On 09/19/2016 12:32 PM, Anthony DeRobertis wrote:
(please cc me, I'm not subscribed.)
mdadm 3.4 can not manage to add a spare to my array, it fails like:
# mdadm -a /dev/md/pv0 /dev/sdc3
mdadm: add new device failed for /dev/sdc3 as 8: Invalid argument
and the kernel logs:
md: sdc3 does not have a valid v1.0 superblock, not importing!
md: md_import_device returned -22
This worked in 3.3.4. I performed two git bisects and found that:
a) it was broken by 95a05b37e8eb2bc0803b1a0298fce6adc60eff16
b) it is sort-of fixed by 81306e021ebdcc4baef866da82d25c3f0a415d2d
(which AFAIK isn't yet released)
I say sort of fixed in that it adds it to the array, but spits out some
worrying errors (and I have no idea if it'd actually work, e.g., if it'd
# ./mdadm -a /dev/md/pv0 /dev/sdc3
mdadm: Warning: cluster md only works with superblock 1.2
mdadm: Failed to write metadata to /dev/sdc3
Thanks for report, could you try the latest tree
I guess 45a87c2f31335a759190dff663a881bc78ca5443 should resolve it , and
I can add a spare disk
to native raid (internal bitmap) with different metadatas (0.9, 1.0 to 1.2).
Pls let me know the result, I will look into it if the issue still exists.