Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m3UKPYnA004559 for ; Wed, 30 Apr 2008 16:25:34 -0400 Received: from vms173003pub.verizon.net (vms173003pub.verizon.net [206.46.173.3]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m3UKPKNi006576 for ; Wed, 30 Apr 2008 16:25:20 -0400 Received: from [192.168.2.102] ([72.91.189.24]) by vms173003.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0K05004XYN8UO372@vms173003.mailsrvcs.net> for linux-lvm@redhat.com; Wed, 30 Apr 2008 15:22:06 -0500 (CDT) Date: Wed, 30 Apr 2008 16:24:58 -0400 From: Gerry Reno Subject: Re: [linux-lvm] F7 will not boot after running backup w/snapshot In-reply-to: <4818BA5D.6070501@Media-Brokers.com> Message-id: <4818D59A.8020906@verizon.net> MIME-version: 1.0 Content-transfer-encoding: 7bit References: <4817C2FD.1010909@verizon.net> <4817D97D.8060805@verizon.net> <4817ECAF.4020806@verizon.net> <48187B91.4060901@verizon.net> <1c748a490804300809s304f7fdfx55aeb0fd9c6cc7ab@mail.gmail.com> <4818AB1C.9030809@verizon.net> <4818BA5D.6070501@Media-Brokers.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"; format="flowed" To: LVM general discussion and development Charles, Here's a snapshot ramdisk reference: http://linuxsoftware.co.nz/blog/2008/03/11/lvm-snapshot-with-no-free-diskspace The ramdisk has been working without problem. I tested it quite a bit before putting it into production. But I don't know LVM internals so I cannot say whether it could have had anything to do with the hang that occurred. Regards, Gerry Charles Marcus wrote: > On 4/30/2008 1:23 PM, Gerry Reno wrote: >> My concern is that there is a bug somewhere in the snapshot >> mechanism. I've seen other people report what they said were >> corruption problems resulting from snapshots. > > This is quite scary to someone like me who is new to LVM and using > snapshots for backups (whether automated or not)... > > I'd really like to hear from some of the devs on this, and what they > think may have caused it... > > Incidentally... this is the first time I've heard of someone using a > Ramdisk as the snapshot volume... any chance that could have been > involved somehow? >