Mike Hardy <mhardy@xxxxxxx> writes:
> I posted a raid5 parity calculator implemented in perl a while back (a
> couple weeks?) that is capable of taking your disk geometry, the RAID
> LBA you're interested in, and finding the disk sector it belongs to.
>
> I honestly don't remember if it can go the other way, but I'm not sure
> why it couldn't? Its possible that bad blocks may simply be in the
> parity chunk of the stripe too. Once you've got the RAID LBA you can
> use the methods in the BadBlockHowto to find the file
That helps. Although there is a typo in line 139. See diff below.
When I know the RAID LBA how do I find out to which LV it belongs and
which sector it is in there? But, I guess I better ask that on a LVM
list.
Matthias
--- raid5calc.orig 2005-02-23 08:26:43.721332354 -0500
+++ raid5calc 2005-02-23 08:30:12.673100526 -0500
@@ -136,7 +136,7 @@
# Testing only -
# Check to see if the result I got is the same as what is in the block
open (DEVICE, "<" . $component{"device"})
- || die "Unable to open device " . $compoent{"device"} . ": " . $! . "\n";
+ || die "Unable to open device " . $component{"device"} . ": " . $! . "\n";
seek(DEVICE, $device_offset, 0)
|| die "Unable to seek to " . $device_offset . " device " . $xor_devices{$i} . ": " . $! . "\n";
read(DEVICE, $data, ($sectors_per_chunk * 512))
-
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