Qu Wenruo <quwenruo.btrfs@xxxxxxx> 於 2020年2月7日 週五 下午12:00寫道： > > All these subvolumes had a missing root dir. That's not good either. > I guess btrfs-restore is your last chance, or RO mount with my > rescue=skipbg patchset: > https://patchwork.kernel.org/project/linux-btrfs/list/?series=170715 > Is it possible to use original disks to keep the restored data safely? I would like to restore the data of /dev/bcache3 to the new btrfs RAID0 at the first and then add it to the new btrfs RAID0. Does `btrfs restore` need metadata or something in /dev/bcache3 to restore /dev/bcache2 and /dev/bcache4? /dev/bcache2, ID: 1 Device size: 9.09TiB Device slack: 0.00B Data,RAID1: 3.93TiB Metadata,RAID1: 2.00GiB System,RAID1: 32.00MiB Unallocated: 5.16TiB /dev/bcache3, ID: 3 Device size: 2.73TiB Device slack: 0.00B Data,single: 378.00GiB Data,RAID1: 355.00GiB Metadata,single: 2.00GiB Metadata,RAID1: 11.00GiB Unallocated: 2.00TiB /dev/bcache4, ID: 5 Device size: 9.09TiB Device slack: 0.00B Data,single: 2.93TiB Data,RAID1: 4.15TiB Metadata,single: 6.00GiB Metadata,RAID1: 11.00GiB System,RAID1: 32.00MiB Unallocated: 2.00TiB Regards, Chiung-Ming Huang
