[j-nsp] JunOS on EX-4200 stack corruption

[TiM]

On Thu, October 7, 2010 1:00 pm, Dale Shaw wrote:
> Hi Tim,
>
> On Thu, Oct 7, 2010 at 10:09 AM, TiM <tim at muppetz.com> wrote:
>> Has anyone seen an issues where, once a stack looses power (all at once,
>> sadly), some members of the stack come up with corrupt JunOS on them?
>>
>> We have a stack of 6 EX4200's.  Due to a power issue, all 6 lost power
>> at
>> the same time.  When power was restored, the Master, the Backup and one
>> linecard mode switch came up fine.  The 3 other linecard mode switches
>> didn't.  On powerup they all reported shared libaries not being found
>> and
>> similar "file not found" type errors.
>>
>> Reinstalling JunOS from the boot prompt has fixed the problem.
>>
>> Has anyone else encountered corrupt JunOS problems on EX4200's,
>> specifically in a stack configuration, before?
>
> Yes, it's been a serious, ongoing problem for us. We have ~1200
> switches across ~360 VCs. We're running JUNOS 10.0S1.
>
> There is a PR for the problem - it's PR/543776. There is no permanent
> fix as yet but there is a workaround available in 10.0R4, 10.1R4,
> 10.2R3, 10.3R2, 10.4R1 or later. It's called 'Automatic File System
> Mirroring and Automatic Recovery' and at this stage you'll need to
> talk to JTAC about it.
>
> cheers,
> Dale

Thanks very much Dale and thanks everyone else who replied.

Looks like we are, sadly, not alone.

Regards,

Tim