----- Original Message ----- > From: "Patrick Hurrelmann" <patrick.hurrelm...@lobster.de> > To: vdsm-de...@lists.fedorahosted.org, devel@ovirt.org > Sent: Tuesday, July 29, 2014 4:43:36 PM > Subject: [vdsm] Wrong default multipath configuration for EL6 > > Hi all, > > after suffering from boot-failures after kernel-updates on my EL6 hosts > (the ones that san boot via iscsi), I finally managed to locate the root > cause of the problem: the default values as set by vdsm are incorrect > for EL6 and prohibit a successful iscsi boot (the faulty multipath.conf > gets embedded in the new initrd on a kernel update). Additionally the > following errors are repeatedly logged on all my hosts (device ids may > vary) with the default vdsm multipath config: > > device-mapper: table: 253:5: multipath: error getting device > device-mapper: ioctl: error adding target to table > device-mapper: table: 253:5: multipath: error getting device > device-mapper: ioctl: error adding target to table > > And it all boils down to the default value set for option getuid_callout > in multipath.conf. Vdsm sets it to the following: > > getuid_callout "/sbin/scsi_id --whitelisted --replace-whitespace > --device=/dev/%n" > > According to the man-page and other docu the default value on EL6 is > "/lib/udev/scsi_id --whitelisted --device=/dev/%n". Although the binary > /sbin/scsi_id is a valid link to the target /lib/udev/scsi_id, the link > itself (/sbin/scsi_id) is _not_ included in the generated initrd. The > binary /lib/udev/scsi_id is indeed included and changing the default > config to use /lib/udev/scsi_id instead does make it all work again. > iscsi boot (after regenerating the initrd, as the multipath.conf is > embedded) is back to good and the previously logged device-mapper errors > are gone, too. > > Can someone please verify this and and apply the easy (attached) patch?
Thanks Patrick! I'll look into this. Would you open a bug for this issue, to help us track this issue? > > --- multipath.py.orig 2014-07-29 15:24:37.643839169 +0200 > +++ multipath.py 2014-07-29 15:25:06.823840362 +0200 > @@ -88,9 +88,8 @@ > log = logging.getLogger("Storage.Multipath") > > _scsi_id = utils.CommandPath("scsi_id", > - "/sbin/scsi_id", # EL6 > "/usr/lib/udev/scsi_id", # Fedora > - "/lib/udev/scsi_id", # Ubuntu > + "/lib/udev/scsi_id", # EL6, Ubuntu > ) > > > > Thanks a lot and best regards > Patrick > > -- > Lobster SCM GmbH, Münchner Straße 15a, D-82319 Starnberg > > HRB 178831, Amtsgericht München > Geschäftsführer: Dr. Martin Fischer, Rolf Henrich > _______________________________________________ > vdsm-devel mailing list > vdsm-de...@lists.fedorahosted.org > https://lists.fedorahosted.org/mailman/listinfo/vdsm-devel > _______________________________________________ Devel mailing list Devel@ovirt.org http://lists.ovirt.org/mailman/listinfo/devel