Live GPT partition expansion

[Alex Wanderley]

Hello,

Has anybody worked on expanding GPT partitions live, without unmounting the associated xfs or ext4 filesystem? (We don't use LVM, by the way.)

I have a working playbook that does that during VM deployments using the parted module; but because that playbook runs for new servers, I can unmount the FS no problem (parted requires FS to be unmounted) and proceed with the partition/FS expansion.

But for this project, I need to do that for existing servers which can't afford unmounting their FS...

Shall I have to resource to calling a shell script?

(We've been successfully using "fdisk" to do that already, from the command line.)

Any tip/input would be truly appreciated...

Regards,

Alex

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Alex Wanderley Application and Infrastructure Analyst II Acting Team Lead Storage and Backup Solutions Financial and Corporate Services | Open City and Technology     780-496-4156  Office 780-819-0273  Mobile   City of Edmonton Century Place, 19th Floor 9803 102A Avenue NW Edmonton AB, T5J 3A3   All information contained in this email post is proprietary to the City of Edmonton, confidential and intended only for the addressed recipient. If you have received this post in error, please disregard the contents, inform the sender of the misdirection, and remove it from your system. The copying, dissemination or distribution of this email, if misdirected, is strictly prohibited.

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[Stephen Maher]

Hi Alex, sounds similar to something we have done for a client, I can't share the role but this link is pretty much what you need to do. I did find some older systems did not always pick up the new partition sizes when partprobe was run  and they have reboot task to remedy this but it would be done under a change window.

https://superuser.com/questions/660309/live-resize-of-a-gpt-partition-on-linux

Cheers.