Thought I should mention that converting to RAID 1 breaks the pretty RRD graph
for disk access. The problem lies in that it is looking for the essential
/dev/md becuase of the code chunk...
my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size,
$atime, $mtime, $ctime, $blksize, $blocks) = stat("/dev/root");
my $major = $rdev >> 8;
my $minor = 0;
Under raid this returns 9 0 where 9 is in fact the md devices but there is no 0
so nothing gets used.
Here some /proc/diskstats
8 0 sda 59501 3220 1312936 601612 9133635 20440298 236850362 60553304 0
5905063 61165288
8 1 sda1 24 1132 2 10
8 2 sda2 16 128 56 448
8 3 sda3 6784 171018 649963 5199704
8 4 sda4 55892 1140618 27168310 217346480
8 16 sdb 59345 3412 1341184 593760 9239989 20335039 236850362 59051655 0
5666532 59655972
8 17 sdb1 38 584 2 10
8 18 sdb2 41 328 56 448
8 19 sdb3 6012 148536 649963 5199704
8 20 sdb4 56662 1191696 27168309 217346472
9 1 md1 62 0 1716 0 2 0 10 0 0 0 0
9 4 md4 112554 0 2332314 0 27168310 0 217346480 0 0 0 0
9 3 md3 12796 0 319554 0 649963 0 5199704 0 0 0 0
9 2 md2 57 0 456 0 56 0 448 0 0 0 0
One solution would be to grab all the disks [major 8] and total up the data
from minor 0 and 16.
Just thought I bring it before RAID 1 gets into main stream use.
-Mike
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