Failed during rebuild (raid5)

[Andreas Boman <aboman@midgaard.us>]

I have (had?) a raid 5 array, with 5 disks (1.5TB/EA), smartd warned one 
was getting bad, so I replaced it with an identical disk.

I issued mdadm --manage --add /dev/md127 /dev/sdX

The array seemed to be rebuilding, was at around 15% when I went to bed.

This morning I came up to see the array degraded with two missing 
drives, another failed during the rebuild.

I powered the system down, and since I have the disk smartd flagged as 
bad and tried to just plug that in and power up hoping to see the array 
come back up -no such luck (not enough disks).

I powered the system down again, and now I'm trying to evaluate my best 
options to recover. Hoping to have some good advice in my inbox when I 
get back from the office. I'll be able to boot the thing up and get log 
info this afternoon.

Thanks!
Andreas

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