https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-14888 Lustre <p>We are finding an issue that is frequently disconnecting OST from the client</p> <p>We currently have OSS1-4 and MDS1-2 which works as Lustre server , and there is the version of 2.12.3 provided by HPE</p> <p>Our client are using lustre client of 2.12.2</p> <hr /> <p>On OSS1, we noticed many disconnections and reconnections of Lustre clients from various OSTs as shown below.</p> <p><span class="image-wrap" style=""><img src="https://mail.escl.com.hk/owa/service.svc/s/GetFileAttachment?id=AAMkAGRjNDBjYTNiLTQ5ZTMtNDUzMi1hMjdhLTNlYjYyNDAxOTBkOQBGAAAAAABwRbFuLU4EQbGU%2F7qhZ3%2FyBwAyf5V%2Bs4llR65cwAnqZhGPAAAAAAEMAAAyf5V%2Bs4llR65cwAnqZhGPAACPrYjmAAABEgAQAABPGVaKajdOpyeS%2BVWcBFM%3D&amp;X-OWA-CANARY=njoW7VbXh06XtqA8zk-UDO6Lx0cXUdkI3LLSDGmP8vIqmw-3NskF2BNhGIa5wLplHRV8EFxnZT4." height="570" width="945" style="border: 0px solid black" /></span></p> <p>In particular, bulk IO read error was reported for the client at 192.168.3.182 (NFS2).</p> <p> </p> <p><span class="image-wrap" style=""><img src="https://mail.escl.com.hk/owa/service.svc/s/GetFileAttachment?id=AAMkAGRjNDBjYTNiLTQ5ZTMtNDUzMi1hMjdhLTNlYjYyNDAxOTBkOQBGAAAAAABwRbFuLU4EQbGU%2F7qhZ3%2FyBwAyf5V%2Bs4llR65cwAnqZhGPAAAAAAEMAAAyf5V%2Bs4llR65cwAnqZhGPAACPrYjmAAABEgAQALdph2DCwaJAhp%2Bg3F%2BH5Fk%3D&amp;X-OWA-CANARY=njoW7VbXh06XtqA8zk-UDO6Lx0cXUdkI3LLSDGmP8vIqmw-3NskF2BNhGIa5wLplHRV8EFxnZT4." height="525" width="1590" style="border: 0px solid black" /></span></p> <p> The NFS2 even got under very high loading on 15 Jun morning, and we rebooted it.</p> <p>Since then it could no longer mount any Lustre file systems with error below in NFS2’s dmesg</p> <p> </p> <p><span class="image-wrap" style=""><img src="https://mail.escl.com.hk/owa/service.svc/s/GetFileAttachment?id=AAMkAGRjNDBjYTNiLTQ5ZTMtNDUzMi1hMjdhLTNlYjYyNDAxOTBkOQBGAAAAAABwRbFuLU4EQbGU%2F7qhZ3%2FyBwAyf5V%2Bs4llR65cwAnqZhGPAAAAAAEMAAAyf5V%2Bs4llR65cwAnqZhGPAACPrYjmAAABEgAQAHD8S8Du9OxBpRzoHvpx154%3D&amp;X-OWA-CANARY=njoW7VbXh06XtqA8zk-UDO6Lx0cXUdkI3LLSDGmP8vIqmw-3NskF2BNhGIa5wLplHRV8EFxnZT4." height="531" width="1387" style="border: 0px solid black" /></span></p> <p> </p> <p>Upon investigation, we obtained the MDS1-2 and OSS1-2 sosreport and one of the compute node that are reporting OST disconnection, which are included in the link below</p> <p><a href="https://drive.google.com/open?id=1_tR7DiXCjzXWEd5ctPjPA5NFn_FweFvq" class="external-link" target="_blank" rel="nofollow noopener">https://drive.google.com/open?id=1_tR7DiXCjzXWEd5ctPjPA5NFn_FweFvq</a></p> <p> </p> <p>-------------</p> <p>We are suspecting we faced the bug of the below , <a href="https://jira.whamcloud.com/browse/LU-13719" title="lov tgt 36 not cleaned! deathrow=0, lovrc=1" class="issue-link" data-issue-key="LU-13719"><del>LU-13719</del></a>, and we want to make sure that is true.</p> <p><a href="https://jira.whamcloud.com/browse/LU-13719" class="external-link" rel="nofollow">https://jira.whamcloud.com/browse/LU-13719</a></p> Client : 2.12.2 <br/> Server : 2.12.3 , from HPE lustre LU-14888

We are uncertain that we may hit the bug

Question/Request Major Open Unresolved Peter Jones Hong Kong University Tue, 27 Jul 2021 16:03:09 +0000 Thu, 29 Jul 2021 14:49:22 +0000 Lustre 2.12.3 0 2 <p>To be clear - do you mean that this is for the HPE Clusterstor distribution or just the unpatched 2.12.3 that HPE passed on to you? </p> <p>Scalable_Storage_with_Lustre_2.12.3_for_Gen9_and_Gen10_systems_P9L65-10015.</p> <p>I am not familiar with that at all so cannot offer authoritative advice but, generally speaking, getting a more current version from HPE could be advantageous.</p> Development Rank 1|i020an: Rank (Obsolete) 9223372036854775807