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SubjectRe: Rereading disk geometry without reboot
Jan Engelhardt wrote:
>>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.

There's 'blockdev --rereadpt' also, but neither of these work
on a mounted filesystem afaik.

--
~Randy
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