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mobyconfig: on Hyper-V connect to the db over AF_HYPERV

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We detect Hyper-V by the presence of /sys/bus/vmbus and then run the
/sbin/9pmount-vsock command to establish a socket connection and then
pass the fd to /bin/mount

This patch also hard-codes the database directory

  com.docker.driver.amd64-linux

since we can't use the kernel commandline on Hyper-V hosts. It would
probably be better to expose a generic directory name ( / ?) on all
platforms and configure the datbase to store each VM's configuration
in a different directory.

Signed-off-by: David Scott <dave.scott@docker.com>
This commit is contained in:
David Scott 2016-05-15 18:17:55 +01:00
parent 49ca65ede8
commit 129f7836fd
1 changed files with 7 additions and 8 deletions
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15
alpine/packages/mobyconfig/mobyconfig
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@ -12,16 +12,15 @@ then
exit 1
fi
if ! cat /proc/cmdline | grep -q 'com.docker.database'
then
printf "Could not find database configuration information\n" 1>&2
exit 1
fi
if [ ! -d /Database ]
then
mkdir -p /Database
mount -t 9p -o trans=virtio,dfltuid=1001,dfltgid=50,version=9p2000 db /Database
if [ -d /sys/bus/vmbus ]; then
# Running on a Hyper-V hypervisor
/sbin/9pmount-vsock listen db /Database
else
mount -t 9p -o trans=virtio,dfltuid=1001,dfltgid=50,version=9p2000 db /Database
fi
if [ $? -ne 0 ]
then
rm -rf /Database
@ -30,7 +29,7 @@ then
fi
fi
DATABASE="$(cat /proc/cmdline | sed -e 's/.*com.docker.database="//' -e 's/".*//')"
DATABASE="com.docker.driver.amd64-linux"
BASE="/Database/branch/master/ro/${DATABASE}"
KEY=$(echo $2 | sed 's@^/@@')