Re: lost files/dirs without reboot

[Thomas Klausner <tk%giga.or.at@localhost>]

Hi Greg!

Thanks for your datapoint.

On Wed, Jan 07, 2015 at 12:24:18PM -0500, Greg Troxel wrote:
> I have had some lossage that might be similar.  But it may also be that
> my missing files (and wrong contents of files) are associated with
> crashes.  Lately, I have not been experiencing corruption or crashes.

I'm used to having incorrect file data inside files when I have
crashes (with WAPBL). I don't like it, but I've seen it.

What's new for me here is that there was no crash, not even a reboot,
and directories vanished so that even fsck doesn't find them. Well,
there was activity on the file system after I noticed them missing, so
perhaps the inodes themselves were reused, but what about the contents
of the directories? It doesn't make sense to me.

> This was with netbsd-5 and then netbsd-6.  In my case, I suspect bad
> hardware; I replaced the disk which seemed to help but not fix it, and
> because memtest failed replaced the RAM, but the system with the new RAM
> also fails memtest.  So I question my motherboard/cpu and power supply.

My bulk builds on this hardware continue to look reasonable, I have
ECC RAM (not that this is monitored by NetBSD, but still) and the
whole hardware isn't that old (<2 years).
 Thomas