Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, Feb 28, 2007 at 12:53:44AM +0100, Ragnar Kj?rstad wrote: > The changelog entry for version 0.2 says that it does not work on > loopback devices, but I see no further mention of this in the manual or > in the FAQ. > > Is it still the case, or has it been fixed? > On Mon, Feb 05, 2007 at 08:08:18PM +0100, Lars Ellenberg wrote: > > drbd on top of a loop device is expected to deadlock sooner or later > due to resource starvation in the block io path. > > you'd hit this sooner with drbd 0.6, or with drbd 0.7 and kernel 2.4. > you can probably still hit this with the most recent drbd and kernel. > > if you don't have much io load, and you do have much free memory, you > probably could even run this for a long time and never have problems. > but eventually it will deadlock. > > again: > > it _may_ work (though I'm not too sure about that), > if the loop device is block-device-backed. > > it _will_ deadlock if the loop device is file-backed, > due to block io re-entering the file-io path. > > -- > : Lars Ellenberg Tel +43-1-8178292-0 : > : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : > : Vivenotgasse 48, A-1120 Vienna/Europe http://www.linbit.com : I got this from my mailbox, but you will can archives of the ml on the web. Regards, Paddy