PowerFlex: Unable To Create Volumes In OpenStack Environment

Summary: When trying to create and map a volume to a Compute Node in OpenStack the operation is taking much more time (comparing to the other nodes) and the client is logging errors against the newly created device. ...

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Symptoms

This issue is specific to OpenStack and performing configuration over REST API to the Gateway. 

 

SDC might log following errors:

2020-04-16T10:25:27.607190+00:00 sdc1.domain.tld kernel: [13805394.079123] ScaleIO R2_5 mapVolIO_ReportIOErrorIfNeeded:361 :[30984981704] IO-ERROR comb: 6e780010000. offsetInComb 3325952. SizeInLB 8. SDS_ID 13c2df1900000002. Comb Gen 10. Head Gen 8edb.
2020-04-16T10:25:27.607203+00:00 sdc1.domain.tld kernel: [13805394.082733] ScaleIO R2_5 mapVolIO_ReportIOErrorIfNeeded:374 :Vol ID 0xce57737a0000002d. Last fault Status SUCCESS(65).Last error Status TIMEOUT(68) Reason (ERROR) Retry count (4) chan (106)
2020-04-16T10:25:27.607204+00:00 sdc1.domain.tld kernel: [13805394.086555] blk_update_request: I/O error, dev scinia, sector 0

 

I/O traffic to/from a VxFlex volume might be very slow (a few MB/s), even if network connectivity is fine

 

 

Impact

Unable to use a volume on a Compute Node.

Cause

SDC was misconfigured - the MDM IP configuration contained addresses which were not MDM's, what affected entire communication between the SDC and the rest of the cluster.

Resolution

Problem was fixed by correcting SDC configuration to point only to the correct MDM IP addresses.

Affected Products

PowerFlex Software, VxFlex Product Family, VxFlex Ready Node, Ready Node Series
Article Properties
Article Number: 000203060
Article Type: Solution
Last Modified: 15 أيار 2026
Version:  5
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