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Grex > Oldcoop > #62: Disk Quotas on the New Grex Machine | |
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| Author |
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gelinas
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Disk Quotas on the New Grex Machine
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Dec 30 06:41 UTC 2003 |
On the new grex machine, we will have larger disks for the "user"
partitions. The OS will also be able to enforce quotas directly, without
staff intervention. Right now, the plans are to use the quota system to
share the available disk-space equitably.
The quota system has three limits: a 'soft' limit, which generates a
warning, a 'hard' limit which cannot be exceeded, and a 'grace period'
after which the 'soft' limit becomes a 'hard' limit.
When the 'hard' limit is reached, no new files can be created. (If I
remember correctly, existing files cannot be written to, either.)
The 'grace period' takes effect when the 'soft' limit is exceeded.
If files are not removed before the grace period expires, the soft limit
becomes the hard limit, and no new files can be created.
The questions to be answered are:
What should the soft limit be?
What should the hard limit be?
What should the grace period be?
Another question might be:
Should the hard limit and soft limit be the same,
eliminating the grace period?
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| 73 responses total. |
gelinas
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response 1 of 73:
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Dec 30 06:49 UTC 2003 |
Here are my answsers to the questions, as a starting point for discussion:
2 megabytes
3 megabytes
7 days
Obviously, I don't think the soft and hard limits should be the same.
I recommend upping the quota from one megabyte to two simply because
we'll have the space.
The three-megabyte hard limit will eliminate most of the current lot of
space-wasters on grex.
The grace period will allow people the time to figure out what to do with
their excess files before they can't do anything. Seven days should be
enough time, especially since they will be warned as soon as they exceed
the soft limit.
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willcome
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response 2 of 73:
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Dec 30 07:58 UTC 2003 |
Does it really matter? The way information is these days, two megabytes isn't
really any more substantial than one megabyte; and, the way time flows these
days, seven days isn't any different in substrate than six.
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sholmes
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response 3 of 73:
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Dec 30 08:10 UTC 2003 |
7 days grace period looks short , like when you are travelling and not
accessing grex. And hwo do we get notified that we have crossed the soft limit
? mail ?
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mary
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response 4 of 73:
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Dec 30 12:20 UTC 2003 |
By increasing disk space over what's allowed now, will we be
encouraging storage of graphic files?
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gelinas
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response 5 of 73:
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Dec 30 13:35 UTC 2003 |
Re #3: You exceed quota by creating a file, writing to a file, or moving
a file onto grex; it is an _interactive_ process, with immediate feedback.
The systems I've used with quotas enabled also informed me of the "problem"
each time I logged in.
Re #4: Most of what I see is many (relatively) little text files. And tar
files moved in from outside. Others may see something different.
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