[DRBD-user] BAD! .... messages

Lars Ellenberg lars.ellenberg at linbit.com
Fri Nov 18 15:05:48 CET 2016

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


On Thu, Nov 17, 2016 at 10:53:43PM +1300, Jan Bakuwel wrote:
> Hi,
> 
> I found the following in the archives
> (http://lists.linbit.com/pipermail/drbd-user/2012-July/018751.html):
> 
> QUOTE
> 
> >/Now I wonder: What does drbd0 want to tell me with those "BAD! ..."
> messages? /
> It's just some reference counter that should not have gone negative,
> but did, because we forgot to update/reinitialize it at some stage.
> 
> Depending on your exact DRBD version, I could tell you various things
> about this.  But if you run 8.3 git it is supposed to be fixed, finally...
> 
> >/It seems to have completed the synchronization successfully. Also, no
> "read errors" where />/reported in on either host. />//>/Should I be concerned about the data integrity, now? /
> Nope. All good.
> 
> UNQUOTE
> 
> root at ns8p2:~# dpkg --list | grep drbd
> 
> ii  drbd-utils                     8.9.2~rc1-2+deb8u1           amd64        RAID 1 over TCP/IP for Linux (user utilities)
> 
> root at ns8p2:~# 
> 
> 
> I'm running 8.9 ... is this still something I can safely ignore (and not fixed)?

No, you are NOT running drbd 8.9.  That's the version of the userland tools.

You want to check (and upgrade) your kernel module.
Check: modinfo drbd; head /proc/drbd

> [25995.392321] block drbd4: Began resync as SyncTarget (will sync 976732736 KB [244183184 bits set]).
> [30600.132064] block drbd4: BAD! sector=973405984s enr=29705 rs_left=-4 rs_failed=0 count=32 cstate=SyncTarget
> [30681.477947] block drbd4: BAD! sector=973471608s enr=29707 rs_left=-15 rs_failed=0 count=32 cstate=SyncTarget
> [30708.359025] block drbd4: BAD! sector=973504448s enr=29708 rs_left=-24 rs_failed=0 count=32 cstate=SyncTarget
> [30728.251051] block drbd4: BAD! sector=973537240s enr=29709 rs_left=-27 rs_failed=0 count=32 cstate=SyncTarget
> [30763.512730] block drbd4: BAD! sector=973569888s enr=29710 rs_left=-12 rs_failed=0 count=32 cstate=SyncTarget
> [30773.590935] block drbd4: BAD! sector=973602656s enr=29711 rs_left=-12 rs_failed=0 count=32 cstate=SyncTarget
...


-- 
: Lars Ellenberg
: LINBIT | Keeping the Digital World Running
: DRBD -- Heartbeat -- Corosync -- Pacemaker

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