Hi, On Jessie 3.16.0-4-amd64 apt-cache policy multipath-tools multipath-tools: Installed: 0.5.0-6+deb8u2
Before any change multipath configuration was correct (4 devices active) I tried to add a new LUN devices are there (with lsscsi) but multipath configuration is messed up on the old LUN and on the new LUN devices are missing 360050763998a9023980000001300003d dm-3 IBM,FlashSystem-9840 size=100G features='0' hwhandler='0' wp=rw |-+- policy='round-robin 0' prio=0 status=enabled | `- 1:0:1:1 sdi 8:128 active undef running `-+- policy='round-robin 0' prio=0 status=active `- 1:0:0:1 sdg 8:96 active undef running 360050763998a9023980000000a000025 dm-0 IBM,FlashSystem-9840 size=200G features='0' hwhandler='0' wp=rw |-+- policy='round-robin 0' prio=0 status=enabled | |- 1:0:1:2 sdc 8:32 active undef running | |- 12:0:0:2 sdd 8:48 active undef running | `- 12:0:1:2 sde 8:64 active undef running `-+- policy='round-robin 0' prio=0 status=active `- 1:0:0:2 sdb 8:16 active undef running I get many of these [30921165.528541] device-mapper: multipath: Failing path 8:64. multipathd: io_setup failed multipathd: sde: unusable path multipathd.conf is identical to several servers (SLES, Ubuntu) Only the two Debian jessie servers face this problem
