Logical Volume Management: LVM

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This time, I am going to show you how to use LVM for a Linear file system which can be extended, have space added to it and also how to build a RAID 5 using LVM. Note: Red Hat has removed the documentation from their LVM manuals for RHEL 9, and I think that is because of data loss issues with RAID on LVM.

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Licensed under Creative Commons: By Attribution 4.0 License

Licensed under Creative Commons: By Attribution 4.0 License

Werq by Kevin MacLeod

Industrial Cinematic by Kevin MacLeod

Music Used in this video
Licensed under Creative Commons: By Attribution 3.0 License

#lvm #raid5 #linux

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Very informative. I used to think that LVM is better than a flat file system because of the name. But if it gets confused by redundant information, I guess a normal system is better.

chrisbitus

thank you for making this video, it's quite helpful. but please in the future videos make the terminal full screen and the font size a little bigger

smko_

@DJ

I don't know if you actually changed anything for your audio but this video and the last one you did are sounding great.

If you did change something then thank you very much for addressing that. It makes a huge difference on my end.

cleightthejw

I thought fdisk was the DOS formatting/partitioning command.

justgivemethetruth

I never trusted LVM as a raid, always on hardware raid till used zfs, always thought lvm as easy to extended partition, well done DJ for this info video.

abobader

Can a pv be an iSCSI initiator? If so, would one be able to create a mirrored lv over the network?

esra_erimez

What happens if you lose a drive or multiple drives in a logical volume? Is the system smart enough to have some record in the kernel or device files that knows that and where the data is located and can access data on the drives that are still working? I'm thinking probably not, but it seems like that should be possible if file data is not spread across drives.

justgivemethetruth

It's fun (as always I admit)
A couple things deserves to be touched
1 sequential concatenation, is not the only way to do it. Otherwise you may gain some speed.
2 LVM-cache is cool thing to do. ( I actually has played with it for couple of years in prod )

eugenesmirnov

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