tinderd umount problem

[Philip M. Gollucci]

Ion-Mihai Tetcu wrote:
> Hi,
> 
> 
> On the QAT-to-be server which has 8GB RAM of which I want to take
> advantage of, I have the following modification of scripts/tinderd:
> 
>         if [ -n "${BUILD}" -a -n "${PORT}" -a -n "${ID}" ] ; then
> +
> +        umount ${pb}/${BUILD} && \
> +        mdconfig -d -u 0
Yeah, I see this too.  umount -f seems to help.


> +        mdmfs -s 11000m -m 1 -S -o async -o noatime md0 ${pb}/${BUILD} || \
> +        exit 666
>         
> From time to time tinderd will exit because:
> umount: unmount of /usr/local/tinderbox/7-STABLE-FPT-NPD failed: Device busy
> mdmfs: mdconfig (attach) exited with error code 1
> 
> At this point some of the files systems mounted on top of my md device
> aren't yet unmounted:
> /dev/md0        10G    253M     10G     2%    /usr/local/tinderbox/7-STABLE-FPT-NPD
> devfs          1.0K    1.0K      0B   100%    /usr/local/tinderbox/7-STABLE-FPT-NPD/dev
> or
> /dev/md0 on /usr/local/tinderbox/7-STABLE-FPT-NPD (ufs, asynchronous, local, noatime)
> /usr/local/tinderbox/ccache/7-STABLE-FPT-NPD on /usr/local/tinderbox/7-STABLE-FPT-NPD/ccache (nullfs, local)
> 
> This seems to happen especially while the queue contains small ports
> like the myriad of p5 ports from devel/. On thing to note is that I
> have TINDERD_SLEEPTIME set to 15 seconds.
> 
> Making it sleep for 2 seconds before unmounting, doesn't seem to help;
> For now I don't make it exit if umount fails, does anyone have a better
> idea?
> 
> 
> I'm using this approach because mdmfs and friends don't seem to really
> free the memory, after building enough ports 4-5GB of swap will be used
> even when a df shows /usr/local/tinderbox/7-STABLE-FPT-NPD empty.
> 
> 
> Thanks,
> 
> 
> 
> ------------------------------------------------------------------------
> 
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Philip M. Gollucci (pgollucci at p6m7g8.com) c: 703.336.9354
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