Hi Chris, please find below attached the complete log while executing all the brtrfs commands, all of them failed. ;-( https://bpaste.net/show/4d8877a49b80 https://bpaste.net/show/7e2e5aa30741 https://bpaste.net/show/482e91b25fc5 https://bpaste.net/show/5093cc3daa5a https://bpaste.net/show/a24935eb5a1b Thanks On Tue, Apr 12, 2016 at 9:58 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > On Tue, Apr 12, 2016 at 9:48 AM, lenovomi <lenovomi@xxxxxxxxx> wrote: > >> root@ubuntu:/home/ubuntu# btrfs restore -D -v /dev/sda /mnt/usb/ >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> Csum didn't match >> Couldn't read tree root >> Could not open root, trying backup super >> warning, device 2 is missing >> warning devid 2 not found already >> warning devid 3 not found already >> warning devid 4 not found already >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> Csum didn't match >> Couldn't read tree root >> Could not open root, trying backup super >> warning, device 2 is missing >> warning devid 2 not found already >> warning devid 3 not found already >> warning devid 4 not found already >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> checksum verify failed on 17802818387968 found FF45E2D3 wanted BFB02AEC >> Csum didn't match >> Couldn't read tree root >> Could not open root, trying backup super >> > > Why are devices 2, 3, 4 missing? I think there's a known issue where > btrfs fi show might see drives as available that other tools won't > see. Try 'btrfs dev scan' and then repeat the restore command with -D > just to see if the missing device warnings go away. If devices are > missing, it's kinda hard to do a restore. > > > If these are hard drives, there should be supers 0, 1, 2 and they > should all be the same. But they may not be the same on each drive, so > it's worth checking: > > btrfs-show-super -f <eachdevice> > > And then also btrfs-find-root <anydevice> > > > > > -- > Chris Murphy > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
