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<p>Hi all,<br>
<br>
Yesterday I rebooted both nodes a couple of times (replacing BBU
RAID batteries) and ended up with:<br>
<br>
drbd0: Split-Brain detected but unresolved, dropping connection!</p>
<p>on both.<br>
</p>
<p>node1: <i>drbd-overview</i><i><br>
</i><i>0:r0/0 StandAlone Primary/Unknown UpToDate/DUnknown
/srv/test1 ext4 3.6T 75G 3.4T 3% </i><br>
</p>
<p>node2: <i>drbd-overview </i><i><br>
</i><i>0:r0/0 StandAlone Secondary/Unknown UpToDate/DUnknown</i></p>
<p>I understand there is a good chance (but not absolute guarantee)
that node1 holds consistent and up to date data.</p>
<p>Q1:<br>
</p>
<p>Is it reasonably possible to mount /dev/drbd0 (/dev/sdb1) on
node2 in read only mode?<br>
</p>
<p>I would like to examine the data before discarding and syncing
everything from node1.<br>
<br>
<i>drbdadm disconnect all</i><i><br>
</i><i>drbdadm -- --discard-my-data connect all</i><br>
</p>
<p>Q2:<br>
<br>
Will the above completely purge all data on node2 or just drbd
metadata?<br>
<br>
I.e. will all 75G have to be fully copied block by block or a lot
less?<br>
<br>
I'm concerned about time and impact on performance when it comes
to terabytes of data.<br>
<br>
Regards,<br>
Adam<br>
</p>
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