Neil Brown wrote:
On Saturday March 31, [EMAIL PROTECTED] wrote:
hi list!
in short:
I created a partitioned raid6 array with 2 missing drives. Now, I want to add a
device. It fails with:
flockmock ~ # mdadm -a /dev/md_d4 /dev/sdb2
mdadm: add new device failed for /dev/sdb2 as 4: Invalid argument
Thanks for the detailed problem report.
I think the cause of the error is that /dev/sdb2 is too small.
It needs to be at least 490030594 sectors. How big is it?
but the *device* size should be only ~250GB, so the array size is ~500GB, no?
flockmock ~ # mdadm --detail /dev/md_d4
/dev/md_d4:
Version : 00.90.03
Creation Time : Sat Mar 31 19:48:58 2007
Raid Level : raid6
Array Size : 490030464 (467.33 GiB 501.79 GB)
Used Dev Size : 245015232 (233.66 GiB 250.90 GB)
^^^^^^^^^^
these disks are all 250 GB harddisks, formatted in the same way -- but they are from different
vendors! The block sizes from the partitions vary a little bit (taken from /sbin/fdisk):
/dev/sda2: 245015347
/dev/sdc2: 245015347
/dev/sdb2: 244099642 -> different vendor
do you think that may be the cause?
thanks a lot,
florian
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