Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition | |||
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Solution Type Technical Instruction Sure Solution 1004870.1 : Sun Fire[TM] V1280-E15000:Tech Tip:An offlined processor can be involved in a panic in rare cases
PreviouslyPublishedAs 206832 Description An offlined processor can be involved in a panic in rare cases. Steps to Follow An offlined processor (as opposed to a blacklisted processor) continues to run a small amount of code (the idle loop, cross traps etc). It is possible for an offlined processor to still trigger L2 SRAM uncorrectable errors (for example, UCC) in rare cases. Enhancements in ScApp firmware 5.15.3/SMS 1.4 and Solaris 8[TM] Kernel Update 24 (KU24) will offline the processor if the Soft Error Rate Discrimination (SERD) count for correctable (xxC) events is exceeded or if there is a single uncorrectable (xxU) event. Solaris indictments are stored in the FRUID CHS (Component Health Status), and the offlined processor (including the memory that it controls) will be removed by POST on the next reboot of the system. There is a window of opportunity where the potential for a panic exists from the time when a processor has been offined to when it actually is deconfigured and removed completely when the offlined processor can take L2 SRAM errors that can subsequently lead to the panic of a system. Offlined CPUs (as above) do continue to run small amounts of code which could still suffer errors which lead to the subsequent panic of a system. Offlining is a guard against fatal UCC events, though it is not risk free. It is recommended that the board that contained the offline processor be removed from the system as soon as practical by rebooting or scheduling maintenance. Note: Using Dynamic Reconfiguration is not recommended as this will force the failing cpu to run additional code which may aggrevate this condition. Product Sun Fire V1280 Server Sun Fire 6800 Server Sun Fire 4810 Server Sun Fire 4800 Server Sun Fire 3800 Server Sun Fire 15K Server Sun Fire 12K Server Internal Comments Please see bug 4947174, 4884166. offline, DR, UCC, panic, 3800, 4800, 4810, 6800, 1280, 15K, 12K Previously Published As 72539 Change History Date: 2004-05-17 User Name: 25440 Action: Approved Comment: Republishing as COntract Version: 0 Date: 2004-05-17 User Name: 25440 Action: Updated Comment: Pulling back to Draft to reissue as Contract Version: 0 Date: 2004-05-17 User Name: 25440 Action: Approved Comment: Republishing as "Public" per request from Omar Del Rio (via Laure Bouvin) Version: 0 Date: 2004-05-17 User Name: 25440 Action: Accepted Comment: Version: 0 Date: 2004-05-14 User Name: 97233 Action: Approved Comment: Added references to indicate that DR is not a safe option to remove an offlined processor for the system. Version: 0 Date: 2004-05-14 User Name: 97233 Action: Updated Comment: Moving to draft to make some changes. Version: 0 Date: 2004-03-16 User Name: 13128 Action: Approved Comment: KE quality checklist applied - Publish Version: 0 Date: 2004-03-09 User Name: 13128 Action: Accepted Comment: Version: 0 Date: 2004-03-08 User Name: 29589 Action: Unlock Comment: Version: 0 Date: 2004-03-03 User Name: 29589 Action: Accepted Comment: Version: 0 Date: 2004-03-02 User Name: 72607 Action: Approved Comment: Ok, Doc looks good, changes were made. Sending for final review... Version: 0 Date: 2004-03-02 User Name: 72607 Action: Accepted Comment: Version: 0 Date: 2004-03-02 User Name: 97233 Action: Approved Comment: Changed the title to reflect that this issue affects all ESP servers. Added SMS 1.4 to the content. Version: 0 Date: 2004-01-30 User Name: 32657 Action: Rejected Comment: You've added 12/15k to the product list, but the title doesn't include that yet. Also, do you want to mention SMS 1.4 (the first release which supports chs) for the 15k next to the comments re: scapp ? Version: 0 Date: 2004-01-30 User Name: 97233 Action: Approved Comment: Add sf12k/sf15k to the Infodoc Version: 0 Date: 2004-01-30 User Name: 97233 Action: Updated Comment: Need to add sf12k/sf15k to this infodoc Version: 0 Date: 2003-11-18 User Name: 43660 Action: Approved Comment: Added trademarks. Minor grammatical changes. Version: 0 Date: 2003-11-18 User Name: 72607 Action: Approved Comment: No comments, doc looks good and useful. Please publish Version: 0 Date: 2003-11-14 User Name: 97233 Action: Approved Comment: Pleas review ASAP. Version: 0 Date: 2003-11-14 User Name: 97233 Action: Created Comment: Version: 0 Product_uuid 6a74b2f9-bbd8-4b2c-870d-b6b73d6e224f|Sun Fire V1280 Server 29da7938-0a18-11d6-8a41-9ed1ad6d6779|Sun Fire 6800 Server 29d6f808-0a18-11d6-8aa8-943929fbbdd8|Sun Fire 4810 Server 29d3a694-0a18-11d6-92da-df959df44cdd|Sun Fire 4800 Server 29d05214-0a18-11d6-92b2-a111614865b5|Sun Fire 3800 Server 29e4659c-0a18-11d6-9fa1-e67bbc033df8|Sun Fire 15K Server 077fd4c5-df8f-4320-ad69-7d01603a674d|Sun Fire 12K Server Attachments This solution has no attachment |
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