MULTIPATH

• Get WWN
• ASM

ASM

Em um servidor com ASM nunca executar o partprobe para todos os discos.
Pois o partprobe pode impactar nos discos ASM já em produção.
Sempre especificar o disco que o partprobe deve analisar a alteração de geometria.

Check all paths

#control=0;multipath -l  | grep dm- | awk '{print $1}' | while read mpath; do if [ $control -eq 0 ]; then control=1; echo mpath_name Number_of_disks active_paths round_robin ; fi;echo $mpath $(multipath -l $mpath | grep sd[a-z] | wc -l ) $(multipath -l $mpath | grep sd[a-z] | grep active| wc -l) $(if [ $(multipath -l $mpath | grep round-robin | grep -w active | wc -l ) -eq 1 ] ; then echo active; else echo failed;fi);done  | column  -t

oracle linux 6.8

mpathconf --with_chkconfig y
mpathconf --with_multipathd y
mpathconf --find_multipaths y

Gera Conf

echo  "multipaths {"
multipath -l | \
        grep ^[a-z] | \
        grep -v ^size | \
        awk '{print $1 " "$2}' | \
        sed -e "s/(//" -e "s/)//g"| \
        while read MPATH lunid
        do
                
                echo  " multipath {"
                echo  "         wwid                     $lunid"
                echo  "         alias                    $MPATH"
                echo  "         path_grouping_policy     multibus"
                echo  "         path_checker             readsector0"
                echo  "         path_selector            \"round-robin 0\""
                echo  "         failback                 manual"
                echo  "         rr_weight                priorities"
                echo  "         no_path_retry            5"
                echo  " }"
                
        done
echo  "}"

echo  "multipaths {"
multipath -l | \
        grep ^[a-z] | \
        grep -v ^size | \
        awk '{print $1 " "$2}' | \
        sed -e "s/(//" -e "s/)//g"| \
        while read MPATH lunid
        do
                
                echo  " multipath {"
                echo  "         wwid                     $lunid"
                echo  "         alias                    $MPATH"
                echo  "         path_grouping_policy     multibus"
                echo  "         path_selector            \"round-robin 0\""
                echo  "         failback                 manual"
                echo  "         rr_weight                priorities"
                echo  "         no_path_retry            queue"
                echo  "         prio                     1"
                echo  " }"
                
        done
echo  "}"

Windows

(gwmi -Namespace root\wmi -Class mpio_disk_info).driveinfo | select Name,NumberPaths
Get-InitiatorPort | Select-Object -Property PortAddress | Format-Table -AutoSize
Get-WmiObject -class MSFC_FCAdapterHBAAttributes -namespace "root\WMI" | ForEach-Object {(($_.NodeWWN) | ForEach-Object {"{0:x}" -f $_}) -join ":"}