how to mount my new btrfs formated drive

[oshunluvr]

Still weird.

Try:

sudo -i
umask

[oshunluvr]

I can't figure out why this is happening.

[oshunluvr]

What's fdisk show for /dev/sdb

[vinnywright]

root@vinny-Bonobo-Extreme:~# umask
0022

fdisk

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1  1953525167   976762583+  ee  GPT
Partition 1 does not start on physical sector boundary.
root@vinny-Bonobo-Extreme:~#

parted

Model: ATA HGST HTS721010A9 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system  Name     Flags
 1      1049kB  1000GB  1000GB  btrfs        primary

I half to do some chores ,,,, then I will start to try and research this some as well.
VINNY

[oshunluvr]

Vinny, try this with btrfs mounted;

cd /mnt/btrfs
sudo chmod go-w .
cd ..
ls -l

What's the output?

[vinnywright]

vinny@vinny-Bonobo-Extreme:/mnt$ ls -l
total 8
drwxr-xr-x 1 root root 94 Jan 31 15:12 btrfs
drwxr-xr-x 2 root root 4096 Oct 10 22:34 disk
drwxr-xr-x 2 root root 4096 Jan 31 15:06 test
vinny@vinny-Bonobo-Extreme:/mnt$

I new we could change it ,,,,,,,,,but why would it default to doing this when mounted in fstab ......I could find no info on it or others seeing it .

VINNY

[oshunluvr]

Me neither - until I mounted one my my multi-disk btrfs filesystems at the root level - and I saw the same thing here. Once I did the above commands, it mounted correctly then on..

[anika200]

I followed post #9 and all is working well. I have btrfs subvolume named data which is on 2nd harddrive and mounted on ~/data.

I post my notes below for anyone to follow, each paragraph is an interaction with the konsole.

lee@lee-H67N-USB3-B3:~$ sudo mount /dev/sdb1 /mnt
[sudo] password for lee: 
lee@lee-H67N-USB3-B3:~$ sudo btrfs subvolume create /mnt/@data Create subvolume '/mnt/@data'


lee@lee-H67N-USB3-B3:~$ ls -l /mnt
total 0
drwxr-xr-x 1 root root 0 Feb  1 10:49 @data


lee@lee-H67N-USB3-B3:~$ ls -l
total 0
drwxrwxr-x 1 lee lee  264 Nov 30 20:00 bin
drwxrwxr-x 1 lee lee    0 Jan 29 21:33 data


lee@lee-H67N-USB3-B3:~$ sudo chmod o-rx /mnt/@data
lee@lee-H67N-USB3-B3:~$ sudo chown lee:lee /mnt/@data
lee@lee-H67N-USB3-B3:~$ sudo umount /mnt


lee@lee-H67N-USB3-B3:~$ sudo mount /dev/sdb1 -o rw,relatime,space_cache,subvol=@data /home/lee/data

[B]I made some test folders and they have right permissions.[/B]
lee@lee-H67N-USB3-B3:~$ ls -l ~/data
total 0
drwxrwxr-x 1 lee lee 244 Feb  1 10:58 test2
drwxrwxr-x 1 lee lee   0 Feb  1 10:58 test folder


[B]Now I edid /etc/fstab and add the line below and reboot.[/B]
UUID=3dddb32d-50ad-4ed1-bdc2-b1fd9ec6f47f /home/lee/data btrfs rw,relatime,space_cache,subvol=@data 0 0


[B]After reboot and adding another test folder all looks well.[/B]
lee@lee-H67N-USB3-B3:~$ cd ~/data
lee@lee-H67N-USB3-B3:~/data$ ll
total 0
drwxr-x--- 1 lee lee  52 Feb  1 11:18 ./
drwxr-xr-x 1 lee lee 616 Feb  1 11:18 ../
drwxrwxr-x 1 lee lee   0 Feb  1 11:18 New Folder/
drwxrwxr-x 1 lee lee 244 Feb  1 10:58 test2/
drwxrwxr-x 1 lee lee   0 Feb  1 10:58 test folder/

I changed the fstab line from post #9 to below as I did not need compression (audio, video) and the btrfs was in the wrong position.
UUID=3dddb32d-50ad-4ed1-bdc2-b1fd9ec6f47f /home/lee/data btrfs rw,relatime,space_cache,subvol=@data 0 0

Thanks for the great thread

[vinnywright]

Humm you did some strange stuff their ......................

lets see

ls -l /mnt

ls -l ~/

cat /etc/fstab

and

df -h

to start.

VINNY

[anika200]

Strange?

lee@lee-H67N-USB3-B3:~$ ls -l /mnt
total 0
lee@lee-H67N-USB3-B3:~$

lee@lee-H67N-USB3-B3:~$ ls -l ~/
total 0
drwxrwxr-x 1 lee lee  264 Nov 30 20:00 bin
drwxr-x--- 1 lee lee   52 Feb  1 11:18 data
drwxr-xr-x 1 lee lee  110 Feb  1 11:35 Desktop
drwxr-xr-x 1 lee lee 1694 Jan 28 19:18 Documents
drwxr-xr-x 1 lee lee 1390 Jan 29 20:34 Downloads
drwxr-xr-x 1 lee lee    0 Jan 28 18:24 Music
drwxrwxr-x 1 lee lee  446 Jan 29 21:12 Pictures
drwxr-xr-x 1 lee lee    0 Jan 28 18:24 Public
drwx------ 1 lee lee   38 Jan 29 20:33 SpiderOak Hive
drwxr-xr-x 1 lee lee    0 Jan 28 18:24 Templates
drwxr-xr-x 1 lee lee    0 Jan 28 18:24 Videos
lee@lee-H67N-USB3-B3:~$

lee@lee-H67N-USB3-B3:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda3 during installation
UUID=168c70e2-2da1-4c80-a013-4dfb0396811f /               btrfs   defaults,subvol=@ 0       1
# /home was on /dev/sda3 during installation
UUID=168c70e2-2da1-4c80-a013-4dfb0396811f /home           btrfs   defaults,subvol=@home 0       2
UUID=3dddb32d-50ad-4ed1-bdc2-b1fd9ec6f47f /home/lee/data btrfs rw,relatime,space_cache,subvol=@data 0 0
# swap was on /dev/sdb5 during installation
UUID=a6681407-f973-425f-a35a-3effdac732c9 none            swap    sw              0       0
tmpfs           /tmp    tmpfs   nodev,nosuid    0       0
 
lee@lee-H67N-USB3-B3:~$

lee@lee-H67N-USB3-B3:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        78G   34G   44G  44% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
udev            3.9G  4.0K  3.9G   1% /dev
tmpfs           3.9G  264K  3.9G   1% /tmp
tmpfs           797M  1.1M  796M   1% /run
none            5.0M  4.0K  5.0M   1% /run/lock
none            3.9G   14M  3.9G   1% /run/shm
none            100M   24K  100M   1% /run/user
/dev/sda3        78G   34G   44G  44% /home
/dev/sdb1       225G  653M  223G   1% /home/lee/data
/dev/sda2       147G  127G   20G  87% /media/lee/MLion
lee@lee-H67N-USB3-B3:~$

Looking normal, no?

Btw, if anyone knows why I get the weird text wrapping when I paste in the code tags please let me know. I always have to edit it to get end of lines on the first line and then there are the example above (fstab) where it wraps to the next line.
Maybe because I copy from Yakuake?

[vinnywright]

looks good ,,,,,,strange ,,,,,well I had just got up and you working in /mnt instead of /mnt/something through me ......& mounting the disk to a DIR in ~/ (which is fine) I'm just used to linking from ~/ to a DIR in /mnt



you should be good

VINNY