From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from agk.surrey.redhat.com (agk.surrey.redhat.com [172.16.10.74]) by pobox.surrey.redhat.com (8.12.8/8.12.8) with ESMTP id jBEEpjUB029192 for ; Wed, 14 Dec 2005 14:51:45 GMT Received: from agk by agk.surrey.redhat.com with local (Exim 4.34) id 1EmXyq-00021j-V1 for linux-lvm@redhat.com; Wed, 14 Dec 2005 14:51:44 +0000 Date: Wed, 14 Dec 2005 14:51:44 +0000 From: Alasdair G Kergon Subject: Re: [linux-lvm] Invalid new snapshot Message-ID: <20051214145144.GO25866@agk.surrey.redhat.com> References: <539807300512131937s72661636h@mail.gmail.com> Mime-Version: 1.0 Content-Disposition: inline In-Reply-To: <539807300512131937s72661636h@mail.gmail.com> 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; charset="us-ascii" Content-Transfer-Encoding: 7bit To: LVM general discussion and development On Wed, Dec 14, 2005 at 11:37:22AM +0800, Lee Rocky wrote: > when I try to create multi snapshot volumes, sometimes the new snapshot > volume will be marked Invalid after created, somtimes remove then recreate > without problem. > dmesg error > attempt to access beyond end of device > dm-9: rw=17, want=2271285024, limit=8257536 > device-mapper: Error reading/writing snapshot > device-mapper: snapshot is marked invalid What kernel? What software version? (e.g. output of 'lvm version') What lvcreate -s command parameters? (After how many existing snapshots?) What configuration of original LV? ('lvs --segments -v') Any I/O happening to any of the devices involved at around the same time? Alasdair -- agk@redhat.com