The main reason why people advise ZFS is the fact that ZFS offers better protection against data corruption as compared to other file systems. It has extra defences build-in that protect your data in a manner that other free file systems cannot 2. LVM is storage distributed across several physical disks, which tempts people into thinking it has the same benefits as RAID. LVM cache is a caching mechanism used to improve the performance of a logical volume LV. You can get LV information by using the lvdisplay command.
If you have any logical volumes they will appear as such as well as additional information about that volume such as the path, logical volume name, volume group name, size, etc. Show activity on this post. Skip to content Android Windows Linux Apple. Home » Linux. See also How do I get rid of Chrome extensions by administrator? Presumably the VMs run somewhere, and the distros are general enough to support bare metal.
So your thin provisioning has shifted the problem there. And I'm not even sure that any of those tools help me deal with the encryption part of the setup.
That's more than a few commands, and each of them have a lengthy list of options. Not to mention all the extra lvm-specific terminology. There's a TON going on there. I'm sure there are plenty of environments where the extra capabilities are useful, but I don't see how you can deny that there's a dramatic increase in the complexity of using it. Well, it is a whole layer of indirection. So in some cases it is totally unneeded complexity and other times it adds valuable flexibility.
If you just have a few local physical disks, that's very different from running on some virtual devices provided by your storage array with its own layers or on some cloud thing where there are all kinds of virtual layers below.
I use it on servers and it has come through more than once, especially with VM's where our vsphere admins treat storage like rare and precious metals, though lately they have been a lot better to deal with.
Do you actually use LVM? Ars Scholae Palatinae et Subscriptor. Jim Salter. Jim Salter wrote:. Ars Praefectus et Subscriptor. Utwig wrote:. Ars Legatus Legionis et Subscriptor. I use LVM everywhere, except where I can't cloud providers. Tribus: Sr. Sunner wrote:. You should be able to just pvresize the existing pv, no? Last edited by sryan2k1 on Sun Feb 24, pm. Which is useless with modern VMs and thin provisioning.
I don't use LVM on desktop. Posted: Tue Feb 19, am. Posted: Tue Feb 19, pm. Posted: Wed Feb 20, am. Posted: Wed Feb 20, pm. What can I say? Lucky me, right? Registered: Mar 14, Posts: Ubuntu server, and Linux servers in general compete with other Unixes and Microsoft Windows. ZFS is a killer-app for Solaris, as it allows straightforward administration of a pool of disks, while giving intelligent performance and data integrity. There is, however, one thing that I found it good for.
LVM works great for striping multiple drives together for raid 0 type configurations. Skip to content Android Windows Linux Apple. Home » Linux. Related posts: Best answer: How do I install fonts on Ubuntu?
How do I change text color in Ubuntu terminal? How do I install fonts on Ubuntu Server? How do I install fonts from terminal ubuntu? Understanding the trade-offs should be part of the planning process for using a more complicated LVM configuration. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Why use LVM? It creates more borders less freedom Ask Question. Asked 2 years, 3 months ago. Active 2 years, 3 months ago. Viewed 2k times. I have a linux server which runs in a VM. The hypervisor is VMWare. It is great that you can do a lot of interesting things with LVM. But why? Swapping could get done into a file. If I use one block device with one filesystem it is less likely to run out of disk space. A reboot at night is always possible.
Improve this question. Anon 1, 9 9 silver badges 23 23 bronze badges. Add a comment. Active Oldest Votes. Using LVM in general enables several features. Just a couple: Extending a volume is one step and online: lvextend --resize. Partitioning is not required. Without LVM, the common use case of resizing root fs requires downtime and probably editing partition tables from a second system. Snapshots are always available, even without such a feature on the storage system or hypervisor.
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