Re: [Jfs-discussion] JFS in production environment

[Gary G. <mr...@us...>]

John Goerzen wrote:

> Hello,
> 
<big snip>
> So, I am growing uneasy about using JFS on Linux in production servers
> or even important workstations.  I'm setting up a new server next week
> and might have to go back to ext3 or something.
> 
> I really like JFS overall and would like to keep using it.  Does anyone
> have suggestions or experience to share wrt. JFS in mission-critical
> environments?
> 

We've used JFS for two and a half years on our production servers. 
They're typically two-way Xeon P3 or P4's with two to six gigabytes of 
ram, ServeRaid hardware arrays with five to twelve scsi spindles.  The 
servers range from very busy ftp servers to SourceForge Enterprise 
Edition project servers.  We're currently running 2.4.20 with backported 
errata and JFS 1.1.5  (stock, not distro).

Our experience with JFS has been good.  Not trouble free, but good. 
Recently one server had a JFS fs go read-only on /var/spool while 
mailing nine thousand users of impending downtime on that server.  We're 
still working through that one.  On the other hand we have lost complete 
ext3 fs's in a crash situation.  We don't have experience with Reiser or 
XFS.

I don't have metrics but my gut feel is JFS has higher throughput, lower 
cpu usage, but higher latency than Ext3.  We continue to plan on using JFS.

Gary


> -- John
> 
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-- 
---------------------------
Regards, Gary Gaydos
IBM Linux Technology Center
http://ltc.linux.ibm.com
http://www.ibm.com/linux/ltc