public/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Some hacks to support clean shutdowns of VMs that mount the Nix store

Browse Source 
ove QEMU (and other NixOS instances that use a remote filesystem like
NFS):

* Don't take down the network interfaces during shutdown.
* Don't try to unmount the Nix store.  Usually, this doesn't work
  because it's still in use, but on remote filesystems like CIFS the
  `-f' umount flag actually works.

svn path=/nixos/branches/modular-nixos/; revision=16036
This commit is contained in:
Eelco Dolstra 2009-06-24 13:33:03 +00:00
parent aa075f089e
commit 9704472d1c
2 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
modules/system/upstart-events/halt.nix
View File

@ -69,7 +69,12 @@ let
for mp in $(getMountPoints); do for mp in $(getMountPoints); do
device=$(getDevice $mp) device=$(getDevice $mp)
echo "unmounting $mp..." echo "unmounting $mp..."
if umount -f -n "$mp"; then # !!! Don't unmount /nix/store or /hostfs. This is
# a quick hack to cleanly shutdown VMs that mount
# the Nix store via CIFS. "mount -f" will actually
# work on such filesystems, which makes all commands
# needed below disappear.
if test "$mp" != /nix/store -a "$mp" != /hostfs && umount -f -n "$mp"; then
if test "$mp" != /; then tryAgain=1; fi if test "$mp" != /; then tryAgain=1; fi
else else
mount -n -o remount,ro "$mp" || true mount -n -o remount,ro "$mp" || true

8
modules/tasks/network-interfaces.nix
View File

@ -159,10 +159,10 @@ in
respawn sleep 100000 respawn sleep 100000
stop script stop script
for i in $(cd /sys/class/net && ls -d *); do #for i in $(cd /sys/class/net && ls -d *); do
echo "Taking down network device $i..." # echo "Taking down network device $i..."
${nettools}/sbin/ifconfig $i down || true # ${nettools}/sbin/ifconfig $i down || true
done #done
end script end script
''; '';
}]; }];