Arch Linux

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Is LVM2 broken?

[root@killterm3 ~]# modprobe dm-mod
[root@killterm3 ~]# pvcreate --metadatasize 250k /dev/sdf2
  Writing physical volume data to disk "/dev/sdf2"
  Physical volume "/dev/sdf2" successfully created
[root@killterm3 ~]# vgcreate ultrakid /dev/sdf2
  Volume group "ultrakid" successfully created
[root@killterm3 ~]# lvcreate -L 10G ultrakid -n encrypted
  /dev/mapper/ultrakid-encrypted: open failed: No such file or directory
  /dev/ultrakid/encrypted: not found: device not cleared
  Aborting. Failed to wipe start of new LV.
  Unable to deactivate open ultrakid-encrypted (254:0)
  Unable to deactivate failed new LV. Manual intervention required.
[root@killterm3 ~]# file /dev/mapper/ultrakid-encrypted
/dev/mapper/ultrakid-encrypted: symbolic link to `../dm-0'
[root@killterm3 ~]# file /dev/dm-0
/dev/dm-0: block special

The device is there.  What's going on?

rowdog

Member

From: East Texas

Registered: 2009-08-19

Posts: 118

Re: Is LVM2 broken?

I've looked over your commands and I don't see anything obviously wrong. The only thing that stands out is that you modify the size of the metadata. I wonder if 250k is a sane size? Why are you changing that? You do know that the LVM metadata isn't the same thing as a journal on ext3 or ext4 right? I think the metadata is what delayed any responses here because few, if any of us, are tweaking that parameter and the rest seems okay.

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Is LVM2 broken?

Yeah, I suppose I'll keep trying.  I'm using 250k for metadata to align my LVM2 system to the 128k erase block size my USB flash drive uses.

alphaniner

Member

From: Ancapistan

Registered: 2010-07-12

Posts: 2,810

Re: Is LVM2 broken?

Someone else posted about a nearly identical issue here.  I suggested he try the verbose and debug flags, but he never responded.

BTW, this is probably all my fault, because I just migrated to LVM and the Universe hates me.

---

But whether the Constitution really be one thing, or another, this much is certain - that it has either authorized such a government as we have had, or has been powerless to prevent it. In either case, it is unfit to exist.
-Lysander Spooner