Date: Tue, 27 Jul 2004 21:30:08 +0200 From: Jan-Espen Pettersen <sigsegv@leakingmemory.org> To: freebsd-current@freebsd.org Cc: sigsegv@leakingmemory.org Subject: out of inodes on md /tmp Message-ID: <4106AD40.5020500@leakingmemory.org>
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I ran into a problem when having a lot of small files in a memory disk
filesystem /tmp, which is now turned on by default through
/etc/defaults/rc.conf and /etc/rc.d/tmp . This caused /tmp to quickly
run out of inodes. In this case it was a cvs update over ssh that
triggered the problem.
One way to solve this is to increase the size of /tmp (this was also
required to solve my problem, since at least 130M was required for cvs
update to complete). But increasing the size of /tmp to 512M was not
enough to get a sufficient number of inodes. Therefore I suggest a
change to /etc/rc.d/tmp and /etc/defaults/rc.conf to let bytes-per-inode
be a configureable option through /etc/rc.conf
The diff I have attached to this message is what I've used for a few
days now. It seems to work for me. I don't know how many people who
actually need such an option, since this is relatively easy to work
around by other means.
from (log) messages:
Jul 24 11:34:02 endeavour kernel: pid 15026 (cvs), uid 1001 inumber 1407
on /tmp: out of inodes
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Index: etc/defaults/rc.conf
===================================================================
RCS file: /usr/ncvs/src/etc/defaults/rc.conf,v
retrieving revision 1.211
diff -u -r1.211 rc.conf
--- etc/defaults/rc.conf 18 Jul 2004 18:01:47 -0000 1.211
+++ etc/defaults/rc.conf 24 Jul 2004 10:35:47 -0000
@@ -40,6 +40,7 @@
removable_interfaces="" # Removable network interfaces for /etc/pccard_ether.
tmpmfs="AUTO" # Set to YES to always create an mfs /tmp, NO to never
tmpsize="20m" # Size of mfs /tmp if created
+tmpbpi="DEFAULT" # Bytes-per-inode of mfs /tmp if created
varmfs="AUTO" # Set to YES to always create an mfs /var, NO to never
varsize="32m" # Size of mfs /var if created
populate_var="AUTO" # Set to YES to always (re)populate /var, NO to never
Index: etc/rc.d/tmp
===================================================================
RCS file: /usr/ncvs/src/etc/rc.d/tmp,v
retrieving revision 1.32
diff -u -r1.32 tmp
--- etc/rc.d/tmp 23 Mar 2004 23:22:35 -0000 1.32
+++ etc/rc.d/tmp 24 Jul 2004 11:06:45 -0000
@@ -35,15 +35,27 @@
name="tmp"
+md_bpi=""
+
load_rc_config $name
+if [ -n "$tmpbpi" ]; then
+ case "$tmpbpi" in
+ [Dd][Ee][Ff][Aa][Uu][Ll][Tt])
+ ;;
+ *)
+ md_bpi="$tmpbpi"
+ ;;
+ esac
+fi
+
# If we do not have a writable /tmp, create a memory
# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp,
# then it should already be writable).
#
case "${tmpmfs}" in
[Yy][Ee][Ss])
- mount_md ${tmpsize} /tmp
+ mount_md ${tmpsize} /tmp ${md_bpi}
chmod 01777 /tmp
;;
[Nn][Oo])
@@ -57,7 +69,7 @@
echo "dropping into shell, ^D to continue anyway."
/bin/sh
else
- mount_md ${tmpsize} /tmp
+ mount_md ${tmpsize} /tmp ${md_bpi}
chmod 01777 /tmp
fi
fi
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