Re: raid6 rebuild

2007-04-05 Thread Lennert Buytenhek
On Wed, Apr 04, 2007 at 08:22:00PM -0700, Dan Williams wrote: While my RAID6 array was rebuilding after one disk had failed (which I replaced), a second disk failed[*], and this caused the rebuild process to start over from the beginning. Why would the rebuild need to start over from the

Re: raid1 does not seem faster

2007-04-05 Thread Iustin Pop
On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be done, some balance between the read time, seek time, and read size could be done. Using more than one drive only makes sense when the read transfer time is significantly

Re: raid6 rebuild

2007-04-05 Thread Lennert Buytenhek
On Thu, Apr 05, 2007 at 07:03:08AM +0100, Gordon Henderson wrote: While my RAID6 array was rebuilding after one disk had failed (which I replaced), a second disk failed[*], and this caused the rebuild process to start over from the beginning. Why would the rebuild need to start over

Re: raid6 rebuild

2007-04-05 Thread Gordon Henderson
On Thu, 5 Apr 2007, Lennert Buytenhek wrote: [*] probably an entirely defective batch of 14 Samsung Spinpoint 500G disks Lets hope not... Keep checking those SMART values... Failed disk #2 still reports a SMART status of PASSED.. Hmmm.. I'd be tempted to double check your hardware +

Re: raid6 rebuild

2007-04-05 Thread Lennert Buytenhek
On Thu, Apr 05, 2007 at 09:15:38AM +0100, Gordon Henderson wrote: [*] probably an entirely defective batch of 14 Samsung Spinpoint 500G disks Lets hope not... Keep checking those SMART values... Failed disk #2 still reports a SMART status of PASSED.. Hmmm.. I'd be tempted to double

Re: raid1 does not seem faster

2007-04-05 Thread Justin Piszcz
On Thu, 5 Apr 2007, Iustin Pop wrote: On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be done, some balance between the read time, seek time, and read size could be done. Using more than one drive only makes sense when

Re: raid6 rebuild

2007-04-05 Thread Gordon Henderson
On Wed, 4 Apr 2007, Lennert Buytenhek wrote: (please CC on replies, not subscribed to linux-raid@) Hi! While my RAID6 array was rebuilding after one disk had failed (which I replaced), a second disk failed[*], and this caused the rebuild process to start over from the beginning. Why would

Re: raid1 does not seem faster

2007-04-05 Thread Bill Davidsen
Iustin Pop wrote: On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be done, some balance between the read time, seek time, and read size could be done. Using more than one drive only makes sense when the read transfer

Re: raid6 rebuild

2007-04-05 Thread Bill Davidsen
Lennert Buytenhek wrote: On Wed, Apr 04, 2007 at 08:22:00PM -0700, Dan Williams wrote: While my RAID6 array was rebuilding after one disk had failed (which I replaced), a second disk failed[*], and this caused the rebuild process to start over from the beginning. Why would the rebuild need

Re: raid1 does not seem faster

2007-04-05 Thread Iustin Pop
On Thu, Apr 05, 2007 at 04:11:35AM -0400, Justin Piszcz wrote: On Thu, 5 Apr 2007, Iustin Pop wrote: On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be done, some balance between the read time, seek time, and read

Re: raid1 does not seem faster

2007-04-05 Thread Justin Piszcz
On Thu, 5 Apr 2007, Iustin Pop wrote: On Thu, Apr 05, 2007 at 04:11:35AM -0400, Justin Piszcz wrote: On Thu, 5 Apr 2007, Iustin Pop wrote: On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be done, some balance between

RAID1 out of memory error, was Re: 2.6.21-rc5-mm4

2007-04-05 Thread Reuben Farrelly
Hi, On 3/04/2007 3:47 PM, Andrew Morton wrote: ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc5/2.6.21-rc5-mm4/ - The oops in git-net.patch has been fixed, so that tree has been restored. It is huge. - Added the device-mapper development tree to the -mm lineup

Re: raid6 rebuild

2007-04-05 Thread Dan Williams
On 4/5/07, Lennert Buytenhek [EMAIL PROTECTED] wrote: On Thu, Apr 05, 2007 at 09:54:14AM -0400, Bill Davidsen wrote: I confess, I would feel safer with my data if the rebuild started over, I would like to be sure that when it (finally) finishes the data are valid. With disk #3 about to die,

Re: Kernel 2.6.20.4: Software RAID 5: ata13.00: (irq_stat 0x00020002, failed to transmit command FIS)

2007-04-05 Thread Justin Piszcz
On Thu, 5 Apr 2007, Justin Piszcz wrote: Had a quick question, this is the first time I have seen this happen, and it was not even under during heavy I/O, hardly anything was going on with the box at the time. .. snip .. # /usr/bin/time badblocks -b 512 -s -v -w /dev/sdl Checking for bad

Re: raid1 does not seem faster

2007-04-05 Thread Bill Davidsen
Justin Piszcz wrote: On Thu, 5 Apr 2007, Iustin Pop wrote: On Thu, Apr 05, 2007 at 04:11:35AM -0400, Justin Piszcz wrote: On Thu, 5 Apr 2007, Iustin Pop wrote: On Wed, Apr 04, 2007 at 07:11:50PM -0400, Bill Davidsen wrote: You are correct, but I think if an optimization were to be

Re: RAID1 out of memory error, was Re: 2.6.21-rc5-mm4

2007-04-05 Thread Andrew Morton
On Fri, 06 Apr 2007 02:33:03 +1000 Reuben Farrelly [EMAIL PROTECTED] wrote: Hi, On 3/04/2007 3:47 PM, Andrew Morton wrote: ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc5/2.6.21-rc5-mm4/ - The oops in git-net.patch has been fixed, so that tree has been

Re: Any Intel folks on the list? Intel PCI-E bridge ACPI resource question

2007-04-05 Thread Justin Piszcz
My .config is attached.. I cannot reproduce this problem, it only happened once, but I want to find out how to make sure it does not happen again. On Thu, 5 Apr 2007, Justin Piszcz wrote: On Thu, 5 Apr 2007, Justin Piszcz wrote:

Re: RAID1 out of memory error, was Re: 2.6.21-rc5-mm4

2007-04-05 Thread Dan Williams
On 4/5/07, Andrew Morton [EMAIL PROTECTED] wrote: On Fri, 06 Apr 2007 02:33:03 +1000 Reuben Farrelly [EMAIL PROTECTED] wrote: Hi, On 3/04/2007 3:47 PM, Andrew Morton wrote: ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc5/2.6.21-rc5-mm4/ - The oops in