fileserver questions

2008-08-28 Thread Michael John Copeland

Hello All,
I am building a fileserver to store ripped movies, cds, etc on, to be 
used also as a home media center connected to tv. i'm going to use 1TB 
drives and was wondering if i should stick with ufs, or migrate to zfs. 
i've read about the zfs many times on the freebsd wiki, and it seems 
like a good choice. looking for pros and cons of each.

thanks,
Michael
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Re: fileserver questions

2008-08-28 Thread craig001
 Hello All,
 I am building a fileserver to store ripped movies, cds, etc on, to be
 used also as a home media center connected to tv. i'm going to use 1TB
 drives and was wondering if i should stick with ufs, or migrate to zfs.
 i've read about the zfs many times on the freebsd wiki, and it seems
 like a good choice. looking for pros and cons of each.
 thanks,
 Michael
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Hi Michael

I personally would consider zfs on freeBSD as unstable/experimental on
everything apart from AMD64's with loads of RAM to spare.  I have tried tuning
as per wiki on sparc64 and i386 compatible servers but still hit problems and
erratic kernel hangs.  My advise -- stick to UFS wrapped in goem goodness.

/Craig



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Re: fileserver questions

2008-08-28 Thread Wojciech Puchar

Hello All,
I am building a fileserver to store ripped movies, cds, etc on, to be used
also as a home media center connected to tv. i'm going to use 1TB drives and


UFS works perfect on my 6*500GB gstriped volume. RAID5 will be OK but for 
large files, for small files writes will be suboptimal (but not reads)

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Re: fileserver questions

2008-08-28 Thread Wojciech Puchar

I personally would consider zfs on freeBSD as unstable/experimental on
everything apart from AMD64's with loads of RAM to spare.  I have tried tuning


for large files UFS offers near-raw performance.
it can't be much better.

it can be less efficient on concurrent operations because MAXBSIZE is 
128KB on FreeBSD.


i don't know why it's still that small!

i changed

#define MAXPHYS (128 * 1024)   /* max raw I/O transfer size */

to

#define MAXPHYS (1024 * 1024)   /* max raw I/O transfer size */


on EVERY machine i own (except those having 128MB RAM) and it works fine, 
while there are huge difference.


you WILL saturade gigabit ethernet port with just 2 gstriped drives 
and many concurrent users fetching files.


make sure gstripe use huge stripes not small (like 256MB), to speed up 
multiple concurrent access instead of single linear read speed.

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