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Home ZFS NAS Project
Background
Hard Drive Choice
Raid Levels
Questions
are iSCSI targets connected on bootup (Windows):
**yes**
are iSCSI targets connected on bootup (Ubuntu): yes, is seems initiator is able to reconnect even after a target restart
can you grow iSCSI targets as normal files
can you grow iSCSI targets as ZFS volumes: yes, (zfs set volsize=2g <POOL>/<DATASET>)
Is there a write gain for 4 drive raid 5: yes
What is the performance hit for parity calculations: very small, active cpu usage is less than 2%, local throughput at 4 drives is 200MB/s, iSCSI access is at 125MB/s or 1000mb/s
what is the added latency of ethernet/tcp transmissions: 0.1ms - 0.2ms
NFS Automounter Homes
On Server
/etc/rc.conf
...
rpcbind_enable="YES"
nfs_server_enable="YES"
mountd_flags="-r"
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
...
Disable ZLI on nfs dataset
zfs set sync=disabled <DATASET>
Share Dataset
zfs set sharenfs="-maproot=root,-alldirs" <DATASET>
On Client
Install autofs
/etc/default/autofs
...
BROWSE_MODE="yes"
LOGGING="debug"
MOUNT_NFS_DEFAULT_PROTOCOL=3
...
/etc/auto.master
/netHomes /etc/auto.home --timeout=300
/etc/auto.homes
<SERVERNAME> -rw,soft,timeo=5,intr <IP/HOSTNAME>:/<DATASET>