Change in vdsm[master]: lvm: Prevent auto-activation of logical volumes.

Eduardo has uploaded a new change for review.

Change subject: lvm: Prevent auto-activation of logical volumes.
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lvm: Prevent auto-activation of logical volumes.

When using FC storage, physical volumes are connected during boot,
and vdsm logical volumes are auto-activated by /etc/rc.sysinit
and/or /etc/init.d/netfs.

This patch prevents auto-activation of vdsm volumes using new
--setactivationskip and --ignoreactivationskip options, introduced
in lvm 2.02.100.

Note: The change of existing volumes should be done with a little app
running when installing or upgrading vdsm. In addition it should be
executable from command line. Should not be part of the vdsm code.

Change-Id: Iab9b7579990d934c60999b4c603c3acf46557be1
Bug-Url: https://bugzilla.redhat.com/1009812
Signed-off-by: Eduardo 
---
M vdsm/storage/lvm.py
1 file changed, 3 insertions(+), 1 deletion(-)

git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/36/20836/1

diff --git a/vdsm/storage/lvm.py b/vdsm/storage/lvm.py
index 0c2964e..2561ae4 100644
--- a/vdsm/storage/lvm.py
+++ b/vdsm/storage/lvm.py
@@ -769,6 +769,7 @@
     lvnames = tuple("%s/%s" % (vg, lv) for lv in lvs)
     cmd = ["lvchange"]
     cmd.extend(LVM_NOBACKUP)
+    cmd.append('--ignoreactivationskip')
     if isinstance(attrs[0], str):
         # ("--attribute", "value")
         cmd.extend(attrs)
@@ -1023,7 +1024,8 @@
     cont = {True: "y", False: "n"}[contiguous]
     cmd = ["lvcreate"]
     cmd.extend(LVM_NOBACKUP)
-    cmd.extend(("--contiguous", cont, "--size", "%sm" % size))
+    cmd.extend(("--setactivationskip", "y", "--ignoreactivationskip",
+                "--contiguous", cont, "--size", "%sm" % size))
     if initialTag is not None:
         cmd.extend(("--addtag", initialTag))
     cmd.extend(("--name", lvName, vgName))

[Jenkins CI RO]

oVirt Jenkins CI Server has posted comments on this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
......................................................................

Patch Set 1:

Build Successful

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit_el/4395/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_pep8_gerrit/5199/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit/5275/ : SUCCESS

[Dan Kenigsberg]

Dan Kenigsberg has posted comments on this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
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Patch Set 1: Code-Review-1

(2 comments)

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Commit Message
Line 6: 
Line 7: lvm: Prevent auto-activation of logical volumes.
Line 8: 
Line 9: When using FC storage, physical volumes are connected during boot,
Line 10: and vdsm logical volumes are auto-activated by /etc/rc.sysinit
which code exactly does the auto-activation? wouldn't it be simpler to ask sysv/systemd to be more selective? the new lvm logic of adding one flag to skip and another flag to ignore the first flag sounds crazy, begging for a third flag controlling whether the first flag has precedence over the second one. It reminds me too much of our

llPrepare(self, rw=False, setrw=False).
Line 11: and/or /etc/init.d/netfs.
Line 12: 
Line 13: This patch prevents auto-activation of vdsm volumes using new
Line 14: --setactivationskip and --ignoreactivationskip options, introduced

Line 11: and/or /etc/init.d/netfs.
Line 12: 
Line 13: This patch prevents auto-activation of vdsm volumes using new
Line 14: --setactivationskip and --ignoreactivationskip options, introduced
Line 15: in lvm 2.02.100.
please put this explicitly into vdsm.spec.
Line 16: 
Line 17: Note: The change of existing volumes should be done with a little app
Line 18: running when installing or upgrading vdsm. In addition it should be
Line 19: executable from command line. Should not be part of the vdsm code.

Eduardo has posted comments on this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
......................................................................

Patch Set 1:

(1 comment)

....................................................
Commit Message
Line 6: 
Line 7: lvm: Prevent auto-activation of logical volumes.
Line 8: 
Line 9: When using FC storage, physical volumes are connected during boot,
Line 10: and vdsm logical volumes are auto-activated by /etc/rc.sysinit
I'm agree with you that this is not my preferred API.
And I think that the opposite logic will be more convinient for us,
but this is the fine grain option that lvm provides by now.
Line 11: and/or /etc/init.d/netfs.
Line 12: 
Line 13: This patch prevents auto-activation of vdsm volumes using new
Line 14: --setactivationskip and --ignoreactivationskip options, introduced

[Jenkins CI RO]

oVirt Jenkins CI Server has posted comments on this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
......................................................................

Patch Set 2:

Build Successful

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit_el/4399/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_pep8_gerrit/5203/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit/5279/ : SUCCESS

Sergey Gotliv has posted comments on this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
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Patch Set 2:

You and Nir are working on the same issue:

http://gerrit.ovirt.org/#/c/20832/

Itamar Heim has abandoned this change.

Change subject: lvm: Prevent auto-activation of logical volumes.
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Abandoned

old. not touched for a while. please restore if relevant