Yeah!

Jason Belec
Sent from my "It's an iPod, a Phone, and an Internet Device..."

> On Nov 11, 2014, at 3:27 PM, Dave Cottlehuber <d...@jsonified.com> wrote:
> 
> Hey folks,
> 
> It’s always useful to be able to point new users to how zfs benefits them, so 
> here’s another one, both the flexibility of datasets, as well as relying on 
> zpool scrub to ensure data integrity.
> 
> About 2 weeks ago, my laptop blew up its GPU (6th time this year) so it was 
> in for repair. This happens so often, I just switch to the nearest other 
> machine and grab my latest replicated datasets for whatever project I’m 
> working on while they repair it.
> 
> However after a few strange clicks starting on Sunday, that 2nd machine 
> started to have problems too. It failed to boot from OSX sometimes, and 
> eventually I could only get it to work from internet recovery boot. Such fun. 
> I was able to confirm my data was OK, by running zpool scrub again after 
> booting via FreeBSD — mfsBSD[1] is excellent for this. Of course, I had no 
> way of knowing if the HFS+ partition used for OSX itself, was corrupt or not, 
> nor knowing if the time machine backups also had silent corruption. Apple’s 
> disk repair didn’t report any issues, but a 3rd party smart utility showed a 
> high, and increasing, rate of failed sectors and unrecoverable reads. OSX 
> still wouldn’t boot, so I booted up FreeBSD and did a final ‘zfs send’ to my 
> remote server.
> 
> I co-opted a netbook from a friend, and continued working over ssh for the 
> rest of the day, while my main hardware was in for repair. replicated zfs 
> datasets FTW again.
> 
> Once the laptop hardware was repaired, recovery was as simple as pulling back 
> the newer snapshots from the FreeBSD server, and I was back up and running in 
> minutes. I spent more time organising the repairs than managing data recovery.
> 
> So many many thanks to lundman, brendon, ilovezfs, Björn and others for 
> keeping this ship up and running over the years.
> 
> A+, Dave
> — sent from my Couch
> 
> [1]: http://mfsbsd.vx.sk/
> [2]: my setup
> — running very recent zfsonosx builds from source
>     Feb 2011 MacBook Pro 15”, dual SSD, 16GB RAM
>     Jan 2013 iMac 27”, 3TB disk, 32GB RAM
> — FreeBSD 10.1-BETA3-p1 (living on the edge)
>     FreeBSD 8 core server, 3TB disks, mirrored zpool, 32GB ECC RAM
> 
> 
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