On Sat, 13 Jan 2007, Robin Bowes wrote:
> Bill Davidsen wrote:
> >
> > There have been several recent threads on the list regarding software
> > RAID-5 performance. The reference might be updated to reflect the poor
> > write performance of RAID-5 until/unless significant tuning is done.
> > Read
On 13 Jan 2007, [EMAIL PROTECTED] uttered the following:
> On 12 Jan 2007, Ernst Herzberg told this:
>> Then every about 60 sec 4 times
>>
>> event=SpareActive
>> mddev=/dev/md3
>
> I see exactly this on both my RAID-5 arrays, neither of which have any
> spare device --- nor have any active device
On 13 Jan 2007, [EMAIL PROTECTED] spake thusly:
> On 12 Jan 2007, Ernst Herzberg told this:
>> Then every about 60 sec 4 times
>>
>> event=SpareActive
>> mddev=/dev/md3
>
> I see exactly this on both my RAID-5 arrays, neither of which have any
> spare device --- nor have any active devices transit
Bill Davidsen wrote:
>
> There have been several recent threads on the list regarding software
> RAID-5 performance. The reference might be updated to reflect the poor
> write performance of RAID-5 until/unless significant tuning is done.
> Read that as tuning obscure parameters and throwing a lot
On Fri, 12 Jan 2007, Neil Brown might have said:
> On Thursday January 11, [EMAIL PROTECTED] wrote:
> > Can someone tell me what this means please? I just received this in
> > an email from one of my servers:
> >
>
>
> >
> > A FailSpare event had been detected on md device /dev/md2.
> >
>
On 12 Jan 2007, Ernst Herzberg told this:
> Then every about 60 sec 4 times
>
> event=SpareActive
> mddev=/dev/md3
I see exactly this on both my RAID-5 arrays, neither of which have any
spare device --- nor have any active devices transitioned to spare
(which is what that event is actually suppose
Dan Williams wrote:
On 1/12/07, James Ralston <[EMAIL PROTECTED]> wrote:
On 2007-01-12 at 09:39-08 dean gaudet <[EMAIL PROTECTED]> wrote:
> On Thu, 11 Jan 2007, James Ralston wrote:
>
> > I'm having a discussion with a coworker concerning the cost of
> > md's raid5 implementation versus hardwar
On Sat, 13 Jan 2007, Al Boldi wrote:
> Justin Piszcz wrote:
> > On Sat, 13 Jan 2007, Al Boldi wrote:
> > > Justin Piszcz wrote:
> > > > Btw, max sectors did improve my performance a little bit but
> > > > stripe_cache+read_ahead were the main optimizations that made
> > > > everything go faster
On 1/12/07, James Ralston <[EMAIL PROTECTED]> wrote:
On 2007-01-12 at 09:39-08 dean gaudet <[EMAIL PROTECTED]> wrote:
> On Thu, 11 Jan 2007, James Ralston wrote:
>
> > I'm having a discussion with a coworker concerning the cost of
> > md's raid5 implementation versus hardware raid5 implementatio