On Sun, 2009-11-01 at 12:03 -0500, Eric Smith wrote:
Antoine Pitrou wrote:
Adam Olsen <rhamph <at> gmail.com> writes:
Looks like an OS bug to me. Linux I'm guessing?
Yes, but only on certain boxes. I could never reproduce on my home box. RDM (David)'s buildbot is a Gentoo vserver with a reiserfs filesystem.
You'll occasionally see something similar on Windows boxes running FAT, because the timestamps stored in the filesystem have a 2 second granularity there. Not sure if this might be similar, or just a reiserfs issue.
Some years ago there was a bug where the dentry cache held timestamps more granular than those that the filesystem could represent. We saw this cause build failures which were troubling to reproduce :) I haven't seen Linux arbitrarily invent time travel so far:). The FAT rounding issue is a possibility, but I didn't think reiserfs was short that much precision. I'd check that the work area you had really was reiser, not a mounted AT partition, and if its not look up the ReiserFS precision for mtime. -Rob