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Not sure where this best belongs as it contains both a packaging and a
glance issue, but I'll start with glance.
The glance.postinst script has the following code snippet
if ! grep sql_connection /etc/glance/glance-registry.conf | grep -qv
"sql_connection = sqlite:////var/lib/glance/glance.sqlite"
then
su -c 'glance-manage db_sync' glance
fi
During upgrade testing we found a few problems with this part
• On api servers its legitimate not be configured as a registry server
also. On those nodes, one way to ensure that is to remove the registry
configuration file. The package upgrade respects this and doesn’t override the
removal, but the check will then bomb out if the file doesn’t exist, and the
package ends up in a partially installed state on api servers.
• The check looks for ‘sql_connection = ‘
Theoretically, we think this might match a comment which may give undesired
behaviour.
• As coded, we think the check only works for sqlite databases. Our
database is mysql and the check failed to call the db sync during postinstall.
Unfortunately, once the registry service was started it seemed to create the
image_members table, and a manual fixup by calling glance-manage db_sync
continually failed due to prior existence of the table.
We think the check needs to cover all valid databases (the ! and grep –v are
hard to read).
Maybe its enough to check for “^sql_connection = <anything>”?
It would be helpful if the database upgrade code could continue if the table
exists (as long it has the valid columns).
Here’s an admittedly ugly version of what the postinst could do:
if [ -e /etc/glance/glance-registry.conf ]
then
sql_line="`grep ^sql_connection /etc/glance/glance-registry.conf`"
if ! echo $sql_line | grep -qv "sql_connection =
sqlite:////var/lib/glance/glance.sqlite" ||
echo $sql_line | grep -q "^sql_connection = mysql://"
then
echo 'glance.postinst sync database'
logger -plocal0.warn -t glance.postinst 'glance postinstall
sync database'
su -c 'glance-manage db_sync' glance
fi
fi
** Affects: glance (Ubuntu)
Importance: Low
Status: Confirmed
--
install/upgrade questions re glance-manage db_sync
https://bugs.launchpad.net/bugs/882581
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