(35009) ZFS home misinterpreted as Boot Camp by Backblaze

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(35009) ZFS home misinterpreted as Boot Camp by Backblaze

Post by grahamperrin » Thu Nov 15, 2012 3:59 pm

For reference, here's a copy of my request for assistance submitted to Backblaze.

----
#35009 CoreStorage encrypted ZFS home directory misinterpreted as Boot Camp

ZEVO Community Edition 1.1.1 on OS X 10.8.2.

ZFS home directory encrypted with CoreStorage as outlined at
http://apple.stackexchange.com/a/52920/8546

Backblaze 2.1.0.572 misinterprets the ZFS file system, and its backup (also ZFS) as Boot Camp.

Screenshots at
http://www.wuala.com/grahamperrin/publi ... de=gallery
and attached. …
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review

Post by grahamperrin » Tue Dec 11, 2012 1:55 am

Following a first response from The Backblaze Team, on 2012-11-21 I wrote:

Please review this.

Backblaze 2.1.0.572 seems to be:

* good with ZFS (ZEVO Community Edition 1.1.1 (ZFS pool version 28, ZFS filesystem version 5))

* not good when Apple CoreStorage is used as the layer for encryption …


As my most important data – the dataset that is encrypted – can not be backed up by Backblaze, I uninstalled the software and allowed the trial to lapse without purchasing a subscription.
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Re: review

Post by amteza » Tue Dec 11, 2012 2:41 am

grahamperrin wrote:Following a first response from The Backblaze Team, on 2012-11-21 I wrote:

Please review this.

Backblaze 2.1.0.572 seems to be:

* good with ZFS (ZEVO Community Edition 1.1.1 (ZFS pool version 28, ZFS filesystem version 5))

* not good when Apple CoreStorage is used as the layer for encryption …


As my most important data – the dataset that is encrypted – can not be backed up by Backblaze, I uninstalled the software and allowed the trial to lapse without purchasing a subscription.

Hi there Graham, let me recommend you Arq: http://www.haystacksoftware.com/arq/
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cross reference

Post by grahamperrin » Tue Dec 11, 2012 10:33 am

Thanks, suggestions for anything other than Backblaze might go under
Need Help with a Backup Solution
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(47668) Core Storage causes Backblaze to misinterpret ZFS

Post by grahamperrin » Sun Apr 07, 2013 11:57 am

Now with version 2.1.0.5 80 of Backblaze I have begun a follow-up:

#47668 Apple Core Storage for encryption causes Backblaze to misinterpret ZFS as Boot Camp

Adapted from my report to Backblaze:



The 'ZFS Pool' file system personality (alias: ZFS) is supported by Apple diskutil(8) when ZEVO Community Edition 1.1.1 is installed. …

Other users of ZEVO report that Backblaze works with their ZFS file systems. Kudos to Backblaze!

The complication: Core Storage. When this Apple technology is used for encryption at the pool (storage system) level:

  • Backblaze misinterprets things at the file system level
  • ZFS is misinterpreted as Boot Camp.

As the distinctions of Backblaze include encryption, I'd love to progress this issue.

Please, what can I do to help?

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Re: (35009) ZFS home misinterpreted as Boot Camp by Backblaz

Post by ilovezfs » Sat Apr 13, 2013 9:15 am

Graham,

I cannot reproduce the "boot camp" bug using
- OS X 10.8.3
- ZEVO 1.1.1
- Backblaze 2.1.0.580
- one drive
- File Vault encrypted boot partition in a first Core Storage LVG
- second, separate Core Storage LVG (on the same drive as the boot partition) containing zfs home directory.

It doesn't matter whether I use the root of the pool for the home directory or a child data set for the home directory--both seem to work fine. Nothing about "bootcamp" shows up in Backblaze.

It also works fine if the boot partition is a regular, non Core Storage, unencrypted partition, and the home directory is ZFS in an encrypted Core Storage LVG+LV.

I tried it with the encrypted CS+LVG+LV zfs home directory on a second drive, and that seems to be fine, as well.

Maybe some more details about your specific configuration could help to figure out what's going on for you, but I don't think it's Backblaze.
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Windows directory at the root of the volume

Post by grahamperrin » Sat Apr 13, 2013 11:55 am

I sought advice from Backblaze staff. The presence of a directory causes the misinterpretation:

Code: Select all
macbookpro08-centrim:~ gjp22$ ls -dl ~/Windows
drwxr-xr-x  4 gjp22  staff  6 29 Aug  2009 /Volumes/gjp22/Windows
macbookpro08-centrim:~ gjp22$ zfs get mountpoint gjp22
NAME   PROPERTY    VALUE           SOURCE
gjp22  mountpoint  /Volumes/gjp22  default


So it seems that the issue is unrelated to Core Storage. Since setting aside that directory, Backblaze allows me to select my ZFS home:

2013-04-13 17-45-09 screenshot.png
2013-04-13 17-45-09 screenshot.png (131.87 KiB) Viewed 80 times


I'll:
  • remove Backblaze from the shortlist of apps, services etc. that may be imperfect with ZEVO
  • discover the origin of that Windows directory
  • treat this topic as #done
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Re: (35009) ZFS home misinterpreted as Boot Camp by Backblaz

Post by ilovezfs » Sat Apr 13, 2013 12:11 pm

That is hilarious. Because of course the best way to detect a Boot Camp partition is by looking for a directory named "Windows" at the root! Yikes. Well, I guess we know how to force it to back up Boot Camp partitions now!
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Re: (35009) ZFS home misinterpreted as Boot Camp by Backblaz

Post by grahamperrin » Sat Apr 13, 2013 12:27 pm

Yeah, remove Windows :-)
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