First of all, I'm quite new to Linux so forgive me if I use the terms 'disks', 'partitions' and 'devices' incorrectly below!
I have a Red Hat 5.2 x86_64 server with kernel version 2.6.18-92.el5. I have several SAN-based Vdisks presented to the server, appearing as /dev/sd*x* and, when I create a partition, /dev/sd*x*1 . The SAN is an hp EVA-8100.
Occasionally I need to extend a disk. I can increase the size of the Vdisk via the hp Command View EVA software, but the only way currently I can get the server to recognise the additional space is to reboot the server.
For various reasons I'm not currently using an LVM. Is there a command or method I can use to get the server to recognise the additional space without rebooting the server?