[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I've not seen this issue in quite a long time at least on bionic/focal, so will tentatively mark it as fix released. If someone still hits this, please tell us on what release and we'll add some SRU tasks. ** Changed in: binfmt-support (Ubuntu) Status: Confirmed => Fix Released ** Changed in: systemd (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Fix Released Status in systemd package in Ubuntu: Fix Released Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
This worked on my xenial host to unwedge the trusty containers: sudo service binfmt-support restart -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Forcing a reload of the LPAR brings the system back online with juju, lxd, and df happy again. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
2c - just hit this myself on xenail s390x with a soaking openstack-on- lxd installation. masking proc-sys-fs-binfmt_misc.automount seemed to be a bad idea... systemd is in a bad state.. ubuntu@zs93kvi:~$ systemctl -a | grep binfmt proc-sys-fs-binfmt_misc.automount loadedactive running Arbitrary Executable File Formats File System Automount Point proc-sys-fs-binfmt_misc.mount loadedinactive dead Arbitrary Executable File Formats File System systemd-binfmt.service loadedinactive dead Set Up Additional Binary Formats ubuntu@zs93kvi:~$ sudo systemctl mask proc-sys-fs-binfmt_misc.automount Created symlink from /etc/systemd/system/proc-sys-fs-binfmt_misc.automount to /dev/null. ubuntu@zs93kvi:~$ Broadcast message from systemd-journald@zs93kvi (Fri 2017-05-05 10:25:46 EDT): systemd[1]: Caught , dumped core as pid 23484. Broadcast message from systemd-journald@zs93kvi (Fri 2017-05-05 10:25:46 EDT): systemd[1]: Freezing execution. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
For any poor soul who wanders here, here is the best known workaround for this issue I've seen to date: 22-09-2016 15:23:18 < stgraber!~stgraber@ubuntu/member/stgraber: cmars: if you mask (systemctl mask) the systemd units related to binfmt (systemctl -a | grep binfmt) and reboot, then the problem is gone for good. This is related to systemd's use of automount and not to binfmt- misc (which just ships a bunch of binfmt hooks) FYI, I think this will disable binfmt. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I apt purge'ed binfmt-support from my system and I'm still able to comment here :) We'll see if this fixes the issue. If it does, why was it even installed on my system by default to begin with? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Still seeing this on xenial enough that I've written a script to perform the umounting when LXD gets stuck. Do I even need binfmt_misc on my system? Can I just remove it or would that break something? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
To continue my previous comment... It is reproducible with : binfmt-support (2.1.6-1) systemd(229-4ubuntu6) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I don't have the error "Too many levels of symbolic links" when doing an
"ls" command but I do have a problem using "df" on Xenial after
installing Openstack with lxd using "conjure-up"
"df" works fine, but after a reboot, it hangs.
A "strace df" shows that it hangs at doing :
..
stat("/sys/fs/cgroup/memory", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
stat("/sys/fs/cgroup/hugetlb", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
stat("/sys/fs/cgroup/cpuset", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
stat("/proc/sys/fs/binfmt_misc",
$ systemctl status proc-sys-fs-binfmt_misc.mount
● proc-sys-fs-binfmt_misc.mount - Arbitrary Executable File Formats File System
Loaded: loaded (/lib/systemd/system/proc-sys-fs-binfmt_misc.mount; static;
vendor preset: enabled)
Active: inactive (dead) since Sat 2016-06-25 16:54:21 EDT; 9min ago
Where: /proc/sys/fs/binfmt_misc
What: binfmt_misc
Docs: https://www.kernel.org/doc/Documentation/binfmt_misc.txt
http://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
Process: 6247 ExecMount=/bin/mount binfmt_misc /proc/sys/fs/binfmt_misc -t
binfmt_misc (code=exited, status=0/SUCCESS)
Jun 25 16:54:21 systemd[1]: Mounting Arbitrary Executable File Formats
File System...
Jun 25 16:54:21 systemd[1]: Mounted Arbitrary Executable File Formats
File System.
Jun 25 16:54:22 systemd[1]: proc-sys-fs-binfmt_misc.mount: Start request
repeated too quickly.
Jun 25 16:54:22 systemd[1]: Failed to mount Arbitrary Executable File
Formats File System.
My workaround is to perform the following command at every reboot :
$ sudo dpkg-reconfigure binfmt-support
Eric
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https://bugs.launchpad.net/bugs/1555760
Title:
Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Status in binfmt-support package in Ubuntu:
Confirmed
Status in systemd package in Ubuntu:
Incomplete
Bug description:
At first I thought this was an LXD issue, but it turns out the issue
is in systemd
https://github.com/lxc/lxd/issues/1727#issuecomment-194416558
ls -l /proc/sys/fs/binfmt_misc fails with error:
Too many levels of symbolic links
I restarted binfmt manually by running:
sudo /usr/sbin/update-binfmts --disable
sudo /usr/sbin/update-binfmts --enable
I think using systemd to do this would have also worked:
sudo service binfmt-support restart
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+subscriptions
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[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
We'd have to find a way to reproduce it and find what's actually causing it before we have any chance of fixing it. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
When is this going to be fixed upstream? I'm having to remount on the host and restart containers quite often. I can't imagine this will be a good user experience for new LXD users on xenial. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
That redhat bug shows a similar end result though I doubt the cause is the same in Ubuntu's case. We wouldn't see such random occurrences of the bug if it was something as simple as a package shipping a completely broken binfmt snippet. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Just found this report too https://bugzilla.redhat.com/show_bug.cgi?id=986339 ** Bug watch added: Red Hat Bugzilla #986339 https://bugzilla.redhat.com/show_bug.cgi?id=986339 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I'm also affected by this bug. Host: Ubuntu Xenial amd64 (all updates installed) Containers: Multiple xenial containers, one privileged Trusty container. Affected container: Unprivileged Trusty container (privileged works fine). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
@cmars Note that the too many levels of symlink is on the host, not in the container and is the reason why you needed to do the umount and remount. In fact, your log file says you did get that error: lxc 20160331183429.245 ERRORlxc_utils - utils.c:safe_mount:1692 - Too many levels of symbolic links - Failed to mount /proc/sys/fs/binfmt_misc onto /usr/lib/x86_64-linux-gnu/lxc/proc/sys/fs/binfmt_misc -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I'm not seeing the symbolic links error, but I am seeing this when trying to start a trusty container on xenial: https://github.com/lxc/lxd/issues/1836 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: binfmt-support (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I tried starting stopping trusty, wily and xenial containers, none of that triggers it. What's odd though is that every report I've seen so far, show no binfmt mounted, just the autofs. But LXC itself accesses the path so should have triggered autofs for the previous container startups. So either this only happens before the first container starts, or something is unmounting the real binfmt mount. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Not having much success reproducing this on a clean machine. In the mean time, I figured I'd fix my laptop and try to see what changes after a restart: root@castiana:~# ls -lh /proc/sys/fs/binfmt_misc/ ls: cannot access '/proc/sys/fs/binfmt_misc/': Too many levels of symbolic links root@castiana:~# cat /proc/mounts | grep binfmt systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0 root@castiana:~# systemctl restart proc-sys-fs-binfmt_misc.automount root@castiana:~# cat /proc/mounts | grep binfmt systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0 root@castiana:~# ls -lh /proc/sys/fs/binfmt_misc/ total 0 -rw-r--r-- 1 root root 0 Mar 11 00:56 python2.7 -rw-r--r-- 1 root root 0 Mar 11 00:56 python3.5 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-aarch64 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-alpha -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-arm -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-armeb -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-cris -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-m68k -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-microblaze -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-mips -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-mips64 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-mips64el -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-mipsel -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-ppc -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-ppc64 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-ppc64abi32 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-ppc64le -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-s390x -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-sh4 -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-sh4eb -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-sparc -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-sparc32plus -rw-r--r-- 1 root root 0 Mar 11 00:56 qemu-sparc64 --w--- 1 root root 0 Mar 11 00:56 register -rw-r--r-- 1 root root 0 Mar 11 00:56 status root@castiana:~# So as far as one can tell from the kernel, nothing changed... -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
stgraber@dakara:~$ rssh castiana.lan.mtl root@castiana:~# ls -lh /proc/sys/fs/binfmt_misc ls: cannot open directory '/proc/sys/fs/binfmt_misc': Too many levels of symbolic links root@castiana:~# cat /proc/mounts | grep binfmt systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0 root@castiana:~# systemctl -a | grep binfmt proc-sys-fs-binfmt_misc.automount loadedactive running Arbitrary Executable File Formats File System Automount Point proc-sys-fs-binfmt_misc.mount loadedinactive dead Arbitrary Executable File Formats File System binfmt-support.service loadedactive exitedEnable support for additional executable binary formats systemd-binfmt.service loadedinactive dead Set Up Additional Binary Formats root@castiana:~# -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
The issue isn't inside a container, for that matter lxd is completely irrelevant here. We're seeing that weird symlink loop happen randomly on xenial machines. Normal users likely won't notice it though as they don't use that mountpoint, LXC users do though as LXC bind-mounts it into the container which fails miserably when it's an infinite loop of symlinks. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
root@castiana:~# systemctl status proc-sys-fs-binfmt_misc.mount ● proc-sys-fs-binfmt_misc.mount - Arbitrary Executable File Formats File System Loaded: loaded (/lib/systemd/system/proc-sys-fs-binfmt_misc.mount; static; vendor preset: enabled) Active: inactive (dead) since Sat 2016-03-12 13:21:58 EST; 3 days ago Where: /proc/sys/fs/binfmt_misc What: binfmt_misc Docs: https://www.kernel.org/doc/Documentation/binfmt_misc.txt http://www.freedesktop.org/wiki/Software/systemd/APIFileSystems Mar 11 00:56:08 castiana systemd[1]: Mounting Arbitrary Executable File Formats File System... Mar 11 00:56:08 castiana systemd[1]: Mounted Arbitrary Executable File Formats File System. root@castiana:~# -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Just tested a dozen Xenial systems I have around and only found the issue on one, my laptop today: root@castiana:~# ls -lh /proc/sys/fs/binfmt_misc ls: cannot open directory '/proc/sys/fs/binfmt_misc': Too many levels of symbolic links root@castiana:~# -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I'm trying to get a system that doesn't even have lxc installed to get into the issue. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1555760 Title: Too many levels of symbolic links /proc/sys/fs/binfmt_misc Status in binfmt-support package in Ubuntu: New Status in systemd package in Ubuntu: Incomplete Bug description: At first I thought this was an LXD issue, but it turns out the issue is in systemd https://github.com/lxc/lxd/issues/1727#issuecomment-194416558 ls -l /proc/sys/fs/binfmt_misc fails with error: Too many levels of symbolic links I restarted binfmt manually by running: sudo /usr/sbin/update-binfmts --disable sudo /usr/sbin/update-binfmts --enable I think using systemd to do this would have also worked: sudo service binfmt-support restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+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
[Touch-packages] [Bug 1555760] Re: Too many levels of symbolic links /proc/sys/fs/binfmt_misc
I tried to reproduce this with the standard images.linuxcontainers.org
trusty container image, on both a wily and a xenial host, but this
doesn't happen with obvious steps (otherwise we would have noticed this
much earlier already).
>From the github issue I take it you are using Ubuntu wily -- which lxd
package version do you use? The 0.20-0ubuntu4.1 shipped in Wily or some
backport? I tried the wily version and that does not even work any more
("error: json: cannot unmarshal string into Go value of type int64" when
trying to list or launch from images:), and there's no newer version in
wily-backports.
How exactly did you create the container?
How often does this happen, under the same circumstances? Is this a race
condition which only happens sometimes, or is this always reproducible?
Can you reproduce this with running
sudo systemctl stop proc-sys-fs-binfmt_misc.mount
lxc launch [...]
several times? Stopping proc-sys-fs-binfmt_misc.mount will stop the
actual mount and go back to systemd providing a "proxy" mount until the
first access.
Please give me the output of "systemctl status proc-sys-fs-
binfmt_misc.mount" and "mount | grep binfmt" before and after the failed
"lxc launch".
Does it always work after the first failure and after
/proc/sys/fs/binfmt_misc actually gets mounted?
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1555760
Title:
Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Status in binfmt-support package in Ubuntu:
New
Status in systemd package in Ubuntu:
Incomplete
Bug description:
At first I thought this was an LXD issue, but it turns out the issue
is in systemd
https://github.com/lxc/lxd/issues/1727#issuecomment-194416558
ls -l /proc/sys/fs/binfmt_misc fails with error:
Too many levels of symbolic links
I restarted binfmt manually by running:
sudo /usr/sbin/update-binfmts --disable
sudo /usr/sbin/update-binfmts --enable
I think using systemd to do this would have also worked:
sudo service binfmt-support restart
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+subscriptions
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