What is the proper way to shrink a LVM partition?

partition lvm

1,814

I'm not sure if you're just trying to learn using these tools or are trying to get something done, in either case I think I'd encourage you to use gparted instead of doing it using the straight commands in this manner.

Use GParted to resize the LVM physical volume. GParted won't let you shrink the LVM physical volume to a size smaller than what the unallocated space allows.

References

1,814

LosManos

Updated on September 18, 2022

Comments

LosManos almost 2 years
I just can't get an object out of Neo4j through Neo4jClient and Cypher.
```
var client = new GraphClient(new Uri("http://mymachine:7474/db/data"));
client.Connect();
var myList = client.RootNode.StartCypher("root")
    .Match("root-[:RELATED_TO]->(user)")
    .Return<User>("user").Results;
```
I get a User object in myList[0] alright but its properties are empty.

I get the same (object with empty properties) through
```
client.ExecuteGetCypherResults<User>(
    new CypherQuery("start n=node(1) return n;",null, CypherResultMode.Set)
);
```
What obvious thing have I overlooked?

(Neo4j 1.8 MS5, Neo4jClient 1.0.0.388)

/Neo4jClient/Neo4j noob.
- slm over 10 years
  
  blog.shadypixel.com/how-to-shrink-an-lvm-volume-safely
- Question Overflow over 10 years
  
  @slm, I am referring to the physical partition, not logical volume.
- slm over 10 years
  
  They're called VG & LV. Volume Group and Logical Volumes.
- Question Overflow over 10 years
  
  @slm, I am referring to shrinking a partition such as /dev/sda3 containing the VG and LVs.
- slm over 10 years
  
  I believe to reduce the VG so you can eventually shrink the partition they're on using fdisk you'd need to follow this: unix.stackexchange.com/questions/67702/…
- slm over 10 years
  
  Are you just trying to learn using these tools or are you trying to get something done? I think I'd encourage you to use gparted instead of doing it in this manner.
- 41754 over 10 years
  
  But obviously to use gparted or, if available, partitionmanager, only after reducing the VG, right?
- Question Overflow over 10 years
  
  @slm, thanks for the link, pvresize is what I am looking for.
LosManos almost 11 years

Googling the same question a year later I found another Culprit. The fields of the User class must be public. Internal is not enough.
Tatham Oddie over 10 years

Instead of using Return<Node<User>>, then throwing it away with the Select call, just use Return<User>.
Jaeda about 6 years

Gparted doesn't support LVM2 as stated here and on my personal experience. It even doesn't show used space on LVM partition properly.
Gaia about 6 years

according to this Gparted does support most operations on LVM2: gparted.org/features.php
slm about 6 years

Yeah I'm not sure why that comment was left. LVM 1/2 is supported.
Admin about 2 years

"9.5. Using the LVM utility system-config-lvm" link is down.
Admin about 2 years

@Scorpion - ty fixed