Colin
OK - I see you are using enclosure naming - and BTW - the /dev/vx/dmp /dev/vx/dmp are just the same as disks BUT with the added provision of DMP to keep the device online. How many paths to these devices # vxdmpadm getsubpaths or # vxdisk path If a CLARiiON , and if only 2 paths - then set the array iopolicy to singleactive - this is most likely - see later for DMP # vxdmpadm listenclosure all # vxdmpadm setattr enclosure ENC_name iopolicy=singleactive If a CLARiiON , and if more than 2 paths - then set the array iopolicy to balanced - and DMP does know how to stop IO to the secondary paths. Note - this is against EMC recommendations but it works. # vxdmpadm listenclosure all # vxdmpadm setattr enclosure ENC_name iopolicy=balanced I also notice that the enclosure names are lower case - indicating a V5.x release VxVM installed. - are the CLARiiON APMs running ? # vxdmpadm listapm all Check the CLARiiON are Active If a fencing cluster - then these are local LUNs at the point of /dev/vx/dmp names for the devices. And yes SCSI3 keys will be placed on them in a fencing cluster # gabconfig -a Check if there is Port b membership - if so then yes you have a fencing cluster. Check also the DMP block switch - it may be that with the iopolicy incorrect, and on low IO you did not reach the limit for # vxdmpadm gettune all dmp_pathswitch_blks_shift Now - when busy and IO chunks bigger than path switch level ( and with iopolicy incorrect ) a path switch will cause a trespass (check SAN logs) AND a block, drain, resume on the DMP path. There will be a failover message logged in /etc/vx/dmpevents.log - check here also. Stuart ________________________________ From: veritas-vx-boun...@mailman.eng.auburn.edu [mailto:veritas-vx-boun...@mailman.eng.auburn.edu] On Behalf Of Collin Sent: Wednesday, 31 March 2010 2:09 AM To: William Havey Cc: veritas-vx@mailman.eng.auburn.edu Subject: Re: [Veritas-vx] VxVm Sorry for any confusion... I've got several powerpath devices from a dead system that I'm mounting temporarily on one node in my cluster. I run a devfsadm -Cv and vxdctl enable. After that I can see the powerpath devices listed as... emc_clarrion0_10 auto:none - - online invalid I modified my /etc/vfstab file to mount the devices.. /dev/vx/dmp/emc_clariion0_10s6 /dev/vx/rdmp/emc_clariion0_10s6 /u10 ufs 3 yes - The device mounts and I can access the file system with all my data. When the activity starts to increase on these temporary mount points, I see a count down on the console that port H has lost connectivity. After the 16 seconds, the node panics and of course reboots. However, if I mount the power path devices using a single path.. /dev/dsk/c1t5006016100600432d10s6 /dev/rdsk/c1t5006016100600432d10s6 /u10 ufs 3 yes - I never get the port H losing connectivity. I want to use the dmp name in case I lose a path to these disk. Any reason why using the dmp name causes port H to lose connectivity vs. using a single path? Thanks, Collin On Tue, Mar 30, 2010 at 10:48 AM, William Havey <bbha...@gmail.com> wrote: The original message states "mount these disks as /dev/vx/dmp/<emc_array>_Xs6 ". Perhaps this is normal behavior. Mounts are of devices which receive I/O. A "/dev/vx/dmp/..." device entry isn't I/O capable. I think a clearer statement of what Collin intends to do is needed. Bill On Tue, Mar 30, 2010 at 3:01 AM, Dmitry Glushenok <gl...@jet.msk.su> wrote: Hello, Panic string and previous messages usually helps to understand cause.. Release notes to RP2-RP3 also provides short descriptions of fixed issues like "Fixed the cause of a system panic when mutex_panic() was called from vol_rwsleep_wrlock()." On 29.03.2010, at 19:02, Collin wrote: > I've got the following.... > > Solaris 10 > VxVM 5.0MP3RP1HF12 > > I have a number of mount points that are being migrated from /dev/dsk/cXtXdXsX to clustered mount points. The problem I'm having is if I mount these disk in the /dev/dsk/cXtXdXsX format I run the risk that if something were to cause the direct path to go down I would lose the databases on these mount points. But when I mount these disks as /dev/vx/dmp/<emc_array>_Xs6 my system panics and core dumps. > > Does VxVM have any issues mounting /dev/vx/dmp/<emc_array>_Xs6?? > > Thanks, > Collin > _______________________________________________ > Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx -- Dmitry Glushenok Jet Infosystems _______________________________________________ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
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