This patch adds RAID1 read balancing to device mapper. A read operation
that is close (in terms of sectors) to a previous read or write goes to
the same mirror.
Signed-off-by: Konstantin Sharlaimov [EMAIL PROTECTED]
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Please give it a try, it works for me, yet my results might be
Greg Cormier wrote:
Any reason 0.9 is the default? Should I be worried about using 1.0
superblocks? And can I upgrade my array from 0.9 to 1.0 superblocks?
Do understand that Neil may have other reasons... but mainly the 0.9
format is the default because it is most widely supported and
On Sat, 03 Nov 2007 20:08:42 +1000
Konstantin Sharlaimov [EMAIL PROTECTED] wrote:
This patch adds RAID1 read balancing to device mapper. A read
operation that is close (in terms of sectors) to a previous read or
write goes to the same mirror.
Signed-off-by: Konstantin Sharlaimov [EMAIL
On Fri, 2007-11-02 at 23:16 +0100, Janek Kozicki wrote:
Bill Davidsen said: (by the date of Fri, 02 Nov 2007 09:01:05 -0400)
So I would expect this to make a very large performance difference, so
even if it work it would do so slowly.
I was trying to find out the stripe layout for
On Sat, 2007-11-03 at 21:21 +0100, Janek Kozicki wrote:
If you run mdadm -D /dev/md1 it will tell you the data offset
(in sectors IIRC).
Uh, I don't see it:
Sorry, it's part of mdadm -E instead:
[EMAIL PROTECTED] ~]# mdadm -E /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
berk walker wrote:
H. Peter Anvin wrote:
Doug Ledford wrote:
device /dev/sda (hd0)
root (hd0,0)
install --stage2=/boot/grub/stage2 /boot/grub/stage1 (hd0)
/boot/grub/e2fs_stage1_5 p /boot/grub/stage2 /boot/grub/menu.lst
device /dev/hdc (hd0)
root (hd0,0)
install --stage2=/boot/grub/stage2
Bill Davidsen wrote:
Depends how bad the drive is. Just to align the thread on this -
If the boot sector is bad - the bios on newer boxes will skip to the
next one. But if it is good, and you boot into garbage - - could be
Windows.. does it crash?
Right, if the drive is dead almost
H. Peter Anvin wrote:
Bill Davidsen wrote:
Depends how bad the drive is. Just to align the thread on this -
If the boot sector is bad - the bios on newer boxes will skip to the
next one. But if it is good, and you boot into garbage - - could
be Windows.. does it crash?
Right, if the
