software raid0

qrange · 10-12-2015, 12:41 PM

I've created several ext4 partitions and assembled them into /dev/md127p1 partition with xfs filesystem. But now, gparted displays a big '!' next to those ext4 partitions, is that normal?
Thanks.

smallpond · 10-12-2015, 02:07 PM

Typically you create empty partitions with parted, combine them into RAID with mdadm, then create a filesystem on the RAID - either ext4 or xfs, but not both. Why does it sound like you are not doing that?

qrange · 10-13-2015, 12:17 AM

because I didn't.
so, using gparted, I should have created 'cleared' instead of 'ext4'?
is there a way to fix it now, without reassembling the array?
I'm worried that kernel might fsck "ext4".
I have set 'raid' flag on them.
thanks.

jefro · 10-15-2015, 03:43 PM

Sometimes when gparted offers the ! it means that the system needs support for some part of the issue. Like xfs support of other. Pretty sure if you click on the ! it will tell you what you need.

qrange · 10-16-2015, 01:06 AM

Thanks.
It seems that gparted thinks those are still ext4 partitions, and not part of xfs raid0. So it complains about some errors in ext4. All other utils are fine, and array reads/writes nicely. Also, gparted does detect xfs raid partition.
BTW, my old raid was a simple /dev/md0 instead of /dev/md127p1 :/

I assumed mdadm would wipe those partitions ('headers') when creating the array.