Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thu, Jul 24, 2008 at 05:43:28PM +0800, Patrick Coleman wrote: > On Thu, Jul 24, 2008 at 4:34 PM, Lars Ellenberg > <lars.ellenberg at linbit.com> wrote: > > On Tue, Jul 22, 2008 at 12:01:48PM +0200, Lars Ellenberg wrote: > >> On Tue, Jul 22, 2008 at 05:03:23PM +0800, Patrick Coleman wrote: > >> > Hi, > >> > > >> > I've googled around for a while, and I can't find anything definitive > >> > for or against - what is the maximum volume size supported by DRBD? > >> > > >> > I'm running an 11TB DRBD 8.2.6 volume between two nodes, connected by > >> > 10GE. I've hit some odd issues (OOPSes, continually resyncing data) > >> > and I'd like to eliminate the volume size as a cause of the issue. > >> > >> > >> DRBD 8.0.x, 8.2.6: > >> 32bit kernel: > >> 4 TB hard limit per device > >> you can have several of them, but you probably run into some > >> other limit pretty fast. > >> 64bit kernel: > >> 4 TB "supported". > >> (unsupported theoretically) 16 TB hard limit per device, > > > > I just tried that myself out of curiosity. > > it works up to "only" 8 TB per device on 64bit kernel. > > anything bigger will oops sooner or later. > > > > again: maximum 8 TB per device -- or crash is imminent. > > > > therefore we will restrict drbd-8.2.7 (8.0.13) > > to refuse anything bigger than that. > > Cool. Just to clarify - the 8TB limit is global or per resource? yes. :) I think I was pretty clear in that post. where I wrote "per device" I meant "per device". where I wrote > you can have several of them, but you probably run into some > other limit pretty fast. I meant exactly that. > That is, can I safely have two 6TB devices (assuming I have sufficient > memory to handle the bitmaps)? you can try. it might work. -- : Lars Ellenberg http://www.linbit.com : : DRBD/HA support and consulting sales at linbit.com : : LINBIT Information Technologies GmbH Tel +43-1-8178292-0 : : Vivenotgasse 48, A-1120 Vienna/Europe Fax +43-1-8178292-82 : __ please don't Cc me, but send to list -- I'm subscribed