On 8/3/11 5:22 AM, Florian Haas wrote:
This is a result of the RHEL 6.1 kernel containing backports of
post-2.6.32 upstream code that removed the notion of barriers from the
I/O stack. Strictly speaking, this does not break the kernel ABI so this
is no violation of Red Hat's own policy, but it's causing some headaches
nonetheless.
The issue you are facing is fixed in DRBD 8.3.11 and DRBD 8.4.0. LINBIT
support customers were provided with a version that fixes this issue,
promptly after it became known.
I just compiled 8.3.11 against 2.6.32-131.6.1.el6.x86_64 this morning
and while it resolved the barrier issue, I am still seeing my nodes
kernel panic when I reboot one.
I'm going to update to 8.4.0 and see what happens. If it still suffers
stability issues, I will post panic output.
David
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