Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
I tried that too, with identical results. anything over 11M and it loses connectivity. On Mon, May 19, 2008 at 1:14 PM, David Coulson <david at davidcoulson.net> wrote: > It is my understanding that with GigE, you don't need a crossover cable. > When I do direct server-server connections, I always use a straight through > with Gigabit ports. > > My wife setup DRBD at her office the other week using a cross over cable > and had nothing but problems. Changed it to straight through, and it worked > fine. > > Not saying that is the problem - Just something that potentially can be > changed. > > David > > Stefan Löfgren wrote: > > This is also something similar to what I saw... > Using crossover cable. Trying to sync the resources caused a lot of > disconnects, > and it also got locked up in bitmap-transfer (what ever the name of the > state is)... > Also online verify failed after just a few %. So, switched to using 100Mbit > + switch I was able to > verify the complete disk. But after updating to 8.2.6rc1 made it better... > (but still not perfect as stated in another thread).. > > /Stefan > > > *---------- Original Message -----------* > From: "Dan Gahlinger" <dgahling at gmail.com> <dgahling at gmail.com> > To: "Tomasz Chmielewski" <mangoo at wpkg.org> <mangoo at wpkg.org> > Cc: drbd-user at linbit.com > Sent: Mon, 19 May 2008 12:57:42 -0400 > Subject: Re: [DRBD-user] DRBD slow sync > > > speaking of slow sync, I have a similar issue. > > using a cross-over cable (2ft length) on gig interfaces, I can't set rate > to anything over 11M > > if I do, the units disconnect and go primary/unknown unknown/secondary. > no matter what I do. > > yet I can transfer data and files across the dedicated link at really > high speed. > > it's kind of crazy that a gig link interface can only do 11M in drbd. > > so I think it's related to this issue somehow. > > > > On Mon, May 19, 2008 at 10:19 AM, Tomasz Chmielewski <mangoo at wpkg.org> > wrote: > > >> >> [WINDOWS-1252?]Anže Vidmar schrieb: >> > >> > >>> >>> hello list! >>> > >>> > I've setup a fresh install of DRBD + OCFS2 on the machine with the >>> following properties: >>> > >>> > OS: (Bluewhite64 12) Linux 2.6.23.9-2 >>> > ARCH: x86_64 >>> > CPU:8 x Intel(R) Xeon(R) CPU E5430 @ 2.66GHz >>> > eth0 = 1Gb >>> > DRBD version = 8.2.5 >>> > >>> > The problem is that DRBD sync in very slooooow, around 315k/s. There is >>> no way I can speed-up the process. The storage with OCFS2 is 3.2T large and >>> it's build on hardware RAID5 + 1 spare. >>> > >>> > Here is what I've already did: >>> > >>> > - changed the UTP cable (cross and regular) >>> > - tried with kernel that has DRBD included in, and kernel + DRBD module >>> >>> > - I've test the data transfer directly on eth1 - the transfer was >>> normal aroung 75M/s, so the link between the secondary (eth1) NIC's is ok >>> > - played with ethtool - I've setup the card to 100/1000M, half/full >>> duplex... No change >>> > - tweaking drbd.conf "net" parameters. No speed change at all. >>> > >>> > Anyone have any idea what might be causing the slow sync? Is this >>> normal for the 1st time sync? >>> > >> >> >> > According to http://www.drbd.org/users-guide/re-drbdconf.html the >> default rate is just 250 KB/s: >> > >> > rate rate >> > >> > To ensure a smooth operation of the application on top of DRBD, it is >> possible to limit the bandwidth which may be used by background >> synchronizations. The default is 250 KB/sec, the default unit is KB/sec. >> Optional suffixes K, M, G are allowed. >> > >> > >> > -- >> > Tomasz Chmielewski >> > http://wpkg.org >> > >> > _______________________________________________ >> > drbd-user mailing list >> > drbd-user at lists.linbit.com >> > http://lists.linbit.com/mailman/listinfo/drbd-user >> > > > > *------- End of Original Message -------* > > ------------------------------ > > _______________________________________________ > drbd-user mailing listdrbd-user at lists.linbit.comhttp://lists.linbit.com/mailman/listinfo/drbd-user > > > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20080519/0205d61a/attachment.htm>