label/lustre-OST0004<br>
>> oss01.lanot.unam.mx - OST05 /dev/disk/by-label/lustre-OST0005<br>
>> oss01.lanot.unam.mx - OST06 /dev/disk/by-label/lustre-OST0006<br>
>> oss01.lanot.unam.mx - OST07 /dev/disk/by-label/lustre-OST0007<br>
>> oss01.lanot.unam.mx - OST08 /dev/disk/by-label/lustre-OST0008<br>
>> oss01.lanot.unam.mx - OST09 /dev/disk/by-label/lustre-OST0009<br>
>> oss02.lanot.unam.mx - OST15 /dev/disk/by-label/lustre-OST000f<br>
>> oss02.lanot.unam.mx - OST16 /dev/disk/by-label/lustre-OST0010<br>
>> oss02.lanot.unam.mx - OST17 /dev/disk/by-label/lustre-OST0011<br>
>> oss02.lanot.unam.mx - OST18 /dev/disk/by-label/lustre-OST0012<br>
>> oss02.lanot.unam.mx - OST19 /dev/disk/by-label/lustre-OST0013<br>
>> oss02.lanot.unam.mx - OST25 /dev/disk/by-label/lustre-OST0019<br>
>> oss02.lanot.unam.mx - OST26 /dev/disk/by-label/lustre-OST001a<br>
>> oss02.lanot.unam.mx - OST27 /dev/disk/by-label/lustre-OST001b<br>
>> oss02.lanot.unam.mx - OST28 /dev/disk/by-label/lustre-OST001c<br>
>> oss02.lanot.unam.mx - OST29 /dev/disk/by-label/lustre-OST001d<br>
>><br>
>> but I also get 5 that are not currently active, in fact doesn't exist<br>
>><br>
>> 28 IN osp lustre-OST0014-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 4<br>
>> 29 UP osp lustre-OST0015-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 4<br>
>> 30 UP osp lustre-OST0016-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 4<br>
>> 31 UP osp lustre-OST0017-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 4<br>
>> 32 UP osp lustre-OST0018-osc-MDT0000 lustre-MDT0000-mdtlov_UUID 4<br>
>><br>
>> When I try to eliminate them with<br>
>><br>
>> lctl conf_param -P osp.lustre-OST0015-osc-MDT0000.active=0<br>
>><br>
>> I get the error<br>
>><br>
>> conf_param: invalid option -- 'P'<br>
>> set a permanent config parameter.<br>
>> This command must be run on the MGS node<br>
>> usage: conf_param [-d] <target.keyword=val><br>
>> -d Remove the permanent setting.<br>
>><br>
>> If I do<br>
>><br>
>> lctl --device 28 deactivate<br>
>><br>
>> I don't get an error, but nothing changes<br>
>><br>
>> What can I do?<br>
>><br>
>> Thank you in advance for any help.<br>
>><br>
>> --<br>
>> Alejandro Aguilar Sierra<br>
>> LANOT, ICAyCC, UNAM<br>
>> _______________________________________________<br>
>> lustre-discuss mailing list<br>
>> lustre-discuss@lists.lustre.org<br>
>> <a href="http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org">http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org</a>
<br>
><br>
><br>
><br>
> --<br>
> ------------------------------<br>
> Jeff Johnson<br>
> Co-Founder<br>
> Aeon Computing<br>
><br>
> jeff.johnson@aeoncomputing.com<br>
> <a href="http://www.aeoncomputing.com">http://www.aeoncomputing.com</a>
<br>
> t: 858-412-3810 x1001 f: 858-412-3845<br>
> m: 619-204-9061<br>
><br>
> 4170 Morena Boulevard, Suite C - San Diego, CA 92117<br>
><br>
> High-Performance Computing / Lustre Filesystems / Scale-out Storage<br>
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