[OpenAFS] Update time loses 67 seconds on new volume
Kristen Webb
kwebb@teradactyl.com
Fri, 10 Aug 2018 14:21:19 -0600
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I found this situation at a client site and though it was worth brining up:
The client is running openafs 1.8.0-1~ppa0~ubuntu14.04.1-debian, but
I cannot yet vouch for the server versions.
This is a new volume and here are some times from vos exa
Creation Thu Aug 9 09:21:40 2018
Copy Fri Aug 10 09:58:29 2018
Backup Fri Aug 10 10:31:08 2018
Last Access Fri Aug 10 14:38:59 2018
Last Update Thu Aug 9 18:29:23 2018
Last night, our parts generator for afs took a snapshot of the vldb/file
servers
about 11:15 p.m. and reported a more recent update time for the volume on a
different file server:
Thu Aug 9 18:30:30 2018
Which is, interestingly, 67 seconds into the future.
I noted that the volume was copied this a.m. but after the parts generator
ran and
after our software noticed the discrepancy about 6:00 a.m. this morning.
I have not confirmed if the volume was copied some time earlier.
The volume is about 200GB.
I'm curious if there is a reasonable explanation for this type of behavior.
I do not recall ever catching something like this before. I am currently
mining our archive logs to see if I can find another instance.
Kris
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--------------------------------
Mr. Kristen J. Webb
Chief Technology Officer
Teradactyl LLC.
2450 Baylor Dr. S.E.
Albuquerque, New Mexico 87106
Phone: 1-505-338-6000
Email: kwebb@teradactyl.com
Web: http://www.teradactyl.com
Providers of Scalable Backup Solutions
for Unique Data Environments
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<div dir=3D"ltr">I found this situation at a client site and though it was =
worth brining up:<div><br></div><div>The client is running=C2=A0openafs 1.8=
.0-1~ppa0~ubuntu14.04.1-deb<wbr>ian, but</div><div>I cannot yet vouch for t=
he server versions.</div><div><br></div><div>This is a new volume and here =
are some times from vos exa</div><div><br></div><div><div>=C2=A0 =C2=A0 Cre=
ation=C2=A0 =C2=A0 Thu Aug=C2=A0 9 09:21:40 2018</div><div>=C2=A0 =C2=A0 Co=
py=C2=A0 =C2=A0 =C2=A0 =C2=A0 Fri Aug 10 09:58:29 2018</div><div>=C2=A0 =C2=
=A0 Backup=C2=A0 =C2=A0 =C2=A0 Fri Aug 10 10:31:08 2018</div><div>=C2=A0 =
=C2=A0 Last Access Fri Aug 10 14:38:59 2018</div><div>=C2=A0 =C2=A0 Last Up=
date Thu Aug=C2=A0 9 18:29:23 2018</div><div><br></div><div>Last night, our=
parts generator for afs took a snapshot of the vldb/file servers</div><div=
>about 11:15 p.m. and reported a more recent update time for the volume on =
a</div><div>different file server:</div><div><br></div><div><span style=3D"=
font-size:small;background-color:rgb(255,255,255);text-decoration-style:ini=
tial;text-decoration-color:initial;float:none;display:inline">Thu Aug=C2=A0=
9 18:30:30 2018</span><br></div><div><br></div><div>Which is, interestingl=
y, 67 seconds into the future.</div><div><br></div><div>I noted that the vo=
lume was copied this a.m. but after the parts generator ran and</div><div>a=
fter our software noticed the discrepancy about 6:00 a.m. this morning.</di=
v><div><br></div><div>I have not confirmed if the volume was copied some ti=
me earlier.</div><div><br></div><div>The volume is about 200GB.</div><div><=
br></div><div>I'm curious if there is a reasonable explanation for this=
type of behavior.</div><div>I do not recall ever catching something like t=
his before.=C2=A0 I am currently</div><div>mining our archive logs to see i=
f I can find another instance.</div><div><br></div><div>Kris</div><div>=C2=
=A0</div>-- <br><div class=3D"m_8960875572221511730m_8345175475269711989gma=
il_signature"><div dir=3D"ltr"><div><div dir=3D"ltr">This message is NOT en=
crypted
<br>------------------------------<wbr>--
<br>Mr. Kristen J. Webb
<br>Chief Technology Officer
<br>Teradactyl LLC.
<br>2450 Baylor Dr. S.E.
<br>Albuquerque, New Mexico 87106
<br>Phone: 1-<span style=3D"display:inline;font-size:inherit;padding:0pt;co=
lor:rgb(80,80,80)">505-338-6000</span>
<br>Email: <a href=3D"mailto:kwebb@teradactyl.com" target=3D"_blank">kwebb@=
teradactyl.com</a>
<br>Web: <a href=3D"http://www.teradactyl.com" target=3D"_blank">http://www=
.teradactyl.com</a>
<br>
<br><img src=3D"https://drive.google.com/a/teradactyl.com/uc?id=3D1AtTRUbNs=
HoJJEO8vs4zd6D2oON5Evwq4&export=3Ddownload"><br><br>Providers of Scalab=
le Backup Solutions
<br>=C2=A0=C2=A0 for Unique Data Environments
<br>
<br>------------------------------<wbr>--
<br>NOTICE TO RECIPIENTS: Any information contained in or attached to this
<br>message is intended solely for the use of the intended recipient(s). If
<br>you are not the intended recipient of this transmittal, you are hereby
<br>notified that you received this transmittal in error, and we request
<br>that you please delete and destroy all copies and attachments in your
<br>possession, notify the sender that you have received this communication
<br>in error, and note that any review or dissemination of, or the taking o=
f
<br>any action in reliance on, this communication is expressly prohibited.
<br>
<br>
<br>Regular internet e-mail transmission cannot be guaranteed to be secure
<br>or error-free. Therefore, we do not represent that this information is
<br>complete or accurate, and it should not be relied upon as such. If you
<br>prefer to communicate with Teradactyl LLC. using secure (i.e., encrypte=
d
<br>and/or digitally signed) e-mail transmission, please notify the sender.
<br>Otherwise, you will be deemed to have consented to communicate with
<br>Teradactyl via regular internet e-mail transmission. Please note that
<br>Teradactyl reserves the right to intercept, monitor, and retain all
<br>e-mail messages (including secure e-mail messages) sent to or from its
<br>systems as permitted by applicable law
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