search for: path_checker

.../sbin/mpath_prio_alua /dev/%n" hardware_handler "0" path_selector "round-robin 0" path_grouping_policy group_by_prio failback immediate rr_weight uniform no_path_retry 18 rr_min_io 100 path_checker tur } - but our actual multipathing as shown by multipath -ll , and multipath -ll -v 3 looks as though for the HSV400 it is using the defaults rather than these settings. The defaults are #defaults { # udev_dir /dev # polling_interval 10 # selector...

...then I put something like this in multipath.conf devices { device { vendor "IBM" product "^1814" product_blacklist "Universal Xport" path_grouping_policy "group_by_prio" path_checker "rdac" features "0" hardware_handler "1 rdac" prio "rdac" failback immediate rr_weight "uniform" no_path_retry "12" } } In CentOS 6.x...

Hello, I hope to be in the right list. my question is the following. I can''t seem to get multipathing configure on XCP 1.6. In XenCenter I was able to enable "Multipath" however, in the LUN under general tab I see " multipath 1 of 1 active", the the CLI I do the following command xe --m node session it list only one session. Can someone help me please? Thanks in

.../sbin/mpath_prio_alua /dev/%n" hardware_handler "0" path_selector "round-robin 0" path_grouping_policy group_by_prio failback immediate rr_weight uniform no_path_retry 18 rr_min_io 100 path_checker tur } - but our actual multipathing as shown by multipath -ll , and multipath -ll -v 3 looks as though for the HSV400 it is using the defaults rather than these settings. The defaults are #defaults { # udev_dir /dev # polling_interval 10 # selector...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

.... I've done that but the default configuration for the DS3400s So you switched from IBM's proprietary multipath driver to the native Linux multipathing. Correct? > is: > device { > vendor IBM > product 1726-4xx > path_checker rdac > features 1 queue_if_no_path > hardware_handler 1 rdac > prio_callout /sbin/mpath_prio_rdac /dev/%n > no_path_retry 300 > rr_min_io 1000 > } The right settings are documented here:...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

...ce it. The V3700 complained that we were using the IBM's RDAC driver (true) and we were advised to change to using Linux multipath. I've done that but the default configuration for the DS3400s is: device { vendor IBM product 1726-4xx path_checker rdac features 1 queue_if_no_path hardware_handler 1 rdac prio_callout /sbin/mpath_prio_rdac /dev/%n no_path_retry 300 rr_min_io 1000 } The V3700 is still complaining and I note the "path checker rdac"...

...blacklist { devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" devnode "^hd[a-z][[0-9]*]" devnode "^hda[0-9]*" devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]" } multipaths { multipath { wwid 222ea000155eadda4 alias stor path_grouping_policy multibus path_checker readsector0 path_selector "round-robin 0" failback immediate } } ================================================== The output from "multipath -v 3" of my CentOS machine is below: load path identifiers cache # # all paths in cache : # 222ea000155eadda4 0:0:0:0 sda 8:0...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

...m IBM's proprietary multipath driver to the native >Linux multipathing. Correct? Yes. We were told to do so by the suppliers of the V3700. > >> is: >> device { >> vendor IBM >> product 1726-4xx >> path_checker rdac >> features 1 queue_if_no_path >> hardware_handler 1 rdac >> prio_callout /sbin/mpath_prio_rdac /dev/%n >> no_path_retry 300 >> rr_min_io 1000 >> } > >The rig...

Are folks in the Centos community succesfully using device-mapper-multipath? I am looking to deploy it for error handling on our iSCSI setup but there seems to be little traffic about this package on the Centos forums, as far as I can tell, and there seems to be a number of small issues based on my reading the dm-multipath developer lists and related resources. -geoff Geoff Galitz Blankenheim

...{ udev_dir /dev polling_interval 2 selector "round-robin 0" path_grouping_policy multibus # getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout /bin/true path_checker readsector0 rr_min_io 10 rr_weight priorities failback 2 no_path_retry fail user_friendly_name no } The default parameter node.conn[0].timeo.noop_out_interval = 10 on the initiator tells it...