Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Mon, Dec 07, 2009 at 09:21:04AM -0800, Vadym Chepkov wrote:
> Hi,
>
> I am having problem to utilize drbd on a Linux PowerPC server
>
> These is my environment:
>
> # uname -a
> Linux ashlin01 2.6.18-164.el5 #1 SMP Tue Aug 18 15:58:09 EDT 2009 ppc64 ppc64 ppc64 GNU/Linux
>
> # fdisk -l /dev/sdc
>
> Disk /dev/sdc: 73.4 GB, 73407488000 bytes
> 128 heads, 32 sectors/track, 35003 cylinders
> Units = cylinders of 4096 * 512 = 2097152 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sdc1 1 35003 71686128 83 Linux
>
> # cat /etc/drbd.conf
> global {
> usage-count no;
> }
>
> common {
> protocol C;
> startup {
> wfc-timeout 15;
> }
> syncer {
> rate 4M;
> verify-alg sha1;
> }
> disk {
> on-io-error detach;
> }
> handlers {
> split-brain "/usr/lib/drbd/notify-split-brain.sh root";
> out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root";
> }
> }
>
> resource u00 {
> on ashlin01 {
> device /dev/drbd0;
> disk /dev/sdc1;
> address 10.10.10.10:7788;
> flexible-meta-disk internal;
> }
> on ashlin02 {
> device /dev/drbd0;
> disk /dev/sdc1;
> address 10.10.10.11:7788;
> flexible-meta-disk internal;
> }
> }
>
> # cat /proc/drbd
> version: 8.3.5 (api:88/proto:86-91)
> GIT-hash: ded8cdf09b0efa1460e8ce7a72327c60ff2210fb build by vchepkov at ashlin02, 2009-12-05 19:33:37
> 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r----
> ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0
>
>
> Now, when I try to create a fs on the device I get this:
> # mkfs -j -T small /dev/drbd/by-res/u00
> mke2fs 1.39 (29-May-2006)
> Warning: could not erase sector 2: Attempt to write block from filesystem resulted in short write
> Filesystem label=
> OS type: Linux
> Block size=1024 (log=0)
> Fragment size=1024 (log=0)
> 17922048 inodes, 71683904 blocks
> 3584195 blocks (5.00%) reserved for the super user
> First data block=1
> Maximum filesystem blocks=138936320
> 8751 block groups
> 8192 blocks per group, 8192 fragments per group
> 2048 inodes per group
> Superblock backups stored on blocks:
> 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409, 663553,
> 1024001, 1990657, 2809857, 5120001, 5971969, 17915905, 19668993,
> 25600001, 53747713
>
> Warning: could not read block 0: Attempt to read block from filesystem resulted in short read
> Warning: could not erase sector 0: Attempt to write block from filesystem resulted in short write
> mkfs.ext2: Attempt to write block from filesystem resulted in short write while zeroing block 71683840 at end of filesystem
> Writing inode tables: 0/8751
> Could not write 8 blocks in inode table starting at 534: Attempt to write block from filesystem resulted in short write
>
> And on the server console I get these errors:
>
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=0)
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=128)
> Buffer I/O error on device drbd0, logical block 1
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=0)
> Buffer I/O error on device drbd0, logical block 0
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=0)
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=143367680)
> block drbd0: bio would need to, but cannot, be split: (vcnt=1,idx=0,size=65536,sector=1024)
hm. ugly.
no one should not submit 64k bios to DRBD, as we unfortunately have a
stupid badly chosen and someday to be fixed limit at 32k per bio.
and we _do_ announce this limit.
> I am lost. drbd 8.2.6 was working on this server, by the way, but I
> can't make 8.3 to work, no matter what. Could anybody help, please?
interessting.
may I have the kernel log from modprobe to first attach of drbd?
specifically I'm looking for "drbd0: max_segment_size",
which may be adjusted while attaching,
as well as during connection handshake.
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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