Hi Wesley,
On 01/19/2015 06:01 PM, Wesley W. Terpstra wrote:
I was in the middle of a reshape of this 4-disk raid5 when something
rebooted the computer. The system seems otherwise fine, and I suspect
someone in the house.
What is the correct next step? Should I try --run ? I would obviously
prefer not to lose the data on this array. I expect that the reshape
was NOT complete, so just recreating the array will probably corrupt
its contents.
Kernel version 3.17.8 and mdadm version 3.3.2.
There have been many bug fixes to mdadm since that kernel was retired.
You should temporarily boot a current liveCD (my favorite is
systemrescuecd) and do "mdadm -Afv /dev/mdX /dev/sdX ..."
Show us the output of that if it doesn't work (it should resume your
reshape).
When it is done reshaping/recovering, consider upgrading your kernel.
Thanks for any help. If I lose this array, I am going to face a lot of grief...
I shouldn't have to say this, but RAID is for availability, not for data
security. You still need a backup system for any important data.
Phil