[OpenAFS-devel] Some tests and questions about fs setquota

[Jeffrey Altman]

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Derrick Brashear wrote:
> On Mon, Nov 24, 2008 at 7:34 AM, Chas Williams (CONTRACTOR)
> <chas@cmf.nrl.navy.mil> wrote:
>> In message <4929C87A.9080200@rampaginggeek.com>,Jason Edgecombe writes:
>>> If we want to allow a negative quota to disable all writes, then I
>>> propose that we only allow -1. Then again, 1 is almost as effective
>>> assuming that the volume has a few files in it.
>> if you choose to go this route, then you will have a complete range of
>> negative quotas and cut the quota range in half.  using a single bit from
>> the value range is wasteful -- there is no reason for quota to be signed.

Agreed.   The only problem is that the wire protocol defines the quota
to be signed.  Changing to unsigned is a protocol change.

When we add support for 64-bit volumes, then we should change the quota
interface at the same time to support 64-bit quotas.

> Agreed. A quota of 1 should be fine for "no write": the directory
> object in an empty volume should be that big.

Agreed.

> I suppose I should try this.

It will permit the ability to write 1MB.  We could special case the
value 1 to mean do not permit the overage margin.




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