I’m sure this is kids play to most people, but I’ve just not done much SAN work with Linux.<\/p>\n
We bought a new EMC CLARiiON CX4-240, and I was just tossing it random LUN’s to do speed & HA tests. When I added a LUN I’d see it in powermt, and I didn’t know what the equivalent of devfsadm was in Linux … SLES to be specific. What can I say, I worked with Solaris way too long.<\/p>\n
The first step is to run: powermt display<\/p>\n
# powermt display Note the 3\/4 preceding the HBA’s.<\/p>\n Now, execute this:<\/p>\n # echo “- – -” > \/sys\/class\/scsi_host\/host3<\/strong>\/scan Its my understand this also works on RHEL and others, but YMMV. This is all buried in the PowerPath manual too, but hopefully I’ve saved someone a bit of time.<\/p>\n Till next time…<\/p>\n","protected":false},"excerpt":{"rendered":" I’m sure this is kids play to most people, but I’ve just not done much SAN work with Linux. We bought a new EMC CLARiiON CX4-240, and I was just tossing it random LUN’s to do speed & HA tests. When I added a LUN I’d see it in powermt, and I didn’t know what […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,17],"tags":[109,19,108,20],"class_list":["post-41","post","type-post","status-publish","format-standard","hentry","category-linux","category-san","tag-clariion","tag-powerpath","tag-san","tag-sles"],"_links":{"self":[{"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/41","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41"}],"version-history":[{"count":13,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":306,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions\/306"}],"wp:attachment":[{"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecimulti.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nCLARiiON logical device count=3
\n================================================
\n—– Host Bus Adapters ——— —— I\/O Paths —– —— Stats ——
\n### HW Path Summary Total Dead IO\/Sec Q-IOs Errors
\n================================================
\n3<\/strong> qla2xxx optimal 6 0 – 0 0
\n4 <\/strong>qla2xxx optimal 6 0 – 0 0<\/p>\n
\n# echo “- – -” > \/sys\/class\/scsi_host\/host4<\/strong>\/scan<\/p>\n