[OpenAFS] AFS questions
Jeffrey Altman
jaltman@your-file-system.com
Sat, 18 Feb 2012 10:40:58 -0500
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On 2/10/2012 1:54 AM, yanqitop wrote:
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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<div>Dear openafs&jaltman,</div>
<div>=C2=A0=C2=A0=C2=A0 Hello,I have=C2=A0some questions look=
ing forward to your
replay</div>
<div>1.=C2=A0Why is the AFS client always no respones?</div>
</div>
</div>
</div>
</blockquote>
<br>
No responses to which requests?=C2=A0=C2=A0 Can you provide an exampl=
e?<br>
<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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0, 0); font-size: 14px;">
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rgb(0, 0, 0); font-size: 14px;">
<div>2.The client installed win7 OS and AFS,why the
mang=C2=A0klogs process takes about 100percent of CPU cause=
system down?</div>
</div>
</div>
</div>
</blockquote>
<br>
You are probably referring the to the thundering herd problem that
was fixed in 1.7.6.<br>
<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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rgb(0, 0, 0); font-size: 14px;">
<div>
<div>3. How to set up token use time, whether expired
automatic without use in a period?</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
The token expires when its valid lifetime is over.=C2=A0 The valid
lifetime is set by the Kerberos KDC to be the smaller of the
requested time from the client or the maximum valid lifetime
configured in the KDC database.<br>
<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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rgb(0, 0, 0); font-size: 14px;">
<div>
<div>4. Clients have a file synchronized to the server=EF=BC=
=8Chow
to determine the file=C2=A0synchronous=C2=A0completion ti=
me?</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
AFS does not measure this for you.=C2=A0=C2=A0 <br>
<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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0, 0); font-size: 14px;">
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rgb(0, 0, 0); font-size: 14px;">
<div>
<div>5. Use=C2=A0the=C2=A0command afs_config display AFS Cl=
ient
Configuration,set up server preferences add ip address,</=
div>
<div>=C2=A0=C2=A0=C2=A0=C2=A0 why the ip address=C2=A0disap=
pear=C2=A0automatically after
a period of time?</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
The AFS Client Configuration tool is deprecated because it is out of
date and unreliable.=C2=A0 That is why it is not installed by default=
=2E=C2=A0
There is no replacement.=C2=A0 This is documented in the OpenAFS for
Windows Release Notes<br>
<br>
=C2=A0 Start Menu->Programs->OpenAFS->Documentation<br>
<br>
Server preferences configured by afs_config are identical to server
preferences configured by "fs setserverprefs".<br>
<br>
=C2=A0 <a class=3D"moz-txt-link-freetext" href=3D"http://docs.openafs=
=2Eorg/Reference/1/fs_setserverprefs.html">http://docs.openafs.org/Refere=
nce/1/fs_setserverprefs.html</a><br>
<br>
They are only valid until the afsd_service halts.<br>
<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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14px; font-family: arial;">
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0, 0); font-size: 14px;">
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rgb(0, 0, 0); font-size: 14px;">
<div>
<div>6. If=C2=A0the=C2=A0ip address set up wrong ,how to de=
lete
or=C2=A0modify?</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
There is no method to remove a server preference.<br>
<blockquote
cite=3D"mid:38b0d6f8.1aa45.135660a7ab3.Coremail.yanqitop@126.com"
type=3D"cite">
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0, 0); font-size: 14px;">
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rgb(0, 0, 0); font-size: 14px;">
<div>
<div>7. How to change the cache files size on the 1.7
version AFS?</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
See the "CacheSize" registry parameter in Appendix A of the Release
Notes.<br>
<br>
<br>
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