[Clusterusers] Rebooting keg

[Wm. Josiah Erikson]

Whew. We're back.
I will not forget again that MS-DOS partition tables have a maximum size 
of 2TB :)
Also, dd if=<source partition table drive> of=<target partition table 
drive> bs=512 count=1 is a great trick for restoring busted partition 
tables from a disk with an identical, good one :)

I'll have to do it all again, but next time I'll use GPT partition 
tables, once I verify that keg's BIOS can boot from one.

     -Josiah

On 1/10/14 1:54 PM, Wm. Josiah Erikson wrote:
> Um. Well. The RAID array now won't start - the two disks I already 
> resized aren't being properly recognized. Hold on while I attempt to 
> not have just lost keg (though we have backups of all the truly 
> important stuff, of course). Wish me luck!
> I guess I shouldn't do anything on Fridays....
>     -Josiah
>
>
> On 1/10/14 1:31 PM, Wm. Josiah Erikson wrote:
>> Hi all,
>>     I'm taking keg down briefly in a few minutes to upgrade its 
>> processor to improve RAID-5 rebuild times. I'm resizing the array to 
>> take full advantage of its "new" 3TB disks, and I'm being seriously 
>> CPU-bound on the rebuild times, which are in the 10-18 hour range 
>> currently - annoying to wait that long. I happen to have a 
>> twice-as-fast processor sitting around, so I'm going to slap it in 
>> there. Downtime should be brief.
>>
>

-- 
Wm. Josiah Erikson
Assistant Director of IT, Infrastructure Group
System Administrator, School of CS
Hampshire College
Amherst, MA 01002
(413) 559-6091