eric wrote:
# newfs -m 1 /dev/wd1h
# mount /dev/wd1h /home/users
# df -k
/dev/wd1h 257268116 92122160 152282552 38% /home
Five percent of /home would be a LOT of space that could be used for users.
Naturally, good system adminstration would want to use that space and have
the proper quotas/monitoring in place to alert when things get too close to
being full. 5% of even 10GB, IMHO, is wasted space.
I never used it, but looking at the man page, doesn't it say to use
tunefs to set this properly instead?
Also from man 8 tunefs for the -m switch I see:
-m minfree
This value specifies the percentage of space held back from nor-
mal users; the minimum free space threshold. The default value
used is 5%. This value can be set to zero; however, a factor of
up to three in throughput will be lost over the performance ob-
tained at a 5% threshold. Note that if the value is raised above
the current usage level, users will be unable to allocate files
until enough files have been deleted to get under the higher
threshold.
Specially the "a factor of up to three in throughput..." would tell me
not to play with it.
Don't get me wrong, I really don't know and never try to change the
setting, but may be you may be able to do what you want by using the
tunefs -m instead. Worth the try I think, but might be interesting to
also do tests in performance to see if the saving of space is worth the
degradation in performance the man page indicate it might have.
Hope this help some anyway...
Best regards,
Daniel
