From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mbox.akmail.it ([213.21.176.227]:39088 "EHLO pop.aknet.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754722AbcLSM4Q (ORCPT ); Mon, 19 Dec 2016 07:56:16 -0500 Message-ID: <1482152074.5857d88ab133a@webmail.adria.it> Date: Mon, 19 Dec 2016 13:54:34 +0100 From: bepi@adria.it To: Qu Wenruo Cc: linux-btrfs@vger.kernel.org Subject: Re: [CORRUPTION FILESYSTEM] Corrupted and unrecoverable file system during the snapshot receive References: <1479730155.5832e3eb3fde8@webmail.adria.it> <83dbcf2c-df10-5628-fc46-9d33a7bf78af@cn.fujitsu.com> In-Reply-To: <83dbcf2c-df10-5628-fc46-9d33a7bf78af@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: > > > At 11/21/2016 08:09 PM, bepi@adria.it wrote: > > Hi. > > > > My system: Fedora 23, kernel-4.7.10-100.fc23.x86_64 > btrfs-progs-4.4.1-1.fc23.x86_64 > > > > Testing the remote differential receive (via ssh and in local network) of > 24 > > sequential snapshots, and simultaneously deleting the snapshot, (in the > same > > file system, but in a different subvolume), there has been an file access > error, > > and the file system has corrupt. > > Are you using qgroup? > > IIRC, Filipe fixed a problem which could cause backref corruption which > only happens if quota is enabled. > > Thanks, > Qu Unfortunately not. I read that thread (and others), but no one it seemed like my case. To you (Thanks). Gdb > > > > > Both scrub, both recovery and clear_cache mount options, both btrfsck, > have > > failed, the file system is left in a state unusable. > > > > After reformatting the filesystem, remote receive of 24 snapshots worked > properly. > > > > The file system is used exclusively for receive the snapshot, it is > composed of > > a single device. > > The initial snapshot is a linux installation of 50Gb. > > > > > > I think that there was a race condition between the receive and deletion > of > > snapshots (that were performed on two different subvolume). > > > > > > Best regards. > > > > gdb > > > > ---------------------------------------------------- > > This mail has been sent using Alpikom webmail system > > http://www.alpikom.it > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > > ---------------------------------------------------- This mail has been sent using Alpikom webmail system http://www.alpikom.it