Red Hat Bugzilla – Bug 238983
multipath callouts use incorrect command line options for dasdview
Last modified: 2010-10-22 10:43:22 EDT
Description of problem: Device-mapper multipath uses callouts to identify paths & priority groups. On s390 using IBM's DASD devices this uses the dasdview command to obtain this information. Support for this was included in the RHEL 4.5.0 device-mapper-multipath based on upstream work. The dasdview command is provided in the s390-tools RPM and changed its command line options upstream in version 1.4.0: 1.4.0: [...] - dasd tools: minor enhancements, rework and harmonization of the commandline options The main change here is that the "-f <device node>" option is no longer mandatory and has been replaced by a mandatory device argument instead. i.e.: pre-1.4.0: # dasdview -f /dev/dasda post-1.4.0: # dasdview /dev/dasda Older versions fail if the "-f" is not supplied. RHEL5 does not have this problem as it ships with s390-tools-1.5.3; RHEL4 uses 1.3.2 and so will not work with the default multipath configuration although the problem is easily worked around by overriding the default callouts in multipath.conf. Version-Release number of selected component (if applicable): device-mapper-multipath-0.4.5-21.RHEL4.s390 How reproducible: 100% Steps to Reproduce: 1. Configure multipath.conf on a system using dasd devices as the underlying storage 2. Run multipath Actual results: # multipath dasdview: usage error Device not specified! error calling out /sbin/dasdview -j /dev/dasda Expected results: # multipath [ no output ] # multipath -l -v3 load path identifiers cache # # all paths in cache : # path dasda not found in pathvec [...]
Created attachment 154105 [details] change hwtable.c & config templates to use "-f <device>"
Fix applied. Thanks.
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----- Additional Comments From markver@us.ibm.com 2007-09-20 20:54 EDT ------- I'll have to check with some real multipath devices ... but it looks like this is fixed on 64bit (also have to check on 31bit system when I get the chance). At least I no longer see the error messages: dasdview: usage error Device not specified! error calling out /sbin/dasdview -j /dev/dasda Also the device section for dasd in /etc/multipath.conf seems to have the correct syntax now: getuid_callout "/sbin/dasdview -j -f /dev/%n" This event sent from IssueTracker by jkachuck issue 119433
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 the 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/RHEA-2007-0808.html