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 implementations.
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 hardware raid5
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 supposed
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.
It could be
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 of
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 transitioned to
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 devices
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 that as
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 by about ~1.5x.
