Bug 887826

Summary:	RFE: virt-sparsify cannot handle multi-disk virtual machines (eg. if they use LVM, MD, LDM, etc)
Product:	[Community] Virtualization Tools	Reporter:	Richard W.M. Jones <rjones>
Component:	libguestfs	Assignee:	Richard W.M. Jones <rjones>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	Keywords:	Reopened
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2025-10-17 00:10:00 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Richard W.M. Jones 2012-12-17 12:22:53 UTC

Description of problem:

virt-sparsify takes 'indisk' and 'outdisk' parameters.  This
is a problem for multi-disk virtual machines, especially ones
using LVM, MD, LDM or other volume management where a single
filesystem might be spread over multiple disks.

I have a 3 disk Windows VM using LDM that simply cannot be
sparsified properly, because it's not possible to mount the
LDM partitions that take up the majority of the disk space.

Version-Release number of selected component (if applicable):

libguestfs 1.21.0

Comment 1 Richard W.M. Jones 2012-12-17 12:43:27 UTC

I documented the problem upstream:
https://github.com/libguestfs/libguestfs/commit/6f02e33c6fbf2f14ba11ef07cb078ad6f6b2fea3
(Note this is just documentation, NOT a fix)

Comment 2 Red Hat Bugzilla 2025-10-17 00:10:00 UTC

This product has been discontinued or is no longer tracked in Red Hat Bugzilla.

Comment 3 Alasdair Kergon 2025-10-17 12:52:13 UTC

Reopening because Virtualization Tools has not been discontinued.