[OpenAFS] solaris 10 versions supporting inode fileservers
David R Boldt
dboldt@usgs.gov
Wed, 3 Jun 2009 16:56:17 -0400
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The following patch to 1.4.10 has been running on our production
fileservers now for 7 days, both namei and inode. Not a single volume
offline issue during this interval.
STABLE14-background-fsync-consistency-issues-20090522
-- David Boldt
<dboldt@usgs.gov>
"The reverse side also has a reverse side."
--Japanese Proverb
From:
David R Boldt <dboldt@usgs.gov>
To:
"Bryan Howard" <bryan@alumni.caltech.edu>
Cc:
openafs-info@openafs.org
Date:
05/15/2009 02:09 PM
Subject:
Re: [OpenAFS] solaris 10 versions supporting inode fileservers
Sent by:
openafs-info-admin@openafs.org
"oops"; yes!
From:
"Bryan Howard" <bryan@alumni.caltech.edu>
To:
"David R Boldt" <dboldt@usgs.gov>
Cc:
openafs-info@openafs.org
Date:
05/15/2009 01:01 PM
Subject:
Re: [OpenAFS] solaris 10 versions supporting inode fileservers
David R Boldt wrote:
>> > Both of the volumes most frequently impacted have content
>> > completely rewritten roughly every 20 minutes while being on
>> > an automated replication schedule of 15 minutes. One of them
>> > 25MB, the other 95MB, both at about 80% quota.
>>
>> How log does the replication take?
>
> We replicate to California, South Dakota and Virginia, averaging
> 18MB/Min (empirically determined replication velocity).
> So about 65 sec and 155 sec, respectively.
David, something doesn't add up there. Shouldn't that be
about 65 sec and 255 sec respectively?
{Bryan}
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<br><font size=2 face="sans-serif">The following patch to 1.4.10 has been
running on our production</font>
<br><font size=2 face="sans-serif">fileservers now for 7 days, both namei
and inode. Not a single volume</font>
<br><font size=2 face="sans-serif">offline issue during this interval.</font>
<br><font size=2 face="sans-serif"> </font><tt><font size=2>STABLE14-background-fsync-consistency-issues-20090522</font></tt>
<br><font size=2 face="sans-serif"><br>
<br>
--
David Boldt<br>
<dboldt@usgs.gov><br>
<br>
<br>
"The reverse side also has a reverse side."<br>
--Japanese Proverb<br>
<br>
</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">David R Boldt <dboldt@usgs.gov></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">"Bryan Howard" <bryan@alumni.caltech.edu></font>
<tr>
<td valign=top><font size=1 color=#5f5f5f face="sans-serif">Cc:</font>
<td><font size=1 face="sans-serif">openafs-info@openafs.org</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">05/15/2009 02:09 PM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [OpenAFS] solaris 10 versions supporting
inode fileservers</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">openafs-info-admin@openafs.org</font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="sans-serif"><br>
"oops"; yes!<br>
</font><font size=3><br>
<br>
<br>
</font>
<table width=100%>
<tr valign=top>
<td width=13%><font size=1 color=#5f5f5f face="sans-serif">From:</font><font size=3>
</font>
<td width=86%><font size=1 face="sans-serif">"Bryan Howard" <bryan@alumni.caltech.edu></font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">"David R Boldt" <dboldt@usgs.gov></font><font size=3>
</font>
<tr>
<td valign=top><font size=1 color=#5f5f5f face="sans-serif">Cc:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">openafs-info@openafs.org</font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">05/15/2009 01:01 PM</font><font size=3>
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font><font size=3>
</font>
<td><font size=1 face="sans-serif">Re: [OpenAFS] solaris 10 versions supporting
inode fileservers</font></table>
<br><font size=3><br>
</font>
<hr noshade><font size=3><br>
<br>
</font><tt><font size=2><br>
David R Boldt wrote:<br>
>> > Both of the volumes most frequently impacted have content<br>
>> > completely rewritten roughly every 20 minutes while being
on<br>
>> > an automated replication schedule of 15 minutes. One of them<br>
>> > 25MB, the other 95MB, both at about 80% quota.<br>
>><br>
>> How log does the replication take?<br>
><br>
> We replicate to California, South Dakota and Virginia, averaging<br>
> 18MB/Min (empirically determined replication velocity).<br>
> So about 65 sec and 155 sec, respectively.<br>
<br>
David, something doesn't add up there. Shouldn't that be<br>
about 65 sec and 255 sec respectively?<br>
<br>
{Bryan}<br>
</font></tt><font size=3><br>
<br>
</font>
<br>
<br>
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