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From: brem belguebli <brem.belguebli@gmail.com>
To: device-mapper development <dm-devel@redhat.com>
Subject: multipath blocking a single path making multipath -ll , lvm commands go to D state
Date: Sat, 17 Apr 2010 22:26:55 +0200	[thread overview]
Message-ID: <1271536015.5449.115.camel@localhost> (raw)
In-Reply-To: <1271503066.9079.21.camel@localhost>

Hello,

I'm trying to troubleshoot a problem we had on RHEL 5.x (dm-mp 0.4.7.x).

When a path of a multipath'd device is in blocked state (echo blocked
> /sys/bus/sdX/device/state), multipath -ll, lvm (vgs, ...) go to D
state rendering the whole thing unresponsive (global wait ratio hitting
100%). 

Tried to figure out if newer versions of dm-mp are affected, and tried
the same test on a fedora 12 box (dm-mp 0.4.9-6) and got the same
results.

device timeout is set to 30, queue_depth is 16, multipath configuration
set to "no_path_retry fail".

Nothing in syslog or anything that could help

Thanks

      reply	other threads:[~2010-04-17 20:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-13 15:21 [PATCH] multipath_tools: add alias while printing checker_message Moger, Babu
2010-04-17 11:17 ` Christophe Varoqui
2010-04-17 20:26   ` brem belguebli [this message]

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