Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On 12/21/2012 12:13 AM, Anthony G. wrote:
> Hi,
>
> There's so much information relating to my current configuration, that
> I'm not sure what I should post here. Let me start by saying that I had
> two Ubuntu 10.04 hosts configured in a DRBD relationship: sf02-nfs1
> (primary) and sf0-nfs2 (secondary). -nfs1 suffered a major filesystem
> fault. I had to make -nfs2 primary and rebuild -nfs1. I want to
> eventually have all of my machines on 12.04, so I took this as an
> opportunity to set -nfs1 on that OS.
>
> Here is a copy of my main configuration file (/etc/drbd.d/nfs.res):
>
> resource nfs {
> on sf02-nfs2 {
> device /dev/drbd0;
> disk /dev/ubuntu/drbd-nfs;
> address 10.0.6.2:7789;
> meta-disk internal;
> }
> on sf02-nfs1 {
> device /dev/drbd0;
> disk /dev/ubuntuvg/drbd-nfs;
> address 10.0.6.1:7789;
> meta-disk internal;
> }
> }
>
>
> I'm trying to re-introduce -nfs1 into the DRBD relationship and am
> having trouble. I have:
>
>
> 1.) created the resource "nfs" on -nfs1 ('drbdadm create-md nfs')
>
> 2.) run 'drbdadm primary nfs' on -nfs2 and 'drbdadm secondary nfs' on -nfs1.
>
> 3.) run drbdadm -- --overwrite-data-of-peer primary all' from -nfs2.
>
>
> But /var/log/kern.log shows:
>
> =====
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.843938] block drbd0:
> Handshake successful: Agreed network protocol version 91
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.843949] block drbd0: conn(
> WFConnection -> WFReportParams )
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844171] block drbd0: Starting
> asender thread (from drbd0_receiver [2452])
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844539] block drbd0:
> data-integrity-alg: <not-used>
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844610] block drbd0: *The
> peer's disk size is too small!*
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844617] block drbd0: conn(
> WFReportParams -> Disconnecting )
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844626] block drbd0: error
> receiving ReportSizes, l: 32!
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844680] block drbd0: asender
> terminated
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844691] block drbd0:
> Terminating asender thread
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844746] block drbd0:
> Connection closed
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844755] block drbd0: conn(
> Disconnecting -> StandAlone )
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844791] block drbd0: receiver
> terminated
>
> Dec 19 19:55:47 sf02-nfs2 kernel: [9284165.844794] block drbd0:
> Terminating receiver thread
>
> =====
>
>
> So, it seems that a difference in the size of drbd0 on the respective
> machines is the source of my trouble. 'cat /proc/partitions' (output
> pasted at the end of this message) on each machine tells me that -nfs2's
> partition is around 348148 blocks larger than -nfs1's. -nfs2 contains
> my company's Production data, so I do not, of course, want to do
> anything destructive there. I can, however, certainly recreate the
> resource on -nfs1.
>
>
> Does anyone out there know what steps I need to take to make the
> partition sizes match? Of course, I'm working under the belief that the
> "peer's disk size is too small" message points up the source of my
> trouble. Let me know, of course, if I need to post more information on
> my setup.
You are using LVM, so simply resize the lv below DRBD on nfs1 to be at
least of the same size or bigger ala:
lvresize -L+200M ubuntuvg/drbd-nfs
... then recreate meta-data on that resized lv on nfs1 and on nfs1 do a:
drbdadm up nfs
Regards,
Andreas
--
Need help with DRBD?
http://www.hastexo.com/now
>
>
> Thanks,
>
>
> -Anthony
>
>
>
>
>
>
> ==========
>
> root at sf02-nfs1:/dev/ubuntuvg# cat /proc/partitions
>
> major minor #blocks name
>
>
> 8 0 1952448512 sda
>
> 8 1 512000 sda1
>
> 8 2 1 sda2
>
> 8 5 1886388224sda5
>
> 252 0 20971520 dm-0
>
> 252 1 5242880 dm-1
>
> 252 2 1706033152 dm-2
>
> 147 0 1705981052 drbd0
>
>
>
> root at sf02-nfs2:/etc/drbd.d# cat /proc/partitions
>
> major minor #blocks name
>
>
> 8 0 1952448512 sda
>
> 8 1 248832 sda1
>
> 8 2 1 sda2
>
> 8 5 1952196608 sda5
>
> 252 0 209715200 dm-0ubuntuvg-root
>
> 252 1 36098048 dm-1ubuntuvg-swap
>
> 252 2 1706381312 dm-2ubuntuvg-drbd--nfs
>
> 147 0 1706329200 drbd0
>
>
>
>
> _______________________________________________
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> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user
>
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