1 Ganeti extstorage provider for local zfs volumes
3 http://docs.ganeti.org/ganeti/master/html/man-ganeti-extstorage-interface.html
5 It also encludes LVM emulation which enable zfs to work as plain disk type.
7 This allows sage of drbd where one (or both) sides are on zfs, and supports
8 gnt-backup export and import.
12 On node which will host zfs storage pool
14 cd /usr/share/ganeti/extstorage/
15 git clone https://github.com/ffzg/ganeti-extstorage-zfs zfs
22 1-enable-ext-template.sh 2-create-log-directory.sh 3-lvm-wrappers.sh
24 Cron helper can be install under /etc/cron.daily
27 daily-block-snapshot purge-log
29 Overview commands are available (try running them to see output):
32 adopt backup ill instance list node
34 backup and instance are wrappers for running gnt-* commands
35 with same name on master node
37 Create test instances:
40 t/drbd.sh t/plain.sh t/zfs.sh
42 Review that instaces have been created:
46 Test ganeti commands after reading them:
49 t/gnt-backup-export.sh t/gnt-instance-modify.sh
54 Ganeti's extstorage provider doesn't support drbd target. But, lvm emulation scripts are sufficiant enough
55 to create -t drbd instance or convert plain (created on zfs thanks to wrappers ;-) to drbd.
58 KNOWN BUGS for extstorage
60 - gnt-backup export doesn't work because extstorage snapshoot hook are not available
61 - gnt-instance move works from somewhere to zfs, but not from zfs to somewhere
64 KNOWN BUGS for using -t plain on top of zfs
66 - cron/daily-block-snapshot snapshots are not correctly renamed
67 - bin/adopt will create new zvol using send/receive to break dependency on origin
68 (otherwise, deleting of origin file system will also delete new adopted instance)