On 8/30/2018 11:13 AM, Pierre Couderc wrote: > Trying to install a RAID1 on a debian stretch, I made some mistake and > got this, after installing on disk1 and trying to add second disk : > > > root@server:~# fdisk -l > Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors > Units: sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disklabel type: dos > Disk identifier: 0x2a799300 > > Device Boot Start End Sectors Size Id Type > /dev/sda1 * 2048 3907028991 3907026944 1.8T 83 Linux > > > Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors > Units: sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disklabel type: dos > Disk identifier: 0x9770f6fa > > Device Boot Start End Sectors Size Id Type > /dev/sdb1 * 2048 3907029167 3907027120 1.8T 5 Extended > > > And : > > root@server:~# btrfs fi show > Label: none uuid: eed65d24-6501-4991-94bd-6c3baf2af1ed > Total devices 2 FS bytes used 1.10GiB > devid 1 size 1.82TiB used 4.02GiB path /dev/sda1 > devid 2 size 1.00KiB used 0.00B path /dev/sdb1 > > ... > > My purpose is a simple RAID1 main fs, with bootable flag on the 2 > disks in prder to start in degraded mode.... > How to get out ofr that...? > > Thnaks > PC sdb1 is an extended partition, you cannot format an extended partition. change sdb1 into primary partition or add a logical partition into it. -Alberto
