cvs commit: src/share/man/man5 rc.conf.5 src/etc/rc.d Makefile mdconfig mdconfig2

[Dmitry Morozovsky]

On Tue, 22 Aug 2006, Kris Kennaway wrote:

KK> > > >    Use should be as easy as:
KK> > > >
KK> > > >    mdconfig_md0="-t malloc -s 10m"
KK> > 
KK> > We should consider adding "-o reserve" to malloc-backed md creation
KK> > where applicable (e.g. the md-backed /tmp creation) to avoid bogus PRs
KK> > from people who run their kernels out of memory by filling up /tmp.
KK> 
KK> Oops, I forgot they were already (correctly) fixed to use swap backing
KK> (I think).

Not yet, the default is still -M.  I had a patch for this, based on vm.nswapdev 
value, to use malloc-backed md only on swapless machines:

Index: rc.subr
===================================================================
RCS file: /home/ncvs/src/etc/rc.subr,v
retrieving revision 1.68
diff -u -r1.68 rc.subr
--- rc.subr     22 Aug 2006 11:17:28 -0000      1.68
+++ rc.subr     22 Aug 2006 14:15:36 -0000
@@ -1332,6 +1332,9 @@
        if [ -n "$3" ]; then
                flags="$3"
        fi
+       if [ `${SYSCTL_N} vm.nswapdev` = 0 ]; then
+               flags="-M $flags"
+       fi
        /sbin/mdmfs $flags -s $1 md $2
 }
 
Index: defaults/rc.conf
===================================================================
RCS file: /home/ncvs/src/etc/defaults/rc.conf,v
retrieving revision 1.294
diff -u -r1.294 rc.conf
--- defaults/rc.conf    17 Aug 2006 20:13:24 -0000      1.294
+++ defaults/rc.conf    22 Aug 2006 14:16:09 -0000
@@ -43,10 +43,10 @@
 removable_route_flush="NO" # Flush routes when removing an interface
 tmpmfs="AUTO"          # Set to YES to always create an mfs /tmp, NO to never
 tmpsize="20m"          # Size of mfs /tmp if created
-tmpmfs_flags="-S -M"   # Extra mdmfs options for the mfs /tmp
+tmpmfs_flags="-S"      # Extra mdmfs options for the mfs /tmp
 varmfs="AUTO"          # Set to YES to always create an mfs /var, NO to never
 varsize="32m"          # Size of mfs /var if created
-varmfs_flags="-S -M"   # Extra mount options for the mfs /var
+varmfs_flags="-S"      # Extra mount options for the mfs /var
 populate_var="AUTO"    # Set to YES to always (re)populate /var, NO to never
 cleanvar_enable="YES"  # Clean the /var directory
 local_startup="/usr/local/etc/rc.d /usr/X11R6/etc/rc.d" # startup script dirs.


Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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