Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

From: Paul Clements
Date: Thu Jun 14 2007 - 21:00:56 EST

Mike Snitzer wrote:

Just a quick update; it is really starting to look like there is
definitely an issue with the nbd kernel driver. I booted the SLES10 kernel with maxcpus=1 to test the theory that the
nbd SMP fix that went into 2.6.16 was in some way causing this MD/NBD
hang. But it _still_ occurs with the 4-step process I outlined above.

The nbd0 device _should_ feel an NBD_DISCONNECT because the nbd-server
is no longer running (the node it was running on was powered off)...

What do you mean, nbd should _feel_ an NBD_DISCONNECT ?

NBD_DISCONNECT is a manual process, not an automatic one.

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