Skip to main content
NetApp Knowledge Base

E-Series reports unreadable sectors detected on multiple drives due to a faulty controller

  1. Last updated
  2. Save as PDF
Views:
2,351
Visibility:
Public
Votes:
1
Category:
e-series-systems
Specialty:
esg
Last Updated:

Applies to

  • E-Series
  • SANtricity OS

Issue

  • VDD errors (VDD logged an error, VDD repair started, VDD repair completed) are seen on multiple drives (from parsed MEL):

A:11/30/20 5:51:28 AM (05:51:28) 102043 201f VDD repair completed - Shelf 1, Bay A - SSID: 3, Devnum: 0x010017 LBA: 0x436886a0
----> Flags: 0x40202085 = READ: Read Operation, ERROR: IO Compl. w. Err, PARITY: Parity data, NOLOCK: Prevent lock during read err., PI: Error coding in effect, NOCACHE: CDB DPO cache lowest retention - Error: 0x844 = UA_MISCORRECTED_DATA_ERROR
A:11/30/20 5:51:28 AM (05:51:28) 102042 201e VDD repair started - Shelf 1, Bay A - SSID: 3, Devnum: 0x01000f
A:11/30/20 5:51:28 AM (05:51:28) 102041 201e VDD repair started - Shelf 1, Bay A - SSID: 3, Devnum: 0x010017

B:11/30/20 4:36:26 AM (04:36:26) 101853 2014 VDD logged an error - Shelf 1, Bay B - SSID: 0, Devnum: 0x01010b LBA: 0x0e19b600, Blocks: 0xb8 - Recovered
----> Flags: 0x200801 = READ: Read Operation, CURRENT: Read current data from cache, PI: Error coding in effect
----> Recovery: 0x2 = Reconstruction used, ASC: 0x1f = IOP_FAST_TIMEOUT_ERROR, Detection: 0xf80b0181
B:11/30/20 4:36:26 AM (04:36:26) 101852 2014 VDD logged an error - Shelf 1, Bay B - SSID: 3, Devnum: 0x010113 LBA: 0x30431628, Blocks: 0x8 - Recovered
----> Flags: 0x200801 = READ: Read Operation, CURRENT: Read current data from cache, PI: Error coding in effect
----> Recovery: 0x2 = Reconstruction used, ASC: 0x1f = IOP_FAST_TIMEOUT_ERROR, Detection: 0xf80b0181

  • Unreadable sector(s) detected errors occur, which may accompany with data assurance mismatch detected:

A:11/30/20 5:39:26 AM (05:39:26) 102031 6700 Unreadable sector(s) detected data loss occurred - Volume volume04 - LBA: 0x10da21aaa <--CRITICAL
----> Physical Drive in Tray 1 Slot 23, LBA: 0x28f443aa
A:11/30/20 5:39:26 AM (05:39:26) 102030 2061 Data assurance mismatch detected - probable cause is cached data - Volume volume04 - ioType: DST_OUT, hwPIStatus: GUARD_ERROR, swPIStatus: GUARD_ERROR, Host ID: 65535, LBA: 0x10da2bb00
----> Expected Guard:0x0000, AppTag:0x0000, RefTag:0x00000000
----> Found    Guard:0x0000, AppTag:0x0000, RefTag:0x00000000
A:11/30/20 5:39:26 AM (05:39:26) 102029 2070 Data assurance mismatch detected -- cached data error on both controllers - Volume volume04
A:11/30/20 5:39:26 AM (05:39:26) 102028 2061 Data assurance mismatch detected - probable cause is cached data - Volume volume04 - ioType: DST_OUT, hwPIStatus: GUARD_ERROR, swPIStatus: GUARD_ERROR, Host ID: 65535, LBA: 0x10da21a00
----> Expected Guard:0x0000, AppTag:0x0000, RefTag:0x00000000
----> Found    Guard:0x0000, AppTag:0x0000, RefTag:0x00000000

  • Those unreadable sectors are spread across multiple drives:

Volume       LUN  Accessible By            Date/Time             Volume LBA   Drive Location   Drive LBA   Failure Type  
volume01     1    Host Cluster cluster1    11/30/20 12:04:40 PM  0x3c08c9ee   Shelf 1    Bay 5   0x2f119ee   DA Error
volume03     3    Host Cluster cluster1    11/30/20 6:22:09 PM   0x10241c1ed  Shelf 1    Bay 4   0x261838ed  DA Error
volume04     4    Host Cluster cluster1    11/30/20 5:39:28 AM   0x10da21aaa  Shelf 1    Bay 23  0x28f443aa  DA Error
volume04     4    Host Cluster cluster1    11/30/20 5:39:28 AM   0x10da2bbac  Shelf 2    Bay 22  0x289457ac  DA Error
volume04     4    Host Cluster cluster1    11/30/20 5:39:28 AM   0x10da2bbad  Shelf 2    Bay 22  0x289457ad  DA Error
volume05     5    Host Cluster cluster1    11/30/20 10:42:42 AM  0xa806930a   Shelf 1    Bay 10  0x3ee0d20a  DA Error

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.