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

To: Mike Snitzer <snitzer@...17...>
Cc: Neil Brown <neilb@...122...>, linux-raid@...25..., nbd-general@lists.sourceforge.net, linux-kernel@...25..., Herbert Xu <herbert@...125...>
Subject: Re: [Nbd] raid1 with nbd member hangs MD on SLES10 and RHEL5
From: Paul Clements <paul.clements@...124...>
Date: Thu, 14 Jun 2007 21:00:44 -0400
Message-id: <4671E4BC.9080806@...124...>
In-reply-to: <170fa0d20706131630p6cd29aa5i8f51856780a9c691@...18...>
References: <170fa0d20706121930g3b89ddeex8b31c8923d2a0ff6@...18...> <18031.22930.243723.550238@...123...> <170fa0d20706121959w480213bcvaba1b6881710379f@...18...> <170fa0d20706122009h5e3db54ek7487be4940a3d780@...18...> <18031.25581.353761.802283@...123...> <170fa0d20706122130q2c77d365tbe9261bab1a5b1b@...18...> <170fa0d20706131123q17e4fb9ehe6be25a07462cc30@...18...> <170fa0d20706131630p6cd29aa5i8f51856780a9c691@...18...>

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
2.6.16.46-0.12-smp 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.

--
Paul

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- Re: [Nbd] raid1 with nbd member hangs MD on SLES10 and RHEL5
  - From: "Mike Snitzer" <snitzer@...17...>

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