My original questions was:
> Dear Managers,
>
> Is there an advfs command equivalent to the tunefs command.
>
> I wish to change the minfree from 10% to 5% so there is a little be
> more space free before the system
> moans
Dr. Tom replied:
On an AdvFS file system, there is no "minfree" at all -- the default is
to allow any user to consume 100% of the available space.
There is a way to specify, per fileset, a "hard" space limit beyond
which a non-privileged (i.e., not root) user can not allocate more
space, but this
is NOT done by default.
Tom
GavinK replied:
No, they use completely different algorithms. There is no minfree
concept with advfs. The main usage of the 10% reserve was disk
performance; when the true usage is > 90%, finding a new disk block is
300% slower than below 90% on a ufs.
advfs does not suffer from the same problem, so the entire available
space is made accessible.
And finally, Alan responded with:
Yes and no. There are commands to change attributes of volumes,
filesets and files; chvol, chfset and chfile. The manual pages for
these command will describe what they control. However, AdvFS is a
completely different file system implementation than UFS and doesn't
have the same tuneable characteristics. Notably, it doesn't have a
"minfree" parameter.
So in summary, there is no equivalent advfs command for tunefs.
Thanks for the replies.
Simon.Millard_at_barclays.co.uk
Address Telephone
CAS - GES/Open Systems Support External: (01202) 601155 ext 2417
Barclays Technology Services Internal: C/W 7-4160-2417
Poole Computer Centre Fax: (01202) 642429
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Poole, Dorset
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Received on Thu Sep 24 1998 - 14:29:40 NZST