[Sheepdog] Q: stripping / robustness / kvm resume+suspend / ..
Daniel.Schwager at dtnet.de
Fri Dec 4 20:48:50 CET 2009
Hi MORITA Kazutaka,
first of all - I would like to thank you for this great
project - I like your approach (independent of the java dependency ;-)
We think about using sheepdog as a storage base replacement (instead
for our platform opensource-online.org.
Before (practicaly) starting evaluation, I would like to know some
1. is it possible to use sheepdog as storage for resuming/suspending
KVM machines ? Normaly, kvm invokes a command like dd or cat to
store/restore the RAM to/from disk ... this may will not work
with sheepdog in the current version, or ?
2. to be sure - the KVM machines could run on a sheepdog server member,
but can also run on not-sheepdog-server machine connecting
to the sheepdog cluster via IP and multicast.
3. Can i change the "stipping" (means count of servers "hosting" the
same data blocks)
after I created the cluster ? Sure - I can add some servers to
HDD-storage - but can I change the stripping from e.g. 3 to 5 to
4. KVM-server - can I configure the kvm-server (hosting the kvm-vm's)
to using ethernet trunking (2 x 1GBit) - or does this cause problems
with the multicast sheepdog communication to the kvm-server ?
- could it be used for productive enviroment (what's your feeling ;-)
- do you have some running productive enviroment based on sheepdog
(beside of your test bed)
best regards from germany
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