[Lustre-devel] Wide striping

Oleg Drokin green at whamcloud.com
Fri Oct 7 03:29:12 PDT 2011


On Oct 5, 2011, at 7:56 PM, David Dillow wrote:
>> Another problems I see here are similar to create on write.
>> Say if we delete a file, do we purge this mapping table too? and then
>> when stale client comes we recreate an orphan object?
>> Or we don't purge the table and let it grow indefinitely using more
>> and more space and eventually slowing down lookups?
>> Or do we purge really old objects from it only, what triggers it, what
>> failure scenarios are there for this process?
>> How do we recover from disasters that happened to this table?
> Wouldn't the online lfsck work being done for OpenSFS catch and correct
> these types of problems?

It probably would, once the online lfsck is implemented.

Oleg Drokin
Senior Software Engineer
Whamcloud, Inc.

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