RecoverPoint: Replication process restarts

Summary: Replication process restarts

Produse afectate

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Symptoms

Replication process restarts
CLI logs will show the following event
            Time: <Day> <Date> <Customer Time>
            Topic: RPA
            Scope: NORMAL
            Level: ERROR & CLEAR
            Event ID: 10207
            Cluster: <Cluster Name>
            Global links: None
            RPAs: <RPA ID>
            Summary: Internal replication process has been restarted
            Service Request info: N/A

From storage logs:
Oct 21 05:05:57 localhost kernel: [14472039.329610] #0 - sll_map_pages: unable to map user pages: r=226 cur_num_pages=227 data_length=926208 rw=2
Oct 21 05:05:57 localhost kernel: [14472039.329616] #0 - sll_dispatch_commands: sll_map_pages failed
Oct 21 05:05:57 localhost kernel: [14472039.329620] #0 - sll_ioctl_do_generate_io: sll_dispatch_cmd failed in map_pages (res_dispatch = 2)

Cause

Transient situation around mapping user pages to kernel memory where processes access invalid memory, which leads to a segmentation fault.

Resolution

Workaround:

Increase the value of t_scsiInitiatorMaxMapPagesFailures from 2 to 5 and reboot the RPAs.

Resolution:

Dell EMC engineering is currently investigating this issue. A permanent fix is still in progress. Contact the Dell EMC Customer Support Center or your service representative for assistance and reference this solution ID.