[Drbd-dev] [bug] drbd 9: Receiver error

[Lars Ellenberg]

On Fri, Feb 20, 2015 at 03:12:36AM -0600, Goldwyn Rodrigues wrote:
> Hi Philipp,
> 
> 
> On 02/20/2015 01:41 AM, Philipp Marek wrote:
> >Hi Goldwyn,
> >
> >>I compiled drbd-9.0 against Opensuse Tumbleweed and installed it [1].
> >>I applied Linux kernel commit f730c848affc05fb7262574b06e0cd7e1fa96096 to
> >>get it to compile against the latest (factory) kernels and should be the
> >>same for the tumbleweed kernel (3.18.3 based) I am using to test.
> >>
> >>I am getting the following receiver errors in the kernel log when I try to
> >>start the drbd service:
> >...
> >>Please let me know if you need any more information to debug this or if I am
> >>doing something wrong.
> >how many nodes did you connect, which DRBD versions were they running?
> 
> Two nodes, traditional way with one local device and no other
> clustering software.
> 
> >Can you show the configuration, and some more log lines - from all nodes,
> >and starting quite a bit earlier?
> 
> Here is the one which errs:
> 
> [  175.644532] drbd: initialized. Version: 9.0.0rc1 (api:1/proto:86-110)
> [  175.644535] drbd: GIT-hash:
> 9804ed9b1eedab65cb137380f8066518a9521c12 build by abuild at cloud109,
> 2015-02-20 08:39:07
> [  175.644536] drbd: registered as block device major 147
> [  175.657174] drbd r0: Starting worker thread (from drbdsetup [1162])
> [  175.797012]  sda: unknown partition table
> [  175.798367] block drbd0: disk( Diskless -> Attaching )
> [  175.798404] block drbd0: Maximum number of peer devices = 1
> [  175.798634] drbd r0: Method to ensure write ordering: flush
> [  175.798644] block drbd0: drbd_bm_resize called with capacity == 62912568
> [  175.799879] block drbd0: resync bitmap: bits=7864071 words=122877
> pages=240


> [  176.429715] block drbd0: tumbleweed1: bitmap overflow (e:8388342) while decoding bm RLE packet
> [  176.429739] drbd r0 tumbleweed1: error receiving P_COMPRESSED_BITMAP, e: -5 l: 7!


If you can reproduce this (with RLE enabled),
can you please down drbd on both nodes,
then "dump-md"?

I'm interested in how exactly your bitmaps look like,
so I could "unit test" the bitmap compression/decompression for it.

Thanks,
	Lars

-- 
: Lars Ellenberg
: http://www.LINBIT.com | Your Way to High Availability
: DRBD, Linux-HA  and  Pacemaker support and consulting

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