Linked by Thom Holwerda on Sun 18th May 2008 15:32 UTC, submitted by sjvn
Sun Solaris, OpenSolaris It seems like we're really on the subject of filesystems and related technology the past few days. We had an interview with the man behind BeServed, an item on WinFS' current status, and now we - possibly - have news on ZFS coming to Linux. Possibly, because it's all speculation from here on out.
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I use ZFS on 1GB RAM
by Kebabbert on Mon 19th May 2008 07:43 UTC
Kebabbert
Member since:
2007-07-27

and a P4@2.4GHz. From my ZFS raid, I get like 20MB/sec. I am told it is slow because ZFS is 128bit and it doesnt like my 32 bit cpu. But everything works rock solid. I use OpenSolaris.

Another guy gets 120MB/sec from his ZFS raid, with 64bit cpu - on his blog. It seems that 64bit cpu is beneficial for getting speed.




But the killer feature of being able to rollback the /root to an earlier state, to choose from which snapshot to boot from via GRUB, etc, is really useful. And the snapshots work on a bit level, is is impossible to write to an snapshot. If you destroy a snapshot, every bit gets destroyed.

And, ZFS is so simple too. Ive heard to set ut a raid with linux + lvm is like 25 command lines with difficult syntax. With ZFS it is 2 simple commands. A server enterprise file system like ZFS is very suitable to the average joe, because it is so easy to administer and use. All other raid alternatives are difficult. With ZFS you dont have to make partitions in advance, they grow dynamically and it is light weight as creating a directory. Every user will have a dedicated partition on his own.

Like LaTeX and MS Word, all Word supporters says they can do everything with Word what can be done with LaTeX, but once they try LaTeX - they love it. Just try ZFS and you will change your mind.

Reply Score: 1

RE: I use ZFS on 1GB RAM
by WereCatf on Mon 19th May 2008 08:28 in reply to "I use ZFS on 1GB RAM"
WereCatf Member since:
2006-02-15

And, ZFS is so simple too. Ive heard to set ut a raid with linux + lvm is like 25 command lines with difficult syntax

I have tried LVM2 and I can tell you it is a pain in the butt. I have this old 1ghz Athlon as my file server here at home, and the curious cat as I am I once decided to try LVM2. Well, it was pretty complicated but I got it up and running, worked well for a while, but then one of the disks failed...I didn't have a replacement disk for that so I had to remove it from the system and place the files somewhere else. Now, LVM2 doesn't make that easy. I literally had to move all the files to another system (and delete quite a bit of stuff too cos I didn't have sufficient storage space elsewhere) just because there is no way to remove a disk from LVM2 setup without resizing the partitions and resizing partitions was a complete no-go cos I couldn't allow anything to be written to the broken disk. Since ZFS is a pooled system it allows one to just issue a command for removing one disk from the pool and the system will just locate the files somewhere else in the pool.

Too bad that I can't use ZFS on my server due to memory requirements, it only has 128mb RAM and due to some motherboard issues I haven't been able to find any combination of RAM sticks that would work, only a single stick will function.. :/ I am hoping btrfs will someday be good enough for me to use.

Reply Parent Score: 2

RE[2]: I use ZFS on 1GB RAM
by Kebabbert on Mon 19th May 2008 08:58 in reply to "RE: I use ZFS on 1GB RAM"
Kebabbert Member since:
2007-07-27

Werecatt

If you can not use ZFS on your home server, because of 128MB RAM, maybe you could upgrade your home server? I mean, a server is important. I at least, prioritize the home server and would surely find an old computer, 1GHz + 1GB RAM will do (but you will get 20MB/sec unless you have 64bit cpu). But your data will be safe. Isnt it important enough to shell out 100 bucks on an upgrade?

As someone posted, the advantages is too great not to use on a server.
http://kerneltrap.org/FreeBSD/BSDCan_2008_ZFS_Internals

Reply Parent Score: 1

RE[2]: I use ZFS on 1GB RAM
by Calipso on Mon 19th May 2008 12:24 in reply to "RE: I use ZFS on 1GB RAM"
Calipso Member since:
2007-03-13

Couldn't you just have used lvmove to move all your data off the bad disk and then done a pvremove to remove the disk from the volume group? Also, how could you have used ZFS to remove a drive from the pool if you didn't have the spare space for all your data??

Reply Parent Score: 1