This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Cause
 vmstat doesn't read whole device name if it is too long
Consequence
 Devices with long name weren't showed by vmstat -d command
Fix
 Increased number of maximum characters for device name
Result
 Devices with long name are shown

Updated patch seems to work correctly. Verified using reproducers on package  procps-3.2.8-16.el6.{x86_64,i686,ppc64,s390x}

- "vmstat -d" displaying 31 character long device name:
.live.[root@i386-6w-v1 vmstat]# vmstat -d
disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
testingdevicewithverylongname10     11      0      88       0      0      0       0       0      0      0

- "vmstat -p <partname>" displaying 34 character long partition name:
# vmstat -p toolongdevicenamethatcantest300p50
toolongdevicenamethatcantest300p50    reads   read sectors  writes    requested writes
                 334       2928          0          0

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0708.html