Hi all,

We are seeing some oddness on a couple of our compute hosts that seems to be related to iSCSI. On a couple of our hosts I am seeing this error in the nova compute logs:

2020-10-27 18:56:14.814 31490 WARNING os_brick.initiator.connectors.iscsi [req-8613ae69-1661-49cf-8bdc-6fec875d01ba - - - - -] Couldn't find iscsi sessions because iscsiadm err: iscsiadm: could not read session targetname: 5
iscsiadm: could not find session info for session1707

That seems to also stop any instance on the compute host from being able to reboot.  Reboots seem to get accepted but the instance never completes and gets stuck in the reboot state:

2020-10-27 19:11:58.891 48612 INFO nova.compute.manager [-] [instance: c8079e85-4777-4615-9d5a-3d1151e11984] During sync_power_state the instance has a pending task (reboot_started_hard). Skip.
2020-10-27 19:11:58.891 48612 INFO nova.compute.manager [-] [instance: 31128f26-910d-411f-98e0-c95dd36f4f0f] During sync_power_state the instance has a pending task (reboot_started_hard). Skip.

Does anyone know of a way to resolve this without rebooting the entire compute host? I can't see any other issues other than the fact there is this iSCSI error which in turn seems to stop nova from processing anything for any instance.

Any advice would be much appreciated.

Regards,

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Grant Morley Cloud Engineer, Civo Ltd Unit H-K, Gateway 1000, Whittle Way Stevenage, Herts, SG1 2FP, UK

Visit us at www.civo.com

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