-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 19/02/15 09:29, Bob Williams wrote: > My system comprises 2 x 3TB hard drives, each partitioned into a > 4GB swap, a 36GB /, and the rest for /home. / and /home are (were) > then assembled into btrfs raid1 arrays, with both metadata and data > being mirrored. > > I then installed the wrong graphics drivers for my nVidia card, > resulting in an unbootable system. The only way out was to > reinstall the system (openSUSE 13.2), but it only used a single > drive, resulting in the following setup: > > :~ # btrfs fi sh Label: none uuid: > d5919e1a-b52f-421d-9785-cb081ae3b334 Total devices 1 FS bytes used > 5.60GiB devid 1 size 36.00GiB used 8.04GiB path /dev/sdf2 > > Label: 'home' uuid: 56884b1d-93ab-4db9-bc93-eff3833e91e1 Total > devices 2 FS bytes used 1.06TiB devid 1 size 2.69TiB used > 1.07TiB path /dev/sdf3 devid 2 size 2.69TiB used 1.07TiB path > /dev/sdg3 > > Label: none uuid: 06ea503f-58ff-48ca-9c50-b0679288fae6 Total > devices 2 FS bytes used 15.87GiB devid 2 size 36.00GiB used > 17.03GiB path /dev/sdg2 *** Some devices missing > > Btrfs v3.16.2+20141003 > > :~ # uname -r 3.16.7-7-desktop > > I would like some advice on how to safely delete the contents of > /dev/sdg2, and then add it to /dev/sdf2 to make a new raid1 array. > I know how to do the second step, > > mkfs.btrfs -m raid1 -d raid1 /dev/sdf2 /dev/sdg2 > > (or would that destroy the data on /dev/sdf2 ?) > Whoops. I really meant to say:
# btrfs device add -f /dev/sdg2 / # btrfs balance start -dconvert=raid1 -mconvert=raid1 / > and I could delete the contents of the partition, but in between > these two steps I'm supposing I need to disassemble one raid1 array > and then put it together again. > > Or maybe I'm making this seem harder than it really is? > > Bob -- To unsubscribe from this list: send the line "unsubscribe > linux-btrfs" in the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > - -- Bob Williams System: Linux 3.16.7-7-desktop Distro: openSUSE 13.2 (x86_64) with KDE Development Platform: 4.14.3 Uptime: 06:00am up 7:55, 3 users, load average: 0.16, 0.05, 0.06 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlTltYoACgkQ0Sr7eZJrmU7KbgCgogQVHMce+HzMWnBoUSQr56gP vusAn3J73p7QYfLhJDOqXlgilsAmX2ZF =Y4Wx -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
