Hi!
I just booted my Linux box running kernel 2.2.14 using raid-2.2.14-B1
and raidtools-19990824-0.90. Because this was the first boot after
the system crashed yesterday evening, a lot of resync and filesystem
check had to be done. Within these resync procedures for the raid0
and raid5 volumes 2 messages appeared on the screen:
md: serializing resync, md0 has overlapping physical with md2!
md: serializing resync, md1 has overlapping physical with md2!
I've found this message in /usr/src/linux-2.2.14/drivers/block/md.c
My /etc/raidtab looks like the following:
raiddev /dev/md0
raid-level 5
nr-raid-disks 3
nr-spare-disks 0
persistent-superblock 1
chunk-size 32
parity-algorithm left-symmetric
device /dev/sdc1
raid-disk 0
device /dev/sdd1
raid-disk 1
device /dev/sde1
raid-disk 2
raiddev /dev/md1
raid-level 5
nr-raid-disks 3
nr-spare-disks 0
persistent-superblock 1
chunk-size 32
parity-algorithm left-symmetric
device /dev/sdc2
raid-disk 0
device /dev/sdd2
raid-disk 1
device /dev/sde2
raid-disk 2
raiddev /dev/md2
raid-level 5
nr-raid-disks 3
nr-spare-disks 0
persistent-superblock 1
chunk-size 32
parity-algorithm left-symmetric
device /dev/sdc3
raid-disk 0
device /dev/sdd3
raid-disk 1
device /dev/sde3
raid-disk 2
raiddev /dev/md3
raid-level 0
nr-raid-disks 3
persistent-superblock 1
chunk-size 32
device /dev/sdc5
raid-disk 0
device /dev/sdd5
raid-disk 1
device /dev/sde5
raid-disk 2
My understanding is that only /dev/md1 is able to have
overlapping physical sectors with /dev/md2.
Please, can someone explain the 2 messages?
Greetings
Hans-Guenter
PS: My system is running up to now without any problems...