[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
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On 2016-02-25T14:04:19+00:00 Peter wrote:
This rule may be problematic:
SUBSYSTEM=="block", KERNEL!="ram*",
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}="0"
The "SYSTEMD_READY=0" will cause automatic unmount of mountpoint that is
on top of such DM device. It's even more problematic if this is used
with multipath which sets DM_UDEV_DISABLE_OTHER_RULES_FLAG in case we
have a CHANGE event that comes after DM multipath device reload when one
of the paths is down or up (see also bug #1310022).
Reply at:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/0
On 2016-02-25T19:01:04+00:00 Ryan wrote:
(In reply to Peter Rajnoha from comment #0)
> This rule may be problematic:
>
> SUBSYSTEM=="block", KERNEL!="ram*",
> ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}="0"
>
> The "SYSTEMD_READY=0" will cause automatic unmount of mountpoint that is on
> top of such DM device. It's even more problematic if this is used with
> multipath which sets DM_UDEV_DISABLE_OTHER_RULES_FLAG in case we have a
> CHANGE event that comes after DM multipath device reload when one of the
> paths is down or up (see also bug #1310022).
Hi Peter. Glad to hear that this has been identified as a problem.
Obviously I wouldn't normally edit /usr/lib/udev/rules.d/*.rules files
(I know changes will be reverted on update of systemd; perhaps it works
like systemd unit files and I could put an override file of the same
name in /etc/udev/rules.d?) but if I comment out that rule in
99-systemd.rules, is it sufficient to run `udevadm control --reload` to
avoid being bitten by this issue?
Reply at:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/1
On 2016-02-26T07:58:08+00:00 Peter wrote:
(In reply to Ryan Sawhill from comment #1)
> Hi Peter. Glad to hear that this has been identified as a problem. Obviously
> I wouldn't normally edit /usr/lib/udev/rules.d/*.rules files (I know changes
> will be reverted on update of systemd; perhaps it works like systemd unit
> files and I could put an override file of the same name in
> /etc/udev/rules.d?) but if I comment out that rule in 99-systemd.rules, is
> it sufficient to run `udevadm control --reload` to avoid being bitten by
> this issue?
Yes, you can comment out that rule for now in
/lib/udev/rules.d/99-systemd.rules and then on next systemd update, this
will be overwritten by the new rules file which will have this removed
officially.
And yes, udevadm control --reload should suffice.
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https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/2
On 2016-02-26T08:19:01+00:00 Peter wrote:
However, I missed one point - we still need to be sure that systemd
doesn't consider the device to be ready on ADD event because on ADD
event, any DM device is still not ready - it needs to be loaded with
teable and then resumed. So the rule should be:
UBSYSTEM=="block", ACTION=="add",
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}="0"
(so it checks against 'ACTION=="add"')
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https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/3
On 2016-02-26T08:33:36+00:00 Peter wrote:
*** Bug 1300453 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/4
On 2016-02-26T08:38:11+00:00 Peter wrote:
*** Bug 1310022 has been marked as a duplicate of this bug. ***
Reply at:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/5
On 2016-02-26T14:37:05+00:00 Ryan wrote:
Awesome! So to summarize for anyone following this from home, until new
systemd packages including this fix are shipped, you can protect
yourself from this issue by tweaking that line with sed:
sed -i '/DM_UDEV_DISABLE_OTHER_RULES_FLAG/s|.*|SUBSYSTEM=="block",
KERNEL!="ram*", ACTION=="add",
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}="0"|'
/usr/lib/udev/rules.d/99-systemd.rules
And reloading the rules:
udevadm control --reload
Reply at:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/comments/6
--
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
I have run for a bit now and have not seen anymore erroneous unmounts. I'll call this one fixed and verified. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
@Matt: it landed in xenial yesterday. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
Can you comment on when or if this fixed package might be pushed to the Xenial repos? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
This bug was fixed in the package systemd - 229-4ubuntu4 --- systemd (229-4ubuntu4) xenial; urgency=medium * 73-special-net-names.rules: Further refine ibmveth naming. -- Martin Pitt Tue, 12 Apr 2016 12:06:30 +0200 ** Changed in: systemd (Ubuntu) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
Fix landed upstream, I imported it into our package. ** Changed in: systemd (Ubuntu) Importance: Undecided => Medium ** Changed in: systemd (Ubuntu) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
Upstreamed: https://github.com/systemd/systemd/pull/3013 ** Bug watch added: Red Hat Bugzilla #1312011 https://bugzilla.redhat.com/show_bug.cgi?id=1312011 ** Also affects: systemd (Fedora) via https://bugzilla.redhat.com/show_bug.cgi?id=1312011 Importance: Unknown Status: Unknown ** Changed in: systemd (Ubuntu) Status: New => In Progress ** Changed in: systemd (Ubuntu) Assignee: (unassigned) => Martin Pitt (pitti) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1565969] Re: Udev rule causes automatic incorrect unmount of dm device
This bug is being tracked in Netapp's internal bug tracking system: LSIP200858428 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565969 Title: Udev rule causes automatic incorrect unmount of dm device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1565969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
