[OpenAFS] Home directory unavalable at certain times.
Fredrik Engström
fredrik.engstrom@su.se
Thu, 19 Apr 2012 12:05:46 +0000
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Hi,
When users log in at 11 they get access denied when they try to open the ho=
me directory. If you log in twenty minutes later you will not have this iss=
ue and if you log in before eleven you will also not notice anything.
The logs mention that a certain volume is unavailable prior to this issue:
"Server 77.238.35.9 reported volume 536870955 in cell su.se as offline"
That's it. Commands like fs checkv and fs checkservers while the error is i=
n progress does not show anything out of the ordinary. Now here's the funny=
thing: that specific volume is released every five minutes and is availabl=
e as read only on four different servers and one read/write on one server. =
The error in the log is consistent down to the second with such a release. =
So why does this only happen once a day?
We have seen this only on the computers where our students access them, but=
that's not too surprising considering they log in and out extensively duri=
ng the day and as such have a higher probability to be subject to the error=
. I've seen other clients where this happens at a different time, but it is=
also only once a day and also always preceded by the volume in cell su.se =
as offline. The machines run Windows 7 SP1 and have OpenAFS 1.7.400 install=
ed. On the serverside we have 1.4. This error was discovered roughly two we=
eks ago, but we can't find anything we tampered with that relates to this a=
t that time.
Any ideas?
Mvh
Fredrik Engstr=F6m
Avdelningen f=F6r IT och media
Stockholms universitet
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<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">When users log in at 11 they ge=
t access denied when they try to open the home directory. If you log in twe=
nty minutes later you will not have this issue and if you log in before ele=
ven you will also not notice anything.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The logs mention that a certain=
volume is unavailable prior to this issue:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">“Server 77.238.35.9 repor=
ted volume 536870955 in cell su.se as offline”<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">That’s it. Commands like =
<b>fs checkv</b> and
<b>fs checkservers</b> while the error is in progress does not show anythin=
g out of the ordinary. Now here’s the funny thing: that specific volu=
me is released every five minutes and is available as read only on four dif=
ferent servers and one read/write on one
server. The error in the log is consistent down to the second with such a =
release. So why does this only happen once a day?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We have seen this only on the c=
omputers where our students access them, but that’s not too surprisin=
g considering they log in and out extensively during the day and as such ha=
ve a higher probability to be subject to the
error. I’ve seen other clients where this happens at a different tim=
e, but it is also only once a day and also always preceded by the volume in=
cell su.se as offline. The machines run Windows 7 SP1 and have OpenAFS 1.7=
.400 installed. On the serverside we have
1.4. This error was discovered roughly two weeks ago, but we can’t f=
ind anything we tampered with that relates to this at that time.<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Any ideas?</span><span lang=3D"=
EN-US" style=3D"font-size:10.5pt;font-family:"Arial","sans-s=
erif";color:black;background:#EFEFEF"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:SV">Mvh<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:SV">Fredrik Engs=
tr=F6m<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:SV">Avdelningen =
f=F6r IT och media<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:SV">Stockholms u=
niversitet</span><span style=3D"mso-fareast-language:SV"><o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
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