On Thu, Nov 1, 2012 at 10:33 PM, Gandalf Corvotempesta
wrote:
> 2012/11/1 Mark Nelson :
>> It will do that for a while, based on how you've tweaked the flush intervals
>> and various journal settings to determine how much data ceph will allow to
>> hang out in the journal while still accepting new
On 11/01/2012 04:18 PM, Gandalf Corvotempesta wrote:
2012/10/31 Stefan Kleijkers :
As far as I know, this is correct. You get a ACK (on the write) back after
it landed on ALL three journals (or/and osds in case of BTRFS in parallel
mode). So If you lose one node, you still have it in two more no
Hi,
Personally I won't take the risk to loose transactions. If a client
writes into a journal, assuming it's the first write and if the server
crashs for whatever reason, you have high risk of un-consistent data.
Because you just lost what was in the journal.
Tmpfs is the cheapest solution for ach
Hello,
On 10/31/2012 10:58 PM, Gandalf Corvotempesta wrote:
2012/10/31 Tren Blackburn :
Unless you're using btrfs which writes to the journal and osd fs
concurrently, if you lose the journal device (such as due to a
reboot), you've lost the osd device, requiring it to be remade and
re-added.
I
On Wed, 31 Oct 2012, Tren Blackburn wrote:
> On Wed, Oct 31, 2012 at 2:18 PM, Gandalf Corvotempesta
> wrote:
> > In a multi replica cluster (for example, replica = 3) is safe to set
> > journal on a tmpfs?
> > As fa as I understood with journal enabled all writes are wrote on
> > journal and then
Hello,
On 10/31/2012 10:24 PM, Tren Blackburn wrote:
On Wed, Oct 31, 2012 at 2:18 PM, Gandalf Corvotempesta
wrote:
In a multi replica cluster (for example, replica = 3) is safe to set
journal on a tmpfs?
As fa as I understood with journal enabled all writes are wrote on
journal and then to dis
On Wed, Oct 31, 2012 at 2:18 PM, Gandalf Corvotempesta
wrote:
> In a multi replica cluster (for example, replica = 3) is safe to set
> journal on a tmpfs?
> As fa as I understood with journal enabled all writes are wrote on
> journal and then to disk in a second time.
> If node hangs when datas ar
