November 2017
Intermediate to advanced
494 pages
14h 29m
English
Content preview from Mastering Proxmox - Third Edition
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Issue – the fstrim command does not trim unused blocks for the Ceph storage
To properly trim unused blocks for virtual disks stored on the Ceph storage, perform the following steps:
- Use a virtio disk type for a virtual disk.
- Enable the discard option through <vm_id>.conf. Add discard=on to the drive properties of virtio0, like the following:
# <rbd_storage>:<virtual_disk>,cache=writethrough, size=50G,discard=on
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.