Peter Schuller wrote:
> > fsync() is, indeed, expensive. Lots of calls to fsync() that are not
> > necessary for correct application operation EXCEPT as a workaround for
> > lame filesystem re-ordering are a sure way to kill performance.
>
> IMO the fundamental problem is that the only way to ac
You also DON'T want to give a single disk to your rpool. ZFS really
needs to be able to fix errors when it finds them.
Suggest you read the ZFS Best Practices Guide (again).
http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#Storage_Pools
Mike
Tomas Ögren wrote:
On 19 M
On Thu, 19 Mar 2009, Harry Putnam wrote:
So raidz1 would probably be adequate for me... I wouldn't be putting
it to the test like a commercial operation might.
Yes, but it is pointless to use it with three disks since a mirror
provides the same space using only two disks and is therefore 1/3
2009/3/19 Richard Elling
> José Gomes wrote:
>
>> Can we assume that any snapshot listed by either 'zfs list -t snapshot' or
>> 'ls .zfs/snapshot' and previously created with 'zfs receive' is complete and
>> correct? Or is it possible for a 'zfs receive' command to fail
>> (corrupt/truncated stre
2009/3/19 Matthew Ahrens
> José Gomes wrote:
>
>> Can we assume that any snapshot listed by either 'zfs list -t snapshot' or
>> 'ls .zfs/snapshot' and previously created with 'zfs receive' is complete and
>> correct? Or is it possible for a 'zfs receive' command to fail
>> (corrupt/truncated stre
On Fri, Mar 20, 2009 at 14:57, Bob Friesenhahn
wrote:
> On Thu, 19 Mar 2009, Harry Putnam wrote:
>>
>> So raidz1 would probably be adequate for me... I wouldn't be putting
>> it to the test like a commercial operation might.
>
> Yes, but it is pointless to use it with three disks since a mirror pr
Bob Friesenhahn writes:
>>> With five disks, raidz1 becomes useful.
>>
>> The three 500gb I have now are all one brand and model number and IDE ata.
>> If I were to expand to 5, those 2 would need to be sata or else I'd
>> also need to add a PCI IDE controller.
>>
>> With that in mind would it be
On Fri, 20 Mar 2009, Will Murnane wrote:
Yes, but it is pointless to use it with three disks since a mirror provides
the same space using only two disks
Huh? A three-disk raidz1 provides as much space as two disks, a
mirror of two disks provides as much space as one disk.
Sorry about that. B
>So is 5 with 1 hotswap (total 6) a sensible arrangement? And would
>that leave me with something like 2tb (minus manufacturer exaggeration)
>and one disk would be swallowed for parity data.
Yeah, yeah. Perhaps you can ask the "SI" to change the definition of
"T" from 10^12 to 2^40. The only p
casper@sun.com writes:
>>So is 5 with 1 hotswap (total 6) a sensible arrangement? And would
>>that leave me with something like 2tb (minus manufacturer exaggeration)
>>and one disk would be swallowed for parity data.
>
> Yeah, yeah. Perhaps you can ask the "SI" to change the definition of
> "
Harry,
Bob F. has give you some excellent advice about using mirrored
configurations. I can answer your RAIDZ questions but your original
configuration was for a root pool and non-root pool using 4 disks
total.
Start with two mirrored pools of two disks each. In the future,
you will be able to a
ALERT.. Long Winded reply ahead..
cindy.swearin...@sun.com writes:
> Harry,
>
> Bob F. has give you some excellent advice about using mirrored
> configurations. I can answer your RAIDZ questions but your original
> configuration was for a root pool and non-root pool using 4 disks
> total.
I didn
Replies inline (I really would recommend reading the whole ZFS Best
Practices guide a few times - many of your questions are answered in
that document):
On Fri, Mar 20, 2009 at 3:15 PM, Harry Putnam wrote:
>
> I didn't make it clear. 1 disk, the one with rpool on it is 60gb.
> The other 3 are 5
Blake writes:
> Replies inline (I really would recommend reading the whole ZFS Best
> Practices guide a few times - many of your questions are answered in
> that document):
First, I hope you don't think I am being hard headed and not reading
the documentation you suggest. I have some trouble re
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