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Cisco Bug: CSCum95660 - MC image booting,Raw directory magic did not match start_magic

Last Modified

Jul 20, 2018

Products (18)

  • Cisco Carrier Routing System
  • Cisco CRS-1 Line Card Chassis (Dual)
  • Cisco CRS-X 8-Slot Single-Shelf System
  • Cisco CRS-1 16-Slot Line Card Chassis
  • Cisco CRS-3 Multishelf System
  • Cisco CRS-1 Line Card Chassis (Multi)
  • Cisco CRS-X Multishelf System
  • Cisco CRS-1 4-Slot Single-Shelf System
  • Cisco IOS XR Software
  • Cisco CRS-1 Fabric Card Chassis
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Known Affected Releases

5.1.3.BASE

Description (partial)

Symptom:
PRP card throws below error log message. 
Raw directory magic did not match start_magic:5a5a5a5a end_magic:5a5a5a5a

Conditions:
Have a CRS system with PRP cards for RP slots. 
Reload of PRP cards. 
As part of PRP boot below error log message is observed. 
Raw directory magic did not match start_magic:5a5a5a5a end_magic:5a5a5a5a

This issue has 2 minor impacts which are important only in negative cases such as kernel crashes and reboot history loss. These items would not result in any traffic impact:
 
1) Kernel dumper does not create crash files because of which debugging is more difficult for a TAC engineer. 
2) Reboot history would not get captured. So we cannot find the reboot time stamps for this card.

Related Community Discussions

CRS: PRP 使用時に kernel dump や reboot history が保存されない
2015年1月23日(初版) TAC SR Collection 主な問題 CRS シリーズルータで PRP 使用時に、kernel dump や reboot history が保存されない問題が報告されています。 原因 IOS-XR Kernel の SSD ドライバの設定に問題があった為、Kernel Mode で SSD に対して書込みが失敗する場合がありました。 この問題は <key>CSCum95660</key> として報告されています。 | <key>CSCum95660</key>: MC image booting,Raw directory magic did not match start_magic   &lt;問題の確認方法&gt; PRP | 起動時に以下のログが出力された場合は、この問題が発生します。 &lt; | snip&gt; Cisco IOS XR Software for the Cisco XR HFR, Version X.X.X Copyright (c) 2012 by Cisco Systems, Inc. Path=0 - Intel PCH AHCI  target=0 lun=0     Direct-Access(0) ...
Latest activity: Jan 23, 2015
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