Thank you, Andreas. I feel a bit better now.
bob
On 1/30/2015 11:25 AM, Dilger, Andreas wrote:
On 2015/01/29, 12:34 PM, "Bob Ball" <[email protected]> wrote:
This is Lustre 2.1.6.
I did a dumb thing. I reformatted a drained OST BEFORE I saved off
appropriate data to re-establish it at its old index. I don't know what
I was thinking? The files that I would normally restore are,
LAST_ID
last_rcvd
mountdata
umt3-OST0020
I know how to recreate the correct LAST_ID. And, as this happened over
a year ago on this same OST, I have old copies still of each of the
others. I know that "mountdata" is created when I created the lustre
file system, so I would guess I can just continue to use that file.
My question, can I simply re-use these other, old file copies when I am
ready to once again put a Lustre file system on this volume?
The mountdata file should be the same. The last_rcvd file will be
recreated during mount if it is missing, though the old one could also be
used. The umt3-OST0020 config file would be recreated with a --writeconf,
but it may also be created automatically during mount if missing (it is an
OST-local copy of the MGS file of the same name so the OST can mount even
if the MGS is offline).
Cheers, Andreas
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