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Lost chains in flash detected, please use fixdisk to recover them!

Dennis_HP-ATP
Occasional Advisor

Lost chains in flash detected, please use fixdisk to recover them!

After a tshoot session with one of my customers, I ran into the following message:

Lost chains in flash detected, please use fixdisk to recover them!

Root cause:
HP informed me that after more than 1 million flash write actions, the chance of flash memory corruption significly increases, causing bad sectors in flash memory.


This was triggered by the following command:
dhcp-snooping binding database filename flash:/dhcp.dbase
dhcp-snooping binding database update interval 1


Solution:
copy (in this case dhcp_dbase) to a remote tftp server instead of flash
or change the timer to an interval that you do not exceed the 1 million mark threshold advised by HP.


CLI output:

Starting......

********************************************************************************
* *
* HP A5120-48G-PoE+ EI Switch with 2 Interface Slots BOOTROM, Version 621 *
* *
********************************************************************************
Copyright (c) 2010-2013 Hewlett-Packard Development Company, L.P.
Creation date : Nov 12 2013, 02:05:35
CPU Clock Speed : 264MHz
BUS Clock Speed : 33MHz
Memory Size : 128MB
Mac Address : 4431922e8532

Press Ctrl-B to enter Boot Menu... 1 0
Auto-booting...
Decompress Image....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................OK!

Lost chains in flash detected, please use fixdisk to recover them!

Startup configuration file does not exist.
It will take a long time to get configuration file, please wait...
Press CTRL_C to break


Directory of flash:/
1 -rw- 479740 Apr 26 2000 12:09:15 a5120ei-btm-621.btm
2 -rw- 13602306 Aug 17 2016 15:31:21 a5120ei-cmw520-r2221p20.bin

1 REPLY
Dennis_HP-ATP
Occasional Advisor

Re: Lost chains in flash detected, please use fixdisk to recover them!

Please find the official HPE advisory attached.