[DRBD-user] OCFS2 over DRBDv8

Kilian CAVALOTTI kilian.cavalotti at lip6.fr
Fri Aug 18 15:44:54 CEST 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Friday 18 August 2006 15:04, Lars Ellenberg wrote:
> we discovered an issue in the way we currently stack the devices limits
> (max_segment_size, merge_bvec_fn), we not always report the true limits
> of the underlying device correctly.
> we currently are looking into that.
>
> what are your lower level devices? (sorry if thats somewhere in your
> mails, I just short-circuited on the "Error adding page").

No probs. :)

/dev/drbd0 is defined as:
  on moby {
    device    /dev/drbd0;
    disk      /dev/md2;
    address   10.0.0.2:7788;
    flexible-meta-disk internal;
  }

and /dev/md2 is a RAID0 MD device, 2.5TB in size, assembled from two 
hardware RAID5 volumes created on two ICP Vortex SATA-RAID cards [1] 
(/dev/sda1 and /dev/sda2)

moby:~# mdadm -D /dev/md2
/dev/md2:
        Version : 00.90.03
  Creation Time : Mon May 15 10:53:38 2006
     Raid Level : raid0
     Array Size : 2637013248 (2514.85 GiB 2700.30 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2
    Persistence : Superblock is persistent

    Update Time : Mon May 15 10:53:38 2006
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 64K

           UUID : 5e5ff5d1:fbcae14a:ac747fac:987c5d3a
         Events : 0.2

    Number   Major   Minor   RaidDevice State
       0       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1


[1] http://www.icp-vortex.com/english/product/pci/rz_sata_8/8586rz_e.htm
-- 
Kilian CAVALOTTI                      Administrateur réseaux et systèmes
UPMC / CNRS - LIP6 (C870)
8, rue du Capitaine Scott                          Tel. : 01 44 27 88 54
75015 Paris - France                               Fax. : 01 44 27 70 00



More information about the drbd-user mailing list