Hi , we have a server rx4640 model with 8gb ram 11iv2..n only one fc card in it... root #/ >ioscan -fnC fc Class I H/W Path Driver S/W State H/W Type Description ================================================================= fc 0 0/2/1/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channe l Mass Storage Adapter /dev/td0
which is connected to a san-switch 24 port... we r havng a power downtime during which this san-switch would be powere off for 5 min...
now this san-switch is in cluster with another san-switch...also zoning has been done for this rx4640 server...in both switches.. cfg: TOP_SWITCH_CEDGE zone: ATM_SERVER_EVA 50:00:1f:e1:50:09:61:28 50:06:0b:00:00:60:21:a8 50:00:1f:e1:50:09:61:2c cfg: BOT_SWITCH_CEDGE zone: ATM_SERVER_EVA 50:06:0b:00:00:60:21:a8 50:00:1f:e1:50:09:61:2d 50:00:1f:e1:50:09:61:29
my questn is at time of actvty can i shutdown d applcn n place the cable in another san-switch ( xyz port ) ...there wouldb be sme pyhsical path changes right ?? i will have to do vgimport when i change the san-switch for this particular rx4640 host ??
It's not where the server is plugged into the SAN that matters - it's where the disk array is plugged in.
If the disk array is being moved to a different SAN port or SAN switch, or the switch domain ID is changing then the hardware paths and device files will change and you will need to vgexport/vgimport.
If its just the server thats moving to a different SAN port, you should be fine to unmount the filesystems/deactivate the VG, move the server then re-activate/re-mount.
1] shutdowm my applicn 2] vgexport -p -v map file 3] vgchange -a n vg 4] power off the switch 1 5] change d port f rom switch 1 to any switch 2 6] vgchange -a y vg 7] mount lvol
Yes, lookd good to me - chucking in the "-s" option on the vgexport will likely make the vgimport more straightforward as well, as you will get the VGID of the volume group also written to the map file...
