I’ve seen the below recently in our logs. The errors doesn’t stop anything from happening but it’s still concerning:
Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2695168: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2703360: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2711552: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2719744: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2727936: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2736128: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2744320: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400) Apr 28 02:00:19 hv11 QEMU[3161]: kvm: iSCSI GET_LBA_STATUS failed at lba 2752512: SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:INVALID_FIELD_IN_CDB(0x2400)
The message only appears when there is heavy load on the NAS. Please comment if you have any advice.
Mentioned here:
and here:
https://forum.proxmox.com/threads/zfs-over-iscsi-w-truenas-scale-difficult-troubleshooting.140168/