Hi,

I have several Linux system connected to SAN there is an activity performed at the storage where is storage server rebooted(StoreOnce) and after storage server comes up online all the server connected SAN automatically but only two servers in my environment unable to auto rediscover the SAN.

I have to rescan the SAN again. My question is that why host unable to auto rediscover the storage after the storage (StoreOnce ) rebooted.

SAN is configured in multipathing and it's a VM host

Thanks,
Ashish Sood

As you've been told for TEN YEARS now, you need to provide details. Version/distro of Linux? How it's connected to the SAN? Where/how are the multiple paths connected? And do you mean it *IS* a VM host (to other systems), or a GUEST on a VM host? What kind of VM??

Have you contacted HP for help, or read the manual? Is that SAN device capable of hot-plugging? Does it re-announce drives after a boot/maintenance? And if both paths are connected to the same SAN device, why do you think multipathing would help??? You are essentially unplugging disks from your system while its running...and chances are the devices aren't meant to be hot-plug devices.