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btrfs

Titel:
btrfs
Autor:
NicTheQuick
Datum:
26. Januar 2017 12:06
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root@server:~# cat /etc/issue.net 
Ubuntu 16.04.1 LTS

root@server:~# uname -a
Linux server 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

root@server:~# fdisk -l /dev/sda
Medium /dev/sda: 1,8 TiB, 2000398934016 Bytes, 3907029168 Sektoren
Einheiten: sectors von 1 * 512 = 512 Bytes
Sektorengröße (logisch/physisch): 512 Bytes / 4096 Bytes
I/O Größe (minimal/optimal): 4096 Bytes / 4096 Bytes
Typ der Medienbezeichnung: dos
Medienkennung: 0xbexxxxc0

Gerät      Boot    Start       Ende   Sektoren Größe Id Typ
/dev/sda1           2048    2050047    2048000 1000M fd Linux raid autodetect
/dev/sda2        2050048   10049535    7999488  3,8G 82 Linux Swap / Solaris
/dev/sda3       10049536   51009535   40960000 19,5G fd Linux raid autodetect
/dev/sda4       51009536 3907029167 3856019632  1,8T 83 Linux

root@server:~# fdisk -l /dev/sdb
Medium /dev/sdb: 1,8 TiB, 2000398934016 Bytes, 3907029168 Sektoren
Einheiten: sectors von 1 * 512 = 512 Bytes
Sektorengröße (logisch/physisch): 512 Bytes / 4096 Bytes
I/O Größe (minimal/optimal): 4096 Bytes / 4096 Bytes
Typ der Medienbezeichnung: dos
Medienkennung: 0x31xxxxd0

Gerät      Boot    Start       Ende   Sektoren Größe Id Typ
/dev/sdb1           2048    2050047    2048000 1000M fd Linux raid autodetect
/dev/sdb2        2050048   10049535    7999488  3,8G 82 Linux Swap / Solaris
/dev/sdb3       10049536   51009535   40960000 19,5G fd Linux raid autodetect
/dev/sdb4       51009536 3907029167 3856019632  1,8T 83 Linux

root@server:~# mkfs.btrfs -m raid1 -d raid1 -L "Containers" /dev/sda4 /dev/sdb4
btrfs-progs v4.4
See http://btrfs.wiki.kernel.org for more information.

Label:              Containers
UUID:               7fcbfa35-1a5a-4702-818d-4dddcbeec16b
Node size:          16384
Sector size:        4096
Filesystem size:    3.59TiB
Block group profiles:
  Data:             RAID1             1.01GiB
  Metadata:         RAID1             1.01GiB
  System:           RAID1            12.00MiB
SSD detected:       no
Incompat features:  extref, skinny-metadata
Number of devices:  2
Devices:
   ID        SIZE  PATH
    1     1.79TiB  /dev/sda4
    2     1.79TiB  /dev/sdb4


root@server:~# blkid
/dev/sda2: UUID="69409a33-7388-4d1c-8b8a-3dbbc6f7ffcb" TYPE="swap" PARTUUID="befbc4c0-02"
/dev/sda1: UUID="eca50505-7162-2228-51b4-f760fdb31688" UUID_SUB="6a3e3880-d5cc-e3fc-03a4-8fe4c257a873" LABEL="h2654599:0" TYPE="linux_raid_member" PARTUUID="befbc4c0-01"
/dev/sda3: UUID="8c76da36-5996-cbab-212a-6d0a12d6604b" UUID_SUB="a4f13949-7d8b-5e2e-44b2-9a846970812c" LABEL="h2654599:1" TYPE="linux_raid_member" PARTUUID="befbc4c0-03"
/dev/sda4: LABEL="Containers" UUID="7fcbfa35-1a5a-4702-818d-4dddcbeec16b" UUID_SUB="72b0e518-b4ad-4b06-b508-0ee677e750fd" TYPE="btrfs" PARTUUID="befbc4c0-04"
/dev/sdb1: UUID="eca50505-7162-2228-51b4-f760fdb31688" UUID_SUB="3c5b8da5-ee52-c46a-95be-6c590e11c168" LABEL="h2654599:0" TYPE="linux_raid_member" PARTUUID="3199a6d0-01"
/dev/sdb2: UUID="688eb599-cfaa-4bbf-871e-85f94a0f3a12" TYPE="swap" PARTUUID="3199a6d0-02"
/dev/sdb3: UUID="8c76da36-5996-cbab-212a-6d0a12d6604b" UUID_SUB="3fa1ef6a-2dd4-d54c-40d0-4289d3e4898a" LABEL="h2654599:1" TYPE="linux_raid_member" PARTUUID="3199a6d0-03"
/dev/sdb4: LABEL="Containers" UUID="7fcbfa35-1a5a-4702-818d-4dddcbeec16b" UUID_SUB="26cb8e71-b815-4a43-9aa4-f596eb401454" TYPE="btrfs" PARTUUID="3199a6d0-04"
/dev/md0: UUID="61f12019-eb89-4db7-8f59-35a5dd12bd00" TYPE="ext4"
/dev/md1: UUID="fe94a74a-e37e-444f-9338-529aa7975d0a" TYPE="ext4"

root@server:~# btrfs filesystem show
Label: 'Containers'  uuid: 7fcbfa35-1a5a-4702-818d-4dddcbeec16b
	Total devices 2 FS bytes used 640.00KiB
	devid    1 size 1.79TiB used 2.01GiB path /dev/sda4
	devid    2 size 1.79TiB used 2.01GiB path /dev/sdb4

root@server:~# 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>
proc            				/proc		proc	nodev,noexec,nosuid		0	0
/dev/md1					/		ext4	defaults			1	1
/dev/sda2					none		swap	defaults			0	0
/dev/sdb2					none		swap	defaults			0	0
/dev/md0					/boot		ext4	defaults			1	2

#neu
UUID=7fcbfa35-1a5a-4702-818d-4dddcbeec16b	/mnt/Containers	btrfs	defaults,subvol=@,compress	0	1

root@server:~# ls -l /mnt
insgesamt 4
drwxr-xr-x 2 root root 4096 Jan 26 11:25 Containers

root@server:~# mount /mnt/Containers
mount: mount(2) failed: Datei oder Verzeichnis nicht gefunden