[lustre-discuss] mounting OSTs of failed node on other nodes

[Brian Andrus]

You would want to do the tune2fs first and then mount it. But yep, that 
is the gist of what you would do.

Brian


On 11/28/2017 4:51 PM, E.S. Rosenberg wrote:
> So it turns out that when I setup this lustre filesystem I defined it 
> for failover even though the vendor back then (2.4-2.5 days) was very 
> negative about it.
> We never had an opportunity to actually test failover properly but it 
> worked nicely now, thanks to all the great people who work on this 
> project! :)
>
> I am still curious though, assuming I had not done the original setup 
> for failover what steps would I now take to make these OSTs available?
> I assume it's something like:
> - mount OSTs
> - tune2fs --writeconf [what?]
>
> Correct?
>
> Thanks again!
> Eli
>
> On Wed, Nov 29, 2017 at 2:40 AM, Brian Andrus <toomuchit at gmail.com 
> <mailto:toomuchit at gmail.com>> wrote:
>
>     It should be possible.
>
>     You will need to update the config (writeconf) to reflect the IP
>     of the host (failnode or servicenode).
>     This way, when it reports to the MGS, it is known and will be
>     accepted into the mix :)
>
>     Brian Andrus
>
>
>     On 11/28/2017 4:35 PM, E.S. Rosenberg wrote:
>>     Hi everyone,
>>     One of our OSS nodes failed to come back up after a firmware upgrade.
>>     I'd like to mount its' OSTs on one or more of the other OSSs to
>>     allow the filesystem to remain available.
>>     Is this possible?
>>     Thanks,
>>     Eli
>>
>>
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