[sheepdog-users] [sheepdog] qustions about sheepdog presentation
v.tolstov at selfip.ru
Wed Oct 22 12:54:27 CEST 2014
2014-10-22 13:15 GMT+04:00 Valerio Pachera <sirio81 at gmail.com>:
> qemu sends a read request;
> sheep request from the other nodes the required object;
> it stores a copy of that object in the object cache (ssd);
> the next time qemu is sending a read request for the same object, it
> will read it directly from it's ssd.
> Qemu sends a write request;
> sheep write a new object in the object cache (ssd) instead of writing
> that on other nodes;
> after a certain amount of time, it's going to replicate this object on
> the other nodes ad remove it from the cache.
> It's evident that if the node dies before replicating the object in
> the cache, you loose data.
> Object cache isn't well tested yet, so I suggest not to use it in
> production but please test it and report any issue you may find.
Thanks! Does it possible to control timeout to replicate data from cache?
e-mail: v.tolstov at selfip.ru
jabber: vase at selfip.ru
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