wzab wrote: > Investigating it, I've found, that the /tmp is now mounted (in the > /etc/init.d/mountkernfs.sh script) by default as tmpfs with capacity > of 20% of RAM, which was way too small for those tools, which place > big temporary files in /tmp.
Interesting. Thank you for pointing this out. I was unaware of the
change as well. However I had not yet been hit by it. The default
seems to have changed in Sid/Wheezy. The Squeeze default is still the
traditional one and does not use tmpfs for /tmp. As I see things by
inspection only a new install of Wheezy will see this behavior.
I think this is a significant enough change that it warrants a
NEWS.Debian item.
I do remember seeing a lot of tmpfs discussion in the debian-devel
mailing list. I am sure that a search there would reveal much
rationale behind this change.
> As I didn't need to reinstall any of my Debian systems for quite a
> long time, I don't know when this behavior has changed.
But if you have not reinstalled then this behavior should not have
changed for you. Up through Squeeze there is no tmpfs for /tmp. Only
in Sid/Wheezy do I see that the default has changed.
The package default file is:
/usr/share/initscripts/default.rcS
In the initscripts.postinst script:
if [ ! -f /etc/default/rcS ]
then
cp -p /usr/share/initscripts/default.rcS /etc/default/rcS
fi
That /usr/share/initscripts/default.rcS is only used if there isn't
already a /etc/default/rcS file in place. That will be true only
during initial system installation time. A system that is upgrading
from a previous version will already have that file and it won't be
modified. Updates to it would be the responsibility of the local
admin to perform. It shouldn't happen automatically.
> Anyway, finding of the cause and cure (which was simply setting of
> "RAMTMP" to "no" in the /etc/default/rcS ) consumed quite a long
> time...
Thank you again for mentioning this. It would have affected me in the
upcoming Wheezy release. Now that I am warned about it I can look
for it and deal with it.
Bob
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