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Bug 1081243 - pcs should use pipes instead of command line inputs internally
Summary: pcs should use pipes instead of command line inputs internally
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: pcs
Version: 7.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Tomas Jelinek
QA Contact: Cluster QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-26 20:46 UTC by Jaroslav Kortus
Modified: 2015-03-05 09:19 UTC (History)
5 users (show)

Fixed In Version: pcs-0.9.137-1.el7
Doc Type: Bug Fix
Doc Text:
Cause: pcs updates CIB using cibadmin tool like this: cibadmin --xml-text updated_cib_xml Consequence: If length of the updated_cib_xml exceeds allowed command line length then update fails with "Argument list too long" error. This makes pcs unable to update CIB with large number of resources/constraints. Fix: Changed the CIB update using cibadmin tool like this: cibadmin --xml-pipe and pass the updated_cib_xml to cibadmin stdin. Result: pcs is able to update CIB with large number of resources/constraints.
Clone Of:
: 1150662 (view as bug list)
Environment:
Last Closed: 2015-03-05 09:19:13 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
[1/3] proposed fix (171.91 KB, patch)
2014-05-29 09:46 UTC, Tomas Jelinek 		no flags Details | Diff
[2/3] proposed fix (186.77 KB, patch)
2014-05-29 09:47 UTC, Tomas Jelinek 		no flags Details | Diff
[3/3] proposed fix (1.39 KB, patch)
2014-05-29 09:47 UTC, Tomas Jelinek 		no flags Details | Diff
[3/3] proposed fix (1.40 KB, patch)
2014-05-29 10:00 UTC, Tomas Jelinek 		no flags Details | Diff
proposed fix - deleteing a resource with a large number of options (352.44 KB, patch)
2014-11-26 14:28 UTC, Tomas Jelinek 		no flags Details | Diff
Show Obsolete (1) View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 1223273 0 None None None Never
Red Hat Product Errata RHBA-2015:0415 0 normal SHIPPED_LIVE pcs bug fix and enhancement update 2015-03-05 14:16:41 UTC

Description Jaroslav Kortus 2014-03-26 20:46:59 UTC 
Description of problem:
If I create a very large group (let's say 200 filesystem resources) the pcs commands start failing.

# pcs -f /tmp/tmp.AZ33xBKmD1 resource group add fsgroup fs-156
Argument list too long
Error: unable to locate command: /usr/sbin/cibadmin

The reason is probably internal use of cibadmin -X while -x or -p options would probably do a better job in this regard.


Version-Release number of selected component (if applicable):
pcs-0.9.115-32.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. create 200+ resources
2. add them to one group via pcs resource group add <group> <resource>
3.

Actual results:
pcs fails with "Argument list too long"

Expected results:
pcs succeeds

Additional info:
Comment 3 Tomas Jelinek 2014-05-29 09:46:50 UTC 
Created attachment 900306 [details]
[1/3] proposed fix
Comment 4 Tomas Jelinek 2014-05-29 09:47:15 UTC 
Created attachment 900307 [details]
[2/3] proposed fix
Comment 5 Tomas Jelinek 2014-05-29 09:47:41 UTC 
Created attachment 900308 [details]
[3/3] proposed fix
Comment 6 Tomas Jelinek 2014-05-29 10:00:39 UTC 
Created attachment 900309 [details]
[3/3] proposed fix
Comment 7 Tomas Jelinek 2014-09-11 13:15:29 UTC 
Before Fix:
[root@rh70-node1 ~]# rpm -q pcs
pcs-0.9.115-32.el7.x86_64
[root@rh70-node1 ~]# pcs cluster cib test.xml
[root@rh70-node1 ~]# for i in `seq 500`; do pcs -f test.xml resource create dummy-$i Dummy; done
[root@rh70-node1 ~]# pcs -f test.xml resource group add dummies dummy-1 dummy-2
Argument list too long
Error: unable to locate command: /usr/sbin/cibadmin
[root@rh70-node1 ~]# echo $?
1

After Fix:
[root@rh70-node1 ~]# rpm -q pcs
pcs-0.9.126-1.el7.x86_64
[root@rh70-node1 ~]# pcs cluster cib test.xml
[root@rh70-node1 ~]# for i in `seq 500`; do pcs -f test.xml resource create dummy-$i Dummy; done
[root@rh70-node1 ~]# pcs -f test.xml resource group add dummies dummy-1 dummy-2
[root@rh70-node1 ~]# pcs -f test.xml resource
{output trimmed}
 dummy-499      (ocf::heartbeat:Dummy): Stopped 
 dummy-500      (ocf::heartbeat:Dummy): Stopped 
 Resource Group: dummies
     dummy-1    (ocf::heartbeat:Dummy): Stopped 
     dummy-2    (ocf::heartbeat:Dummy): Stopped
Comment 9 Tomas Jelinek 2014-11-26 14:28:10 UTC 
Created attachment 961677 [details]
proposed fix - deleteing a resource with a large number of options

Before Fix:
[root@rh70-node1:~]# rpm -q pcs
pcs-0.9.126-1.el7.x86_64
[root@rh70-node1:~]# pcs resource create dummy Dummy
[root@rh70-node1:~]# pcs cluster cib test.xml
[root@rh70-node1:~]# for i in `seq 5000`; do pcs -f test.xml resource meta dummy foo-$i=bar-$i; done
[root@rh70-node1:~]# pcs -f test.xml resource group add dummies dummy
[root@rh70-node1:~]# pcs -f test.xml resource delete dummies
Removing group: dummies (and all resources within group)
Stopping all resources in group: dummies...
Deleting Resource (and group) - dummy
Argument list too long
Error: unable to locate command: /usr/sbin/cibadmin
[root@rh70-node1:~]# echo $?
1

After Fix:
[root@rh70-node1:~]# rpm -q pcs
pcs-0.9.137-1.el7.x86_64
[root@rh70-node2:~]# pcs resource create dummy Dummy
[root@rh70-node2:~]# pcs cluster cib test.xml
[root@rh70-node1:~]# for i in `seq 5000`; do pcs -f test.xml resource meta dummy foo-$i=bar-$i; done
[root@rh70-node1:~]# pcs -f test.xml resource group add dummies dummy
[root@rh70-node1:~]# pcs -f test.xml resource delete dummies
[root@rh70-node1:~]# pcs -f test.xml resource delete dummies
Removing group: dummies (and all resources within group)
Stopping all resources in group: dummies...
Deleting Resource (and group) - dummy
[root@rh70-node1:~]# echo $?
0
Comment 10 Jaroslav Kortus 2015-01-14 18:18:57 UTC 
[root@virt-082 ~]# for i in `seq -w 1 300`; do echo "Creating $i"; pcs resource create dummy$i ocf:heartbeat:Dummy; done
Creating 001
Creating 002
...
Creating 300
[root@virt-082 ~]#
[root@virt-082 ~]# pcs status | grep dummy | wc -l
300

It took a while, but it succeeded.
Verified with pcs-0.9.137-7.el7.x86_64.
Comment 12 errata-xmlrpc 2015-03-05 09:19:13 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0415.html
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