[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Gluster-devel] How to make out-of-sync files visible in replication
Re: [Gluster-devel] How to make out-of-sync files visible in replication setup
Sat, 27 Mar 2010 13:54:07 +0000
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:126.96.36.199) Gecko/20100227 Lightning/1.0b1 Thunderbird/3.0.3
On 25/03/2010 18:54, Ian Rogers wrote:
Some random thoughts:
1. A client will be making a note like this when it's trying to write
a file and spots that one of the replica sub-volumes is down
1.1. so the client shouldn't try to store this info in the sub-volumes
as, by definition, they're in a degraded state.
1.2. the info should include which sub-volumes were up/down to help
the clients make an informed decision for self-heal
So presumably you can figure out which volumes were down because they
wouldn't have the links shown on them?
The logic would seem that you do an "ls" of the "degraded" directory and
this causes all the links to be created across all volumes (if they
weren't already). You can then delete all the links if you are sure
that all volumes are up.
Interestingly if one volume went down as you tried to delete the excess
links then you would presumably have extra links once that volume came
back up again - this seems safe in that at worst you scan some extra files