Bug 706339

Summary:	open/closed files in cifs mount points
Product:	Red Hat Enterprise Linux 5	Reporter:	Ivana Varekova <varekova>
Component:	kernel	Assignee:	Jeff Layton <jlayton>
Status:	CLOSED ERRATA	QA Contact:	Petr Beňas <pbenas>
Severity:	medium	Docs Contact:
Priority:	low
Version:	5.7	CC:	bnater, ccui, jiali, jlayton, jmarchan, pbenas, pstehlik, sprabhu, steved
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-2.6.18-283.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	706333	Environment:
Last Closed:	2012-02-21 03:48:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	706333

Description Ivana Varekova 2011-05-20 07:29:33 UTC

Is there a way how to find out open/closed files in cifs mount point (el6 have two separate columns for Posix Opens and Posix Mkdirs, el5 version seems to report both (files and dirs) to MkDirs column.

el6 version:
cat /proc/fs/cifs/Stats
...snipped...
Opens: 0 Closes: 1 Deletes: 0
Posix Opens: 1 Posix Mkdirs: 0
...snipped...

el5 version:
cat /proc/fs/cifs/Stats
...snipped...
Opens: 0 Closes: 20Deletes: 10    <---- closed files
Mkdirs: 21 Rmdirs: 1              <---- opened files
...snipped...
)

+++ This bug was initially created as a clone of Bug #706333 +++

Description of problem:
cifsiostat doesn't report files opened on share mounted from
linux machine. cifsiostat obtains values from /proc/fs/cifs/Stats. When file on
linux share is opened, this action is counted as "Mkdirs" in
/proc/fs/cifs/Stats.


Version-Release number of selected component (if applicable):
sysstat-7.0.2-6.el5

How reproducible:
always

Steps to Reproduce:
1. mount samba share from linux machine
2. open /proc/fs/cifs/Stats
3. run "touch file.txt" on share mounted in step 1.
  
Actual results:
Mkdirs and Closes values are increment by one:

Opens: 0 Closes: 1Deletes: 0
Mkdirs: 1 Rmdirs: 0

Expected results:
Opens and Closes values are increment by one:

Opens: 1 Closes: 1Deletes: 0
Mkdirs: 0 Rmdirs: 0


Additional info:
2) \\linuxmachine\linuxshare
SMBs: 865 Oplock Breaks: 0
Reads:  480 Bytes: 7847956
Writes: 184 Bytes: 10268672
Flushes: 0
Locks: 0 HardLinks: 0 Symlinks: 0
Opens: 0 Closes: 20Deletes: 10    <---- closed files
Mkdirs: 21 Rmdirs: 1              <---- opened files
<snip>

Comment 1 Jeff Layton 2011-07-08 10:53:54 UTC

I've posted a set of test kernels to my people.redhat.com page that have a patch for this issue:

    http://people.redhat.com/jlayton/

...could you test them and let me know if they resolve the issue for you?

Comment 2 RHEL Program Management 2011-08-04 04:14:44 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 6 Jarod Wilson 2011-08-30 19:23:03 UTC

Patch(es) available in kernel-2.6.18-283.el5
You can download this test kernel (or newer) from http://people.redhat.com/jwilson/el5
Detailed testing feedback is always welcomed.

Comment 8 Petr Beňas 2011-10-17 07:34:11 UTC

Reproduced in 2.6.18-282.el5 and verified in 2.6.18-283.el5.

Comment 9 errata-xmlrpc 2012-02-21 03:48:24 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.

http://rhn.redhat.com/errata/RHSA-2012-0150.html