Re: Rereading disk geometry without reboot

[Jan Engelhardt]

>I am using linux kernel 2.6.9 on a san.  I have file systems on

(What's a SAN?)

>non-partitioned disks.  I can resize the disk on the SAN, reboot and grow
>the XFS file system those disks.  What I would like to avoid rebooting or
>even unmounting the filesystem if possible.
>
>Is there any way to get the kernel to re-read the disk geometry and change
>the information it holds without rebooting or reloading the module (which is
>as bad as a reboot in my case)?

The `fdisk` tool will spit out an ioctl() to make the kernel reread the
partition table (on normal computers, don't know about or what SAN). No need to
reboot there at least.


Jan Engelhardt
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