Re: Two questions

["Sławomir Skowron" <szibis@gmail.com>]

Dnia 27 lip 2011 o godz. 17:52 Sage Weil <sage@newdream.net> napisał(a):

> On Wed, 27 Jul 2011, S?awomir Skowron wrote:
>> Hello. I have some questions.
>>
>> 1. Is there any chance to change default 4MB object size to for
>> example 1MB or less ??
>
> Yeah.  You can use the cephfs to set the default layout on the root
> directory, which will apply to any new files.  See 'man cephfs'.

Ok. Thanks.

>> 2. I have create cluster of two mons, and 32 osd (1TB each) on two
>> machines. At this radosgw with apache2 for test. When i putting data
>> from s3 client to rados, everything is ok, but when one of osd is
>> going down all s3 clients going to be freeze for some seconds, before
>> ceph sign this osd as down, and then everything is starting working
>> again wit degraded osd. How can i tune this marking as a down for ms
>> or 0 :) and not for seconds freeze ??
>
> The 'osd heartbeat grace' defualt is 20.  Stick something like
>
>    osd heartbeat grace = 5
>
> in the [osd] section of your ceph.conf

Thanks, i will check this in work.

> sage
>
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