Re: Problems with Linux RAID in kernel 2.6

On Thursday March 10, jrojomartinez@mi.madritel.es wrote:

Hi,

  I have many problems with RAID in kernel 2.6.10.

..

  And dmesg says:

md: raidstart(pid 2944) used deprecated START_ARRAY ioctl. This will not	<-- !!!
be supported beyond 2.6								<-- !!!

Take the hint.  Don't use 'raidstart'.  It seems to work, but it will
fail you when it really counts.  In fact, I think it is failing for
you now.

Use mdadm to assemble your arrays.

  And with mdadm also fails:

centralmad:~# mdadm -R /dev/md2 
mdadm: failed to run array /dev/md2: Invalid argument

You are using mdadm wrongly.  
You want something like:
  mdadm --assemble /dev/md2  /dev/sdb2 /dev/sdc2

centralmad:~# cat /proc/mdstat 
Personalities : [raid1] 
unused devices: <none>

  Moreover, dmesg says the md driver fails:

md: bug in file drivers/md/md.c, line 1514

This is (a rather non-helpful) way of saying that you tried to start
an array which contained no devices.

NeilBrown