Hi Phil
Whoa! Don't do that. Upgrade to CentOS 7, or go back to the other
machine. You didn't mention switching machines, btw. That would
explain the different drive names vs. roles. You need to document the
device names vs. drive serial numbers on the current setup before
moving
or upgrading. Then adjust the names worked out above based on the
serial numbers in the new environment.
oh I'm sorry, I should have make more clear, that I went back to the old
system after the raid reshape failed. All outputs I posted were from the
same (old one) machine.
Now I booted the latest centos 7 rescue, but fsck still tells the same:
/dev/md0 has unsupported feature(s): FEATURE_C16 FEATURE_C17 FEATURE_C18
FEATURE_C19 FEATURE_C21 FEATURE_C22 FEATURE_C23 FEATURE_C25 FEATURE_C27
FEATURE_C28 FEATURE_I29 FEATURE_R29
e2fsck: Get a newer version of e2fsck!
I created the array with this command:
mdadm --create --assume-clean -l5 -n4 --chunk 64 --data-offset 1024
--metadata 1.2 /dev/md0 ......
This both combinations
The devices names are now different, but I adjusted the names by serial
numbers as you told.
Also mdadm --examine on on of the drives tells "Data offset: 2048
Sectors" when mdadm --create --data-offset 1024 is used. Is this normal?
It's confusing me (using --data-offset 2048 on creation gives "Data
offset: 2048 Sectors").
Thanks,
Mathias
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