On Sun, 8 Dec 2013 17:08:19 -0800 Christopher Hoover [off-list ref]
wrote:

ch@snaggle:~$ sudo mdadm --assemble --verbose  --force /dev/md0  /dev/sd[defg]1
mdadm: looking for devices for /dev/md0
mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 4.
mdadm: /dev/sde1 is identified as a member of /dev/md0, slot 1.
mdadm: /dev/sdf1 is identified as a member of /dev/md0, slot 2.
mdadm: /dev/sdg1 is identified as a member of /dev/md0, slot 5.
mdadm: ignoring /dev/sde1 as it reports /dev/sdd1 as failed
mdadm: ignoring /dev/sdf1 as it reports /dev/sdd1 as failed
mdadm: no uptodate device for slot 0 of /dev/md0
mdadm: no uptodate device for slot 1 of /dev/md0
mdadm: no uptodate device for slot 2 of /dev/md0
mdadm: no uptodate device for slot 3 of /dev/md0
mdadm: added /dev/sdg1 to /dev/md0 as 5
mdadm: added /dev/sdd1 to /dev/md0 as 4
mdadm: /dev/md0 assembled from 0 drives and 2 spares - not enough to
start the array.
ch@snaggle:~$

Thanks.

I recognise this bug now.  You are running mdadm-3.2.something - correct?
You need 3.3.
Just grab the latest:

 cd /tmp;git clone git://neil.brown.name/mdadm ; cd mdadm ; make ; ./mdadm  -Avf /dev/md0 /dev/sd[defg]1

NeilBrown

On Sun, Dec 8, 2013 at 5:02 PM, NeilBrown [off-list ref] wrote:

quoted

On Sun, 8 Dec 2013 16:32:22 -0800 Christopher Hoover [off-list ref]
wrote:

quoted

yes, thanks, typo there.  that was done hastily for the e-mail.

i had tried the right thing previously and here it is again.  still no luck:


ch@snaggle:~$ sudo mdadm -E /dev/sd[defg]1 | egrep 'Events|^/dev/sd'
/dev/sdd1:
         Events : 286024
/dev/sde1:
         Events : 286011
/dev/sdf1:
         Events : 286024
/dev/sdg1:
         Events : 286024
ch@snaggle:~$ sudo mdadm --assemble --force /dev/md0  /dev/sd[dfg]1
mdadm: ignoring /dev/sdf1 as it reports /dev/sdd1 as failed
mdadm: /dev/md0 assembled from 0 drives and 2 spares - not enough to
start the array.
ch@snaggle:~$

Please try listing *all* of the devices, and add "-v" for extra output.

NeilBrown