Someone needs to take on all the affected systems, PAM, users etc to find a fix.
In redhat this has been an open issue since 2013. If anybody sees this hopefully it will direct interested parties to places where other people are talking about the same issue. This also becomes an issue in Docker containers, where user IDs are large. Great way to fill up your docker image with junk. https://bugzilla.redhat.com/show_bug.cgi?id=951564 ** Bug watch added: Red Hat Bugzilla #951564 https://bugzilla.redhat.com/show_bug.cgi?id=951564 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/1707645 Title: system with high numbered uids has huge sparse /var/log/lastlog Status in pam package in Ubuntu: Confirmed Status in shadow package in Ubuntu: Confirmed Status in util-linux package in Ubuntu: Confirmed Bug description: I was investigating the use of a single high UID user (ie, 2000000000) and discovered that /var/log/lastlog grew to an enormously large sparse file: $ ls -lh /var/log/lastlog -rw-rw-r-- 1 root utmp 544G Jul 27 12:35 /var/log/lastlog The file is actually quite small though: $ ls -lh --size /var/log/lastlog 56K -rw-rw-r-- 1 root utmp 544G Jul 27 12:35 /var/log/lastlog On a standalone system, this is possibly not a problem since it is highly unlikely that a system will have 2 billion users, but this is confirmed to wreak havoc on rsync backups. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/1707645/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
