answer below... On Mar 28, 2012, at 11:54 AM, Dan Swartzendruber wrote:
> On 3/28/2012 2:40 PM, Richard Elling wrote: >> On Mar 28, 2012, at 11:24 AM, Dan Swartzendruber wrote: >> >>> On 3/28/2012 1:38 PM, Richard Elling wrote: >>>> On Mar 28, 2012, at 9:52 AM, Dan Swartzendruber wrote: >>>> >>>> >>>>> So I have an M1015 and it works fine. I noticed the other day I >>>>> hotplugged a crucial M4 into the last free port on the HBA, and later >>>>> noticed in the dmesg output: >>>>> >>>>> Mar 27 17:55:40 nas genunix: [ID 483743 kern.info] >>>>> /scsi_vhci/disk@g500a07510324 >>>>> d633 (sd9) multipath status: degraded: path 8 >>>>> mpt_sas9/disk@w500a07510324d633,0 >>>>> is online >>>>> >>>>> I don't actually have any multipathing. Is this spurious? >>>>> >>>> No >>>> >>>> >>> Let me rephrase. Is it spurious in my case? Your second comment seems to >>> imply it is? >> >> No, it is not spurious. It is informational. >> >>>>> Is there some something I can tweak to get rid of stuff like this? >>>>> >>>> Here's a bad idea: configure syslog to ignore kernel info messages. >>>> Better idea: consider yourself informed and be happy ;-) >>>> -- richard >>>> >>> See above? >> >> I tend to choose the "better idea" >> > Heh. Bad choice of words on my part then. I meant spurious as far as > indicating an issue in my configuration. I assume there is no issue, since I > do not multipath? It is not spurious. More likely you are alarmed by the term "degraded" which is often used in Solaris to designate when redundancy is suboptimal. In the multipathing code the description is: * This framework identifies the client device in three distinct states: * * OPTIMAL - Client device has at least one redundant path. * DEGRADED - No redundant paths (critical). Failure in the current active * path would result in data access failures. * FAILED - No paths are available to access this device. http://src.illumos.org/source/xref/illumos-gate/usr/src/uts/common/sys/mdi_impldefs.h#499 Clearly, since the device can be multipathed, but there is only one operational path, the status is degraded. Don't worry, be happy. -- richard -- DTrace Conference, April 3, 2012, http://wiki.smartos.org/display/DOC/dtrace.conf ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422 _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
