[OpenAFS] A few Windows clients hitting the VLDB

Jeffrey Altman jaltman@your-file-system.com
Thu, 29 Nov 2012 11:20:22 -0500


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_._AFS_IOCTL_._ files is the pioctl interface.  Pioctls are issued by
the explorer shell extensions to determine if objects are mount points
or symlinks when deciding to produce an overlay icon.  They are also
issued when a context menu is constructed and when a properties dialog
is opened.

A pioctl is not special from the perspective of volume location
information.  If a query is being sent on every file open.  You should
be able to check that, then the cache manager believes that the volume
location information requires refresh.

Please file a bug report at openafs-bugs@openafs.org.

On 11/29/2012 11:03 AM, Dan Van Der Ster wrote:
> Dear OpenAFS-Info,
>=20
> Recently we noticed lots and lots of traffic coming to our vlservers an=
d have found it to be coming from a few Windows clients. Some example tra=
ffic is shown in the P.S. -- it goes on and on without stopping. We've ob=
served it coming from Windows client versions 1.7.15, 1.7.16, and 1.7.20.=
=20
>=20
> Sitting with one of the users, we found that the traffic is generated w=
henever Explorer is open and browsing an AFS folder; when the Explorer wi=
ndow is closed, the traffic stops. The generated traffic correlates to hi=
gh CPU load in afsd_service.exe (see https://dl.dropbox.com/u/58475/image=
007.png). And using procmon from sysinternals, we found that explorer.exe=
 spins on _._AFS_IOCTL_._ (see https://dl.dropbox.com/u/58475/image004.pn=
g).
>=20
> Any idea what's going on?
>=20
> Best Regards,=20
> Dan van der Ster, CERN IT-DSS
> on behalf of the CERN AFS Admins
>=20
> P.S. Example tcpdumps...
>=20
> tcpdump -i eth0 dst port 7003 and host pcbe13987.cern.ch
> 16:36:31.006298 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#896720001 (60)
> 16:36:31.006643 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.006648 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1110169244 (100)
> 16:36:31.006693 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1695798359 (60)
> 16:36:31.006992 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.006997 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.007042 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1415608494 (100)
> 16:36:31.007046 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-367297746 (100)
> 16:36:31.007050 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.007393 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.007398 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-537643410 (100)
> 16:36:31.007401 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#651702350 (60)
> 16:36:31.007743 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.007747 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1635868663 (60)
> 16:36:31.007791 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.007891 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.008439 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.008491 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#73062445 (100)
> 16:36:31.008496 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.008500 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1063333442 (100)
> 16:36:31.008840 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1511646841 (60)
> 16:36:31.009138 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1506466357 (60)
> 16:36:31.009488 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.009493 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.009838 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.009843 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.009887 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#32481037 (100)
> 16:36:31.009892 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-502940616 (100)
> 16:36:31.010137 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.010537 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.010936 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#2063817775 (60)
> 16:36:31.011285 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-942467498 (60)
> 16:36:31.011634 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.011639 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-533154711 (100)
> 16:36:31.011984 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#519056367 (60)
> 16:36:31.011989 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.011993 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.012034 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1823299792 (100)
> 16:36:31.012334 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1187342380 (60)
> 16:36:31.012683 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.012688 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.012692 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#89585461 (100)
> 16:36:31.013033 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.013038 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.013082 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1973255886 (100)
> 16:36:31.013381 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.014480 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1356377853 (60)
> 16:36:31.014833 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1193223115 (60)
> 16:36:31.014838 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#26260738 (60)
> 16:36:31.015180 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.015186 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#970680065 (100)
> 16:36:31.015528 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.015533 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-1037112767 (100)
> 16:36:31.015880 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.015884 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.015928 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#969090833 (100)
> 16:36:31.015977 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.016377 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#1737739362 (60)
> 16:36:31.017552 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.017602 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.017606 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#971924910 (100)
> 16:36:31.018001 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:36:31.018201 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#-23838290 (60)
> 16:36:31.018206 IP pcbe13987.cern.ch.afs3-callback > afsdb1.cern.ch.afs=
3-vlserver:  rx data vldb call op#814523112 (60)
>=20
>=20
> tcpdump -i eth0 dst port 7003 and host pcithmh05-v1
> 16:44:04.365776 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#2119374991 (60)
> 16:44:04.366424 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-652751162 (60)
> 16:44:04.366874 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.366882 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#602329910 (100)
> 16:44:04.367822 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.367832 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1100025215 (100)
> 16:44:04.368271 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.369370 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.374261 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-534588431 (60)
> 16:44:04.375161 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.375169 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#1327748128 (100)
> 16:44:04.376158 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1325783088 (60)
> 16:44:04.376166 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.377258 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.377614 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#1050279245 (100)
> 16:44:04.377620 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#46775121 (60)
> 16:44:04.378605 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.378612 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.378615 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#1373955964 (100)
> 16:44:04.379453 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.384895 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#574482788 (60)
> 16:44:04.386242 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.386250 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#1288924644 (100)
> 16:44:04.386792 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1954368271 (60)
> 16:44:04.386800 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-826939 (60)
> 16:44:04.387390 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.387989 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.387997 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#749270247 (100)
> 16:44:04.388001 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.388005 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-2075996140 (100)
> 16:44:04.389537 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.389791 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.395028 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#2089827799 (60)
> 16:44:04.396327 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.396335 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#1486991406 (100)
> 16:44:04.397025 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1361796420 (60)
> 16:44:04.397032 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#590173735 (60)
> 16:44:04.397526 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.398173 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.398188 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-559108108 (100)
> 16:44:04.398191 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.398195 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#810843346 (100)
> 16:44:04.399221 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.399228 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.405312 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#907657597 (60)
> 16:44:04.406464 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.406471 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-77135190 (100)
> 16:44:04.406475 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1411314370 (60)
> 16:44:04.407109 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-623122759 (60)
> 16:44:04.407809 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.408219 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.408226 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#-1533427247 (100)
> 16:44:04.408230 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.408234 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#949525004 (100)
> 16:44:04.409756 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.409763 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx ack first 2 serial 0 reason delay (65)
> 16:44:04.415849 IP pcithmh05-v1.cern.ch.afs3-callback > afsdb1.cern.ch.=
afs3-vlserver:  rx data vldb call op#735232449 (60)
>=20
>=20
>=20
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info
>=20


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