From: Jay Heyl [mailto:j...@frelled.us]
Ah, that makes much more sense. Thanks for the clarification. Now that you
put it that way I have to wonder how I ever came under the impression it
was any other way.
I've gotten lost in the numerous mis-communications of this thread, but just to
From: Timothy Coalson [mailto:tsc...@mst.edu]
Did you also compare the probability of bit errors causing data loss
without a complete pool failure? 2-way mirrors, when one device
completely
dies, have no redundancy on that data, and the copy that remains must be
perfect or some data will
From: Jay Heyl [mailto:j...@frelled.us]
I now realize you're talking about 8 separate 2-disk
mirrors organized into a pool. mirror x1 y1 mirror x2 y2 mirror x3 y3...
Yup. That's normal, and the only way.
I also realize that almost every discussion I've seen online concerning
mirrors
From: Sebastian Gabler [mailto:sequoiamo...@gmx.net]
AFAIK, a bit error in Parity or stripe data can be specifically
dangerous when it is raised during resilvering, and there is only one
layer of redundancy left.
You're saying error in parity, but that's because you're thinking of raidz,
On 2013-04-18 12:46, Sebastian Gabler wrote:
I do not think that zfs will have better resilience against rot of
parity data than conventional RAID. At best, block level checksums can
help raise an error, so you know at least that something went wrong. But
recovery of the data will probably not
From: Jim Klimov [mailto:jimkli...@cos.ru]
Well, thanks to checksums we can know which variant of userdata
is correct, and thanks to parities we can verify which bytes are
wrong in a particular block. If there's relatively few such bytes,
it is theoretically possible to brute-force match
On 2013-04-18 15:57, Edward Ned Harvey (openindiana) wrote:
I think you're misplacing a decimal, confusing bits for bytes, and mixing up
exponents. Cuz you're way off.
With merely 70 unknown *bits* that is, less than 10 bytes, you'll need a
3-letter government agency devoting all its
On 2013-04-18 16:31, Guenther Alka wrote:
I have installed OpenIndiana server and OmniOS on 16 GB USB sticks.
This works very well especially with modern fast sticks, ZFS boot mirror
and atime set to off.
The problem is, that I can only boot from the USB port that was used
during setup.
On
Am 18.04.2013 16:28, schrieb openindiana-discuss-requ...@openindiana.org:
Message: 1
Date: Thu, 18 Apr 2013 12:17:47 +
From: Edward Ned Harvey (openindiana)openindi...@nedharvey.com
To: Discussion list for OpenIndiana
openindiana-discuss@openindiana.org
Subject: Re:
In the past I have used delegate to do port forwarding on our internal
servers, forwarding from a server directly connected to the internet, to
one that has no direct connection.
I was about to set up delegate to do the same job, when it struck me that I
should be able to use ipfilter, via ipnat
On Apr 18, 2013, at 2:15 PM, Jonathan Adams wrote:
In the past I have used delegate to do port forwarding on our internal
servers, forwarding from a server directly connected to the internet, to
one that has no direct connection.
I was about to set up delegate to do the same job, when it
BTW - My solution was to make etherstubs, and create a virtual router, with my
working zones in another network segment. Then everything works fine.
See:
http://www.c0t0d0s0.org/archives/5355-Upcoming-Solaris-Features-Crossbow-Part-1-Virtualisation.html
It's actually simple to do. If I can
On Thu, Apr 18, 2013 at 10:24 AM, Sebastian Gabler sequoiamo...@gmx.netwrote:
Am 18.04.2013 16:28, schrieb
openindiana-discuss-request@**openindiana.orgopenindiana-discuss-requ...@openindiana.org
:
Message: 1
Date: Thu, 18 Apr 2013 12:17:47 +
From: Edward Ned Harvey
From: Timothy Coalson [mailto:tsc...@mst.edu]
As for what I said about resilver speed, I had not accounted for the fact
that data reads on a raid-z2 component device would be significantly
shorter than for the same data on 2-way mirrors. Depending on whether
you
are using enormous block
On 18/04/2013 11:08 AM, Jay Heyl wrote:
One thing I would recommend is trying to use the ashift=12 setting to force
the use of 4k blocks. I ran into problems because my initial pools were
created with 512-byte blocks. When I bought some spare drives I couldn't
use them because they were
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