From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 21 Feb 2012 11:22:03 +0100 From: Spelic In-reply-to: <4F428012.6090302@redhat.com> Message-id: <4F43704B.50903@shiftmail.org> MIME-version: 1.0 Content-transfer-encoding: 7bit References: <4F405E1B.5030609@shiftmail.org> <20120220135103.GB27388@redhat.com> <4F426234.1020704@shiftmail.org> <4F428012.6090302@redhat.com> Subject: Re: [linux-lvm] DM / LVM hangs if snapshot present on kernel v3.0.3 Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; format="flowed"; charset="us-ascii" To: Zdenek Kabelac Cc: device-mapper development , Mike Snitzer , linux-lvm@redhat.com On 02/20/12 18:17, Zdenek Kabelac wrote: > Dne 20.2.2012 16:09, Spelic napsal(a): >> On 02/20/12 14:51, Mike Snitzer wrote: >>> I've never seen this. Which distro are you using? >> Ubuntu 11.04 64-bit but with vanilla 3.0.3 kernel >> >> Ubuntu's lvm: >> # lvm version >> LVM version: 2.02.66(2) (2010-05-20) >> Library version: 1.02.48 (2010-05-20) >> > So I'd guess you might be a 'victim' of Debian home-brew udev rules for lvm2, > which were unfortunately not consulted with upstream (nor udev, nor lvm). Indeed I have had a few bad experiences with Ubuntu's udev rules, but never like this... I don't think a wrong udev rule can hangup the whole machine with such symptoms, you really think so? - lvs and/or "lvchange --refresh ..." processes hanging forever in kernel code (and AFAIR it was in DM region, that's the /proc/pid/stack trace which I unfortunately lost) - "sync" also cannot complete, so I can only do force reboot without flush