[DRBD-user] Power off caused "Unknown" status.

Martin Gombac martin at isg.si
Thu Apr 9 12:39:56 CEST 2009

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

You probably need to connect those two. I think it can be down with  
somth like drbdadm connect or drbdadm up.
I can be wrong thou.

On 9, Apr2009, at 12:24 PM, guohuai li wrote:

> Hi All,
> I met below problem, would you help to tell me how to handle it?
> Now has two machine: A (primary), B (seconday)
> I installed DRBD8.3.0 on these two machines.
> 1) Now A is primary, B is seconday.
> 2) B power off
> 3) Then, on machine A, issue command "/sbin/drbdadm  primary  r0",  
> and issue command "/bin/mount /dev/drbd0 /usr/local/fountain/ 
> database/xyz"
> cat /proc/drbd
> found its status is "primary/unknown"
> It is reasonably.
> 4) Now B power on.
> On machine A, issue command:
> "/sbin/umount /dev/drbd0"  and  "/sbin/drbdadm  secondary r0".
> And then, on machine B, issue command:
> "/sbin/drbdadm  primary  r0", and issue command "/bin/mount /dev/ 
> drbd0 /usr/local/fountain/database/xyz"
> 5) Now problem occurs:
> On machine B, "primary/unknown", on machine A, "secondary/unknown"
> And I do above procedure two times, the second time, it is just like  
> above; at the first time, the DRBD status is proper.
> Would you help to explain this?
> Any other command is needed to avoid this problem ?
> Best regards,
> Edward
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