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Article Number: 000210789

Powerflex: SDS process panics intermittently when running vtree migration in Fine Granularity Storage Pool

Summary: SDS process may panic intermittently when FG vtree migration is performed

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Article Content

Symptoms

The SDS'es panic with the below stack trace as below on function spefStorageRegion_FillCompressedMessage

2023/02/13 08:23:46.078303 Panic in file /data/build/workspace/ScaleIO-Common-Job/src/tgt/storage/spef_impl/spef_storage_region.c, line 4943, function spefStorageRegion_FillCompressedMessage, PID 17933.Panic Expression !(((void *)0) == pBuff) PANIC_ID_tgt_1594023094280.
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(mosDbg_PanicPrepare+0x13a) [0x93ab8a]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(spefStorageRegion_FillCompressedMessage+0x2a5) [0x80f625]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(raidComb_WriteCombRemote+0x168c) [0x75232c]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107() [0x753098]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107() [0x5dd1f6]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(raidComb_Write+0xf0) [0x5de710]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(iohComb_WritePrimary+0x405) [0x5f5705]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(ioh_Write+0x521) [0x5f6411]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(ioh_NewRequest+0x3085) [0x5fc4a5]
/opt/emc/scaleio/sds/bin/sds-3.6.300.107(contNet_RecvIORequest+0x2c4) [0x601534]

Cause

When migrating a compressed volume, it is possible that the target SDS will receive migration data that has been completely trimmed or written with zeros. If this occurs, the SDS may not process the data correctly, which can cause the SDS to restart or panic. This is an issue that can arise during volume migration

Resolution

Upgrade Powerflex to v3.6.1 or v4.x and above

Article Properties

Affected Product

PowerFlex Software

Product

VxFlex Product Family

Last Published Date

13 Jul 2023

Version

5

Article Type

Solution

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