[sheepdog] [PATCH] sheep: handle recovery request in check_request_in_recovery()

[Liu Yuan]

On 06/02/2012 11:24 PM, Christoph Hellwig wrote:

> From looking at a bit more instrumentation the problem is the following:
> 
>  - the cluster only has nr_copies = 2
>  - one zone already went down, leaving only one copy of the object
>  - the sheep that has the copy stays is in RW_INIT state for a while
>    so we get a SD_RES_OBJ_RECOVERING completion


int is_recoverying_oid(uint64_t oid)
{
        .....
        if (sd_store->exist(oid)) {
                dprintf("the object %" PRIx64 " is already recoverd\n",
oid);
                return 0;
        }

        if (rw->state == RW_INIT)
                return 1;
        .......
}

So if the object does exist on the targeted node, we
is_recoverying_oid() will return false and we don't get this
SD_RES_OBJ_RECOVERING.

Thanks,
Yuan