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Table of Contents

Multipath

Zakladni prikazy:

  • zobrazeni aktivnich multipathu: 
    multipath -ll
  • reload podle kofigurace: 
    multipath -v2

Vzorova konfigurace

  • nastavuje failover nad storage pripojnou pomoci FC a iSCSI
  • blacklistuje vsechna zarizeni mimo tech s wwid uvedenym v blacklist exceptions
  • multipathy uvadime v sekci multipaths, aby dostali hezke jmeno :)
blacklist {
        wwid .*
}
blacklist_exceptions {
        property "(ID_WWN|SCSI_IDENT_.|ID_SERIAL)"
        wwid "26261353635663533|2317936357870636c"
}

defaults {
#                verbosity 6
                failback        manual
                path_grouping_policy  failover
                features "0"
                no_path_retry fail
}
multipaths {
       multipath {
              wwid              26261353635663533
              alias             backup
        }
       multipath {
              wwid              2317936357870636c
              alias             mach3
        }
}

Pridani noveho multipath zarizeni

  • pridavame zarizeni jehoz jedna z cest je /dev/sdh
  • zjistime si jeho scsi_id (wwid) nasledujicim prikazem: 
    /lib/udev/scsi_id -u -g -v /dev/sdh
2317936357870636c
  • pridame ho do konfigurace do sekce blacklist_exceptions (oddelovac je |):
    wwid "26261353635663533|2317936357870636c"
 
linux/multipath.1472807001.txt.gz · Last modified: 2016/09/02 11:03 by vondra