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I have a compute node with 20 volumes attached using iscsi and multipath.
Each multipath device has 4 iscsi devices.

When I disconnect a volume it generates 779 multipath -ll calls.


iscsiadm -m node --rescan
iscsiadm -m session --rescan
multipath - r

multipath -ll /dev/sdch
multipath -ll /dev/sdcg
multipath -ll /dev/sdcf
multipath -ll /dev/sdce
multipath -ll /dev/sdcd
multipath -ll /dev/sdcc
multipath -ll /dev/sdcb
multipath -ll /dev/sdca
multipath -ll /dev/sdbz
multipath -ll /dev/sdby
multipath -ll /dev/sdbx
multipath -ll /dev/sdbw
multipath -ll /dev/sdbv
multipath -ll /dev/sdbu
multipath -ll /dev/sdbt
multipath -ll /dev/sdbs
multipath -ll /dev/sdbr
multipath -ll /dev/sdbq
multipath -ll /dev/sdbp
multipath -ll /dev/sdbo
multipath -ll /dev/sdbn
multipath -ll /dev/sdbm
multipath -ll /dev/sdbl
multipath -ll /dev/sdbk
multipath -ll /dev/sdbj
multipath -ll /dev/sdbi
multipath -ll /dev/sdbh
multipath -ll /dev/sdbg
multipath -ll /dev/sdbf
multipath -ll /dev/sdbe
multipath -ll /dev/sdbd
multipath -ll /dev/sdbc
multipath -ll /dev/sdbb
multipath -ll /dev/sdba
----
...... And so on for 779 times
cp /dev/stdin /sys/block/sdcd/device/delete
cp /dev/stdin /sys/block/sdcc/device/delete
cp /dev/stdin /sys/block/sdcb/device/delete
cp /dev/stdin /sys/block/sdca/device/delete
multipath - r


----

** Affects: nova
     Importance: Undecided
         Status: New

-- 
Diconnecting a volume with multipath generates excesive multipath calls
https://bugs.launchpad.net/bugs/1277316
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