[SunHELP] UFS + logging on Solaris 8

[Devrim Yilmaz (Garanti Teknoloji)]

Hi friends;
Solaris Admin book says : "Due to file system overhead, the largest file
size that can be 866 GB."

regards,
dEVRim-

-----Original Message-----
From: Dale Ghent [mailto:daleg at elemental.org]
Sent: Monday, March 18, 2002 9:21 PM
To: Steve McAuley
Cc: sunhelp at sunhelp.org
Subject: Re: [SunHELP] UFS + logging on Solaris 8


On Fri, 15 Mar 2002, Steve McAuley wrote:

| Does this mean that there is a 64GB file system size limit? I'd like to
use
| ufs logging on a 400GB filesystem but something tells me that might not be
a
| good idea. Also, what happens if the file system fills up and the log
can't be
| written to? Is it then corrupted - rendering the file system an
incorherant
| jumble of ones and zeros? Any way to have multiple copies of the logs?

I believe the UFS limit is 1TB.

If your fs is larger than 64MB, then the OS just doesnt allocate more
logging area beyond that. the logging area is a scratch area... a
unstructured buffer that data is written to before it's committed to the
UFS fs (which in computer terms,is a longer process, and is therefore
prone to corruption if the system breaks in the middle of said write
process.

If a fs fills up, all write operations to the fs would fail, per the
normal situation when a fs of any size fills up. Nothing different there.

/dale
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