[chord] Can't insert folder - DHASH_ERR

[Alex Buie]

I have two physical nodes currently, and I've tried a combination of
8, 16, and 32 vnodes on each of the two pnodes. (Originally all writes
[ie, including data blocks] were failing, but I realized that it was
because there weren't enough successors to successfully add any more
keys)

I've tried changing the minimum sharding redundancy parameters with a
custom dhash.conf as was suggested in a 2008 post to the mailing list.

I was just playing around with CFS, trying to see how it works, and
its feasibility as sort of a "distributed backup" system with some of
my friends who have their own servers in multiple locations. We get
less storage, but it's georedundant, in case someone accidentally
lights one of our Datacenters on fire or something. :)

Thanks for your help!

Alex
--
Alex Buie
Network Coordinator / Server Engineer
KWD Services, Inc
Media and Hosting Solutions
+1(703)445-3391
+1(480)253-9640
+1(703)919-8090
abuie at kwdservices.com
ज़रा



On Mon, Jan 23, 2012 at 3:01 PM, Emil Sit <sit at mit.edu> wrote:
> On Mon, Jan 23, 2012 at 2:03 AM, Alex Buie <abuie at kwdservices.com> wrote:
>> I'm trying to set up CFS, and I keep running into an issue where I
>> can't insert a filesystem. All of the data blocks are successfully
>> inserted, but then the final one causes a DHASH_ERR state.
>
> How many nodes (and virtual nodes) are you running with?
>
> Hrm. It's possible, I suppose, that the public key block writes are
> completely broken.  I haven't tried to do that in probably more than 5
> years.
>
> What are you trying to do with CFS?
>
> --
> Emil Sit / http://pdos.csail.mit.edu/chord/