I was just kind of curious. Will there be any performance difference when we run bonnie on a single disk vs a mirror disks array?
Mirror Disk Array Performance
Single Disk
Dun really see a any performance bonus using a mirrored disk array over a single disk using bonnie…
Some useful links on ZFS Backup.
http://blogs.sun.com/timf/entry/zfs_backup
http://www.markround.com/archives/38-ZFS-Replication.html
Creating a snapshot
zfs snapshot –r mpool@bk1
Replicating an entire pool
zfs send –R mpool@bk1 | zfs receive –F –dvu dpool
Very relevant and interesting PDF slides..
http://wikis.sun.com/download/attachments/102400619/S304013_OpenStorage_ZFS_COMSTAR.pdf
http://wikis.sun.com/display/OpenSolarisInfo200906/COMSTAR+Prerequisites
http://www.nexenta.org/projects/site/wiki/SettingISCSI
http://support.nexenta.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=132&nav=0,12
Well based on those resources, I was able to configure my open solaris to share ISCSI just like how Nexenta has done it. Hmm… so my suspicion is confirmed. Nexenta Community is bascially a snazzy frontend over all the solaris terminal commands…
Installation Command:
wget -O – www.napp-it.org/nappit | perl
Addendum: Even Linux seems to have iSCSI…
If you are a newbie like me and am playing with ZFS. One of the problems u might encounter is having absolutely no idea how to start. In linux, we know the SATA drives are all in /dev and they are like:
sda, sdb, sdc, …
However in solaris, you see a whole lot of stuff in /dev/dsk. How do we know which ones are the drives that we can add to the zpool and starting playing with our beloved ZFS?
If you are like a newbie like me, you will probably find the above listing of devices cryptic. I mean.. out of the hundreds… which are harddisks?
So when you try out one by one, you will get errors like:
cannot open ‘c7t1d0d0’: no such device in /dev/dsk
Hmm.. so how do we go about finding out about what kind of hard drives there are? The trick is in the format command.
A format command as you can see will very quickly isolate for you all your drive names. As you can see, c7t0d0, c7t2d0, c7t3d0 are just some of my drives.
