From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mbox.akmail.it ([213.21.176.227]:34450 "EHLO pop.aknet.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755430AbcKVNT0 (ORCPT ); Tue, 22 Nov 2016 08:19:26 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by pop.aknet.it (8.12.8/8.12.8) with ESMTP id uAMDJNWC026472 for ; Tue, 22 Nov 2016 14:19:23 +0100 Message-ID: <1479820757.583445d54ca77@webmail.adria.it> Date: Tue, 22 Nov 2016 14:19:17 +0100 From: bepi@adria.it To: linux-btrfs@vger.kernel.org Subject: [CORRUPTION FILESYSTEM] Corrupted and unrecoverable file system during the snapshot receive MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: 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. 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