From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f51.google.com ([74.125.83.51]:46162 "EHLO mail-pg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758894AbdKQPUk (ORCPT ); Fri, 17 Nov 2017 10:20:40 -0500 Received: by mail-pg0-f51.google.com with SMTP id z184so2159126pgd.13 for ; Fri, 17 Nov 2017 07:20:40 -0800 (PST) Subject: Re: Btrfs restore error To: Qu Wenruo , linux-btrfs@vger.kernel.org References: <2382a8cf-2137-9622-6074-a082bcbe2b94@gmail.com> From: Jay Message-ID: Date: Fri, 17 Nov 2017 08:20:37 -0700 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 2017-11-16 10:38 PM, Qu Wenruo wrote: > > > On 2017年11月17日 11:56, Jay wrote: >> Hello, >> >> I thought I should report something since there was little information >> on this error. The situation is I have 2 external hard drives on >> Xubuntu. One is not working and I need to move the data over to the >> other. > > "btrfs replace" should be your first option, not "btrfs restore", unless > it's totally damaged and you want to salvage as much as possible. OK, thank you. >> I used 'sudo btrfs restore -v /dev/sde1 /mnt/Old4TB' and >> received 'Error mkdiring /mnt/Old4TB/Jayda TV:2'. > > No extra info like something restored succefully? Just 'Error mkdiring > /mnt/Old4TB/Jayda TV:2'? Correct, the program just exited. > At least it's ENOENT, checking mkdir(3p) should gives your the reason: > --- > ENOENT A component of the path prefix specified by path does > not name > an existing directory or path is an empty string. > > --- > > Did the dir "/mnt/Old4TB" exists in first place? I see, errno was set to 2; ENOENT. Thank you. Yes, Old4TB is a drive that is auto mounted on boot to that permanent mount point. I was able to create a folder on that drive using both mkdir and sudo mkdir. Maybe the btrfs-progs Ubuntu package is not configured correctly... although the forum post shows at lest one other person has had this same error. I am not sure what distro they were using. > Thanks, > Qu > >> I found one forum >> post that said I needed to make the destination folder manually, then >> restore. That did not work. looking at your code 2(%d) is a kernel >> message? not sure what to make of it. I decided to enter a root >> environment with 'sudo su' and the restore worked(the folder still >> existed from previous troubleshoot step). The console is showing files >> being restored. I tried a dry run first which did not show an error. >> Just some feedback and reference. >> >> uname -a >> >> Linux emb 4.10.0-38-generic #42-16.04.1-Ubuntu SMP Tue Oct 10 16:21:20 >> UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >> >> btrfs --version >> >> btrfs-progs v4.4 >> >> Thank you, >> >> Jayotis >> -- >> 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 >