Hi Cam,
On our hosts, 4 physical interfaces and then a bunch of bonds and
bridges taking total up to 12 entries in /etc/network/interfaces . So
contention certainly seems plausible?
My guests have actually gone back to working normally, so I likely have
mis-attributed an unrelated problem that oc
Nathan: How many interfaces or IP's are you bringing up? That error
message makes it sound like there could be a lot of contention on the
lock. Could you also get the output of `pstree | grep -B3 lockfile`
while a VM is coming up? (You'll need to attach to a free virtual
terminal using the kvm con
This fix is causing problems on Ubuntu 12.04 for me; for both KVM hosts
and KVM guests. I see a message like
lockfile creation failed: exceeded maximum number of lock attempts
On my hosts, it delays boot finishing for several minutes; while some of
my guests just never become network accessible.
This bug was fixed in the package ntp - 1:4.2.6.p5+dfsg-3ubuntu2.14.04.7
---
ntp (1:4.2.6.p5+dfsg-3ubuntu2.14.04.7) trusty; urgency=medium
* Use a single lockfile again - instead unlock the file before starting the
init script. The lock sho uld be shared - both services can't ru
This bug was fixed in the package ntp - 1:4.2.6.p3+dfsg-1ubuntu3.8
---
ntp (1:4.2.6.p3+dfsg-1ubuntu3.8) precise; urgency=medium
* Use a single lockfile again - instead unlock the file before starting the
init script. The lock sho uld be shared - both services can't run at the
I can confirm I've been running this in production and have not seen any
further issues.
** Tags removed: verification-needed
** Tags added: verification-done
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Hello Thomas, or anyone else affected,
Accepted ntp into trusty-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-
3ubuntu2.14.04.7 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. Se
Uploaded both now, thanks again!
** Changed in: ntp (Ubuntu Precise)
Status: Triaged => In Progress
** Changed in: ntp (Ubuntu Trusty)
Status: Triaged => In Progress
** Changed in: ntp (Ubuntu Precise)
Assignee: (unassigned) => Cam Cope (ccope)
** Changed in: ntp (Ubuntu Trus
** Changed in: ntp (Ubuntu Precise)
Status: New => Triaged
** Changed in: ntp (Ubuntu Trusty)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1125726
** Changed in: ntp (Ubuntu Precise)
Importance: Undecided => Medium
** Changed in: ntp (Ubuntu Trusty)
Importance: Undecided => Medium
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** Also affects: ntp (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: ntp (Ubuntu Trusty)
Importance: Undecided
Status: New
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** Description changed:
- We're seeing a race between if-up.d/ntpdate and the ntp startup script.
+ [Impact]
+ * Hardware clocks are not stepped at boot, which can prevent NTP from ever
+ syncing the clock.
+ Incorrect clocks can cause serious issues in distributed systems.
- 1) if-up.d/nt
This bug was fixed in the package ntp - 1:4.2.6.p5+dfsg-3ubuntu9
---
ntp (1:4.2.6.p5+dfsg-3ubuntu9) xenial; urgency=medium
[ Cam Cope ]
* Use a single lockfile again - instead unlock the file before starting the
init script. The lock sho uld be shared - both services can't run
Thanks Cam, I'm going to upload this to Xenial.
If you want this to be uploaded to a stable release, please provide the
required information (QA information, regression potential, etc) from
https://wiki.ubuntu.com/StableReleaseUpdates#Procedure
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** Changed in: ntp (Ubuntu)
Importance: Low => Medium
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Title:
boot-time race between /etc/network/if-up.d/ntpdate and
"/etc/in
In case it wasn't clear, my patch is supposed to be for the
debian/ntpdate.if-up file. Also, I think the priority of this bug should
be higher, it was assigned 'low' when there was no clear problem caused
by the race. Systems booting with uncorrectable clock skew can be a
serious problem.
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You
** Tags added: patch
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Title:
boot-time race between /etc/network/if-up.d/ntpdate and
"/etc/init.d/ntp start"
To manage notificat
The fix for 246203 was wrong: http://bazaar.launchpad.net/~ubuntu-
branches/ubuntu/karmic/ntp/karmic/revision/23
The issue is that the ntp init script is started inside the ntpdate ifup
script BEFORE the lock file is unlocked. That init script then blocks
because the lock is taken. The correct fix
See also
https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/288905
where I said:
The way I read "man ntpd" (on Debian wheezy), we could (should?) replace
ntpdate by
"ntpd -q"; and if we are going to run ntpd then ntpdate is unnecessary anyway.
If we have (or are going to have) ntpd, then we
Is there any danger of the rc2.d restarting ntp before if-up.d/ntpdate
script gets done starting ntpdate, causing ntpdate to fail?
Since we know that if-up.d/ntpdate will eventually start ntp, we could
define a transient 'ntp-will-start' upstart job. Have if-up.d/ntpdate
start ntp-will-start, sto
** Changed in: ntp (Ubuntu)
Importance: Undecided => Low
** Changed in: ntp (Ubuntu)
Status: New => Confirmed
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Title:
bo
Thanks Thomas.
I'm not sure what to do with this bug now though. Do you think you could
distil your problem down to a failure case that applies generally? Or
should we just leave this bug as a wishlist item to improve the
ntp/ntpdate interaction? I guess the latter would need to be forwarded
to De
We're seeing a possibly related problem on first boot, with more painful
consequences. Our install process does a puppet run in the late_command,
and then a reboot, and then another puppet run happens on boot.
In that first boot to the installed system, we're seeing ntp start once
and fail, report
Thanks Thomas.
It looks like this exists in the Ubuntu delta only, introduced in the
fix for bug 246203. If we used the same lock file, I think we'd get a
deadlock again.
Is there a specific operational problem here? The current arrangement
does seem messy, but I'm reluctant to touch it if it wor
In addition, /etc/dhcp/dhclient-exit-hooks.d/ntp is *also* getting in on
the act, doing an ntp restart when it sees ntp service information from
the DHCP server.
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