Device-mapper-multipath is not reading SAN configuration settings from multipath.conf on Red Hat Enterprise Linux 5
Issue
- Multipath does not take the configuration defined in multipath.conf and keeps the patch_checker as readsector0 instead of tur.
Environment
- Red Hat Enterprise Linux 5 (RHEL5)
-
Multipathed storage from SAN, managed by device-mapper-multipath (dm-multipath)
- /etc/multipath.conf contains a device section to modify default settings for SAN:
device { vendor "EMC" product "SYMMETRIX" getuid_callout "/lib/udev/scsi_id --whitelisted --page=pre-spc3-83 --device=/dev/%n" features "0" hardware_handler "0" path_selector "round-robin 0" path_grouping_policy multibus rr_weight uniform no_path_retry 6 rr_min_io 1000 path_checker tur prio const }- device-mapper-multipath is still using the default settings for this SAN, despite configuring alternative settings in /etc/multipath.conf.
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