Hugo Mills writes:
>It has to be disabled because if you enable it, there's a race
> condition: since you're overwriting existing data (rather than CoWing
> it), you can't update the checksums atomically. So, in the interests
> of consistency, checksums are disabled.
I
On 18 October 2015 at 16:46, Duncan <1i5t5.dun...@cox.net> wrote:
> Xavier Gnata posted on Sat, 17 Oct 2015 18:36:32 +0200 as excerpted:
>
>> Hi,
>>
>> On a desktop equipped with an ssd with one 100GB virtual image used
>> frequently, what do you recommend?
>> 1) nothing special, it is all fine as
On 2015-10-19 02:19, Erkki Seppala wrote:
Hugo Mills writes:
It has to be disabled because if you enable it, there's a race
condition: since you're overwriting existing data (rather than CoWing
it), you can't update the checksums atomically. So, in the interests
of
Austin S Hemmelgarn writes:
> And that is exactly the case with how things are now, when something
> is marked NOCOW, it has essentially zero guarantee of data consistency
> after a crash.
Yes. In addition to the zero guarantee of the data validity for the data
being
On 2015-10-19 12:13, Erkki Seppala wrote:
Austin S Hemmelgarn writes:
And that is exactly the case with how things are now, when something
is marked NOCOW, it has essentially zero guarantee of data consistency
after a crash.
Yes. In addition to the zero guarantee of
On 18/10/2015 07:46, Duncan wrote:
Xavier Gnata posted on Sat, 17 Oct 2015 18:36:32 +0200 as excerpted:
Hi,
On a desktop equipped with an ssd with one 100GB virtual image used
frequently, what do you recommend?
1) nothing special, it is all fine as long as you have a recent kernel
(which I
On Sun, Oct 18, 2015 at 10:24:39AM -0400, Rich Freeman wrote:
> On Sat, Oct 17, 2015 at 12:36 PM, Xavier Gnata wrote:
> > 2) Disabling copy-on-write for just the VM image directory.
>
> Unless this has changed, doing this will also disable checksumming. I
> don't see any
On Sat, Oct 17, 2015 at 12:36 PM, Xavier Gnata wrote:
> 2) Disabling copy-on-write for just the VM image directory.
Unless this has changed, doing this will also disable checksumming. I
don't see any reason why it has to, but it does. So, I avoid using
this at all
Xavier Gnata posted on Sat, 17 Oct 2015 18:36:32 +0200 as excerpted:
> Hi,
>
> On a desktop equipped with an ssd with one 100GB virtual image used
> frequently, what do you recommend?
> 1) nothing special, it is all fine as long as you have a recent kernel
> (which I do)
> 2) Disabling