<![CDATA[XCP-NG Host stuck in read-only mode]]>Hello all,
Recently experienced an issue of host upgraded from XenServer 6.5 to XCP-ng going into read-only mode. Once in this state, VMs can't be migrated to other hosts nor can VMs be started on the host. When restarted the issue is resolved for a short time but then re-occurs.
XCP-Readonly.png
Did a fsck check and repair but this did not resolve the issue. Posts on similar issue pointed to a boot disk failure and so we replaced the disk and re-installed XCP-ng Ver 8.0 but once added back to the pool the issue re-occurred. Trying to start a VM on the host shows the error below:
XCP-tapdiskerror.png
Does anyone have any experience with this and how to resolve.

]]>https://xcp-ng.org/forum/topic/3602/xcp-ng-host-stuck-in-read-only-modeRSS for NodeMon, 15 Jun 2026 17:56:33 GMTThu, 24 Sep 2020 09:57:50 GMT60<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Tue, 11 Apr 2023 10:06:16 GMT]]>@olivierlambert Those were the only messages on the log, nothing else captured on any other log file like the crit.log file or dmesg

]]>https://xcp-ng.org/forum/post/60982https://xcp-ng.org/forum/post/60982Tue, 11 Apr 2023 10:06:16 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Tue, 11 Apr 2023 10:00:20 GMT]]>The screenshot error posted is just a harmless warning

]]>https://xcp-ng.org/forum/post/60981https://xcp-ng.org/forum/post/60981Tue, 11 Apr 2023 10:00:20 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Tue, 11 Apr 2023 09:52:26 GMT]]>@dmjorge This was never resolved. Replaced RAM and SSD, disabled SAS controller and same issue. Tried installing XCP on a different server but the same model and the issue re-occured.
xcp-xapi-errors.png
Installed Proxmox and it has been running without any issue. I believe there is a compatibility issue of XCP-ng and Supermicro SYS-6028TP-HC0R

]]>https://xcp-ng.org/forum/post/60979https://xcp-ng.org/forum/post/60979Tue, 11 Apr 2023 09:52:26 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Tue, 05 Jul 2022 19:59:32 GMT]]>@Denson Was this ever resolved?
In Xen Orchestra go to Settings/Servers and you will see a "Read Only" switch that might address the problem.
-Jorge

]]>https://xcp-ng.org/forum/post/50873https://xcp-ng.org/forum/post/50873Tue, 05 Jul 2022 19:59:32 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Thu, 08 Oct 2020 02:48:21 GMT]]>@Denson so if you don't add this host back to the pool it doesn't go read-only? May be it has something to do with shared storage, anything in /var/log/SMlog? Also check

df -h
]]>https://xcp-ng.org/forum/post/32150https://xcp-ng.org/forum/post/32150Thu, 08 Oct 2020 02:48:21 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Wed, 07 Oct 2020 08:29:26 GMT]]>Issue still persisted after rebooting and running fsck. Host went into read-only mode not long after it came up.

]]>https://xcp-ng.org/forum/post/32125https://xcp-ng.org/forum/post/32125Wed, 07 Oct 2020 08:29:26 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Fri, 25 Sep 2020 09:08:07 GMT]]>XCP-dmesg.png
I will restart and use a systemrescuecd to run fsck

]]>https://xcp-ng.org/forum/post/31663https://xcp-ng.org/forum/post/31663Fri, 25 Sep 2020 09:08:07 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Fri, 25 Sep 2020 08:39:47 GMT]]>@Denson may be corrupt file system? you can probably try fsck on your next reboot

touch /forcefsck
]]>https://xcp-ng.org/forum/post/31661https://xcp-ng.org/forum/post/31661Fri, 25 Sep 2020 08:39:47 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Thu, 24 Sep 2020 17:46:44 GMT]]>@Denson check # dmesg

]]>https://xcp-ng.org/forum/post/31626https://xcp-ng.org/forum/post/31626Thu, 24 Sep 2020 17:46:44 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Thu, 24 Sep 2020 17:19:38 GMT]]>It's a recently installed host.Root is only at 10% utilization. Does XCP-ng have any compatibility issues with Supermicro servers?

]]>https://xcp-ng.org/forum/post/31621https://xcp-ng.org/forum/post/31621Thu, 24 Sep 2020 17:19:38 GMT<![CDATA[Reply to XCP-NG Host stuck in read-only mode on Thu, 24 Sep 2020 11:47:08 GMT]]>Disk full?

]]>https://xcp-ng.org/forum/post/31592https://xcp-ng.org/forum/post/31592Thu, 24 Sep 2020 11:47:08 GMT