[OpenAFS] write caching differences between 1.2 and 1.4
Tue, 14 Aug 2007 18:58:40 +0200 (CEST)
On Tue, 14 Aug 2007, Derrick J Brashear wrote:
> Per our private thread, the salient point is "on linux" and not simply 1.2
> versus 1.4
Yes, sorry, I'm guilty of not checking a 1.4.4 client on Solaris before -
which behaves correctly. I also have to add that my linux build is not
pristine 1.4.4 but has a number of patches applied I pulled from CVS.
I'll check 1.4.4 as released, but this will have to wait until tomorrow.
At least I know it's not intentional now.
Thanks for caring,
> On Tue, 14 Aug 2007, Stephan.Wiesand@desy.de wrote:
>> The AFS client used to cache writes on the local disk until a file is
>> closed, but this seems to have changed?
>> Consider the following script:
>> while [ 1 = 1 ]; do
>> sleep 10
>> Now I run "script.sh >> afs12.out" on a 1.2.13 client, and "script.sh >>
>> afs14.out" on a 1.4.4 one. Except for the AFS client version, the systems
>> are identical (Scientific Linux 3, same kernel & patches, ...).
>> On any 3rd client system (version doesn't matter), I see afs14.out growing
>> by 30 bytes every 10 seconds, while afs12.out stays at size 0 until I kill
>> the script.
>> Is this change intentional? I always thought the old behaviour really helps
>> in environments with many clients? Any insights much appreciated.
>> Stephan Wiesand
>> DESY - DV -
>> Platanenallee 6
>> 15738 Zeuthen, Germany
>> OpenAFS-info mailing list
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