[linux-lvm] lvremove does not remove /dev/mapper/...-cow... and ...-real...

[Tomas Dalebjork]

Hi.

I have noticed that if a thick snapshot device is created
# /sbin/lvcreate --size size --snapshot --name snap /dev/system/lvname
And later removed
# /sbin/lvremove system/lvname

Than the symbolic link files under /dev/mapper/ is not removed

This is applicable on RHEL7 and sometimes on RHEL6.

Is this a known bug?
Or why is the links still there?

Regards Tomas
Tomas Dalebjörk | CIO
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[Linda A. Walsh]

Post by Tomas Dalebjork
Hi.
I have noticed that if a thick snapshot device is created
# /sbin/lvcreate --size size --snapshot --name snap /dev/system/lvname
And later removed
# /sbin/lvremove system/lvname

----
It's been known to me, and I mentioned it a few-several years
back.

I use dmsetup to remove those extra partitions after ensuring they
are no longer active.