On Mon, Sep 3, 2018 at 8:01 PM Fabrice Bacchella < fabrice.bacche...@orange.fr> wrote:
> > Le 3 sept. 2018 à 18:31, Nir Soffer <nsof...@redhat.com> a écrit : > > On Mon, Sep 3, 2018 at 5:07 PM Fabrice Bacchella < > fabrice.bacche...@orange.fr> wrote: > >> In the release notes, I see: >> >> • BZ 1622700 [downstream clone - 4.2.6] [RFE][Dalton] - Blacklist all >> local disk in multipath on RHEL / RHEV Host (RHEL 7.5) >> Feature: >> Blacklist local devices in multipath. >> >> Reason: >> multipath repeatedly logs irrelevant errors for local devices. >> >> Result: >> Local devices are blacklisted, and no irrelevant errors are logged >> anymore. >> >> What defines a local disk ? I'm using a SAN on SAS. For many peoples, SAS >> is only for local disks, but that's not the case. Will other 4.2.6 will >> detect that ? >> > > We don't have any support for SAS. > > If you SAS drives are attached to the host using FC or iSCSI, you are fine. > > > Nope, they are attached using SAS. > I guess oVirt see them as FCP devices? Are these disks connected to multiple hosts? Please share the output of: vdsm-client Host getDeviceList ... Where do I find the protocol multipath thinks the drives are using ? multipath.conf(5) says: The protocol strings that multipath recognizes are scsi:fcp, scsi:spi, scsi:ssa, scsi:sbp, scsi:srp, scsi:iscsi, scsi:sas, scsi:adt, scsi:ata, scsi:unspec, ccw, cciss, nvme, and undef. The protocol that a path is using can be viewed by running multipathd show paths format "%d %P" So this should work: blacklist_exceptions { protocol "(scsi:fcp|scsi:iscsi|scsi:sas)" } The best way to make this change is to create a dropin conf file, and not touch /etc/multipath.conf, so vdsm will be able to update later. $cat /etc/multipath/conf.d/local.conf blacklist_exceptions { protocol "(scsi:fcp|scsi:iscsi|scsi:sas)" } I hope it works for overriding vdsm configuration, if not, you will need to change /etc/multipath.conf, and mark it as VDSM_PRIVATE like this; $ head -3 /etc/multipath.conf # # VDSM REVISION 1.6 # VDSM PRIVATE Once it works, I suggest to file a bug to support sas disks by default. Nir
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