Public:Esdcluster

Теперь у нас есть блочное устройство /dev/drbd0!

root@esd1-deb10:/mnt# cat /proc/drbd version: 8.4.10 (api:1/proto:86-101) srcversion: 9B4D87C5E865DF526864868

0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
   ns:210772764 nr:529007 dw:1593007 dr:210779726 al:1826 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0

root@esd2-deb10:/mnt# cat /proc/drbd

version: 8.4.10 (api:1/proto:86-101)
srcversion: 15055BDD6F0D23278182874
 0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
    ns:529014 nr:210772771 dw:211301785 dr:1061397 al:15 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0

Создаем распределенную файловую систему на Distributed Replicated Block Device (DRBD):

mkfs.ocfs2 -N 2 -L ocfs2_drbd0_o2cb --cluster-stack o2cb --cluster-name esdcluster --global-heartbeat -F /dev/drbd0

mkfs.ocfs2 1.8.5
Cluster stack: o2cb
Cluster name: esdcluster
Stack Flags: 0x1
NOTE: Feature extended slot map may be enabled
Overwriting existing ocfs2 partition.
WARNING: Cluster check disabled.
Proceed (y/N): y
Label: ocfs2_drbd0_o2cb
Features: sparse extended-slotmap backup-super unwritten inline-data strict-journal-super xattr indexed-dirs refcount discontig-bg append-dio
Block size: 4096 (12 bits)
Cluster size: 4096 (12 bits)
Volume size: 214741774336 (52427191 clusters) (52427191 blocks)
Cluster groups: 1626 (tail covers 11191 clusters, rest cover 32256 clusters)
Extent allocator size: 109051904 (26 groups)
Journal size: 268435456
Node slots: 2
Creating bitmaps: done
Initializing superblock: done
Writing system files: done
Writing superblock: done
Writing backup superblock: 4 block(s)
Formatting Journals: done
Growing extent allocator: done
Formatting slot map: done
Formatting quota files: done
Writing lost+found: done
mkfs.ocfs2 successful

Полный вывод того, что ФС собралась:

root@esd1-deb10:/mnt# mounted.ocfs2 -f
Device                             Stack  Cluster  F  Nodes
/dev/mapper/esd1--deb10--vg-drbd0  o2cb   esd         esd1-deb10, esd2-deb10
/dev/drbd0                         o2cb   esd         esd1-deb10, esd2-deb10

root@esd2-deb10:/mnt# mounted.ocfs2 -f
Device                             Stack  Cluster  F  Nodes
/dev/mapper/esd2--deb10--vg-drbd0  o2cb   esd         esd1-deb10, esd2-deb10
/dev/drbd0                         o2cb   esd         esd1-deb10, esd2-deb10

... и краткий:

root@esd1-deb10:/mnt# mounted.ocfs2 -d
Device                             Stack  Cluster  F  UUID                              Label
/dev/mapper/esd1--deb10--vg-drbd0  o2cb   esd         6043DDD2A6444C4CA370575F40E50723  ocfs2_drbd0
/dev/drbd0                         o2cb   esd         6043DDD2A6444C4CA370575F40E50723  ocfs2_drbd0

root@esd2-deb10:/mnt# mounted.ocfs2 -d
Device                             Stack  Cluster  F  UUID                              Label
/dev/mapper/esd2--deb10--vg-drbd0  o2cb   esd         6043DDD2A6444C4CA370575F40E50723  ocfs2_drbd0
/dev/drbd0                         o2cb   esd         6043DDD2A6444C4CA370575F40E50723  ocfs2_drbd0