On Jul 16, 2012, at 10:28 PM, Ryan Kubica wrote: > I've never run into this issue before (and store a lot of data) and on 64bit > hosts, but: > > a) I always compile rrdtool not use stock OS rpm
This isn't a common situation -- most people use RPMs, and that means that this is broken for most people. Also we are using a package that bundles a binary image of rrdtool, another situation where many people won't or can't change it out. > b) It is compiled with mmap() > c) I only resize an rrdtool file when it's not being written to (my > apps write daemon does the resize in place as a task.) That's not a choice I get. This system is too critical to stop updates long enough for that to happen. (although I have been digging around in the code to see if there is any locking mechanism that rrdtool will honor) > and it works for resizes just fine (just tested manually), I grew RRA 0 by 2x. > > [tmp]$ grep 1340865780 *xml > Epic_io_90.xml: <!-- 2012-06-28 06:43:00 UTC / > 1340865780 --> <row><v>9.7033939036e+04</v></row> > resize.xml: <!-- 2012-06-28 06:43:00 UTC / 1340865780 --> > <row><v>9.7033939036e+04</v></row> > > [tmp]$ grep 1340865840 *xml > Epic_io_90.xml: <!-- 2012-06-28 06:44:00 UTC / > 1340865840 --> <row><v>9.7633476991e+04</v></row> > resize.xml: <!-- 2012-06-28 06:44:00 UTC / 1340865840 --> > <row><v>9.7633476991e+04</v></row> Curious, what OS / kernel are you using? -- Jo Rhett Net Consonance : net philanthropy to improve open source and internet projects.
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