[CentOS] Extending a CentOS disk without reboot
Gordon Messmer
gordon.messmer at gmail.com
Thu Dec 24 07:17:53 UTC 2015
On 12/21/2015 11:15 AM, Sander Kuusemets wrote:
> So what happened, is that after another administrator had extended the
> disk from VMWare, I tried to extend it from the OS side.
...
> Now's when the problems happened. After writing the partition table I
> got the usual "Busy" error. But I needed to do this without downtime.
> So, what did I try to get the kernel acknowledge the partition size
> change:
...
> * partprobe -s
Well, partprobe is the standard advice for this situation, but I don't
think it actively does anything with the -s flag. That could have been
the problem, but I'm not certain.
> And while dmesg reported that it recognized the partition change, LVM
> did still not see it.
You didn't include "pvresize" in that list, so I presume you didn't do
it. That's the command that will inform LVM of the change.
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