Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
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: > 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 184.108.40.206-2 >> 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 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20080519/833bee36/attachment.htm>