Introduce flag for the block commit API to allow the commit operation to
leave the chain relatively addressed. Also adds a virsh switch to enable
this behavior.
---
include/libvirt/libvirt.h.in | 4 ++++
tools/virsh-domain.c | 7 +++++++
tools/virsh.pod | 6 ++++--
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 260c971..2df7fc8 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -2588,6 +2588,10 @@ typedef enum {
VIR_DOMAIN_BLOCK_COMMIT_DELETE = 1 << 1, /* Delete any files that are now
invalid after their contents
have been committed */
+ VIR_DOMAIN_BLOCK_COMMIT_RELATIVE = 1 << 2, /* try to keep the backing chain
+ relative if the components
+ removed by the commit are
+ already relative */
} virDomainBlockCommitFlags;
int virDomainBlockCommit(virDomainPtr dom, const char *disk, const char *base,
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 84a6706..5c3a142 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -1492,6 +1492,8 @@ blockJobImpl(vshControl *ctl, const vshCmd *cmd,
flags |= VIR_DOMAIN_BLOCK_COMMIT_SHALLOW;
if (vshCommandOptBool(cmd, "delete"))
flags |= VIR_DOMAIN_BLOCK_COMMIT_DELETE;
+ if (vshCommandOptBool(cmd, "keep-relative"))
+ flags |= VIR_DOMAIN_BLOCK_COMMIT_RELATIVE;
ret = virDomainBlockCommit(dom, path, base, top, bandwidth, flags);
break;
case VSH_CMD_BLOCK_JOB_COPY:
@@ -1612,6 +1614,11 @@ static const vshCmdOptDef opts_block_commit[] = {
.type = VSH_OT_BOOL,
.help = N_("with --wait, don't wait for cancel to finish")
},
+ {.name = "keep-relative",
+ .type = VSH_OT_BOOL,
+ .help = N_("keep the backing chain relative if it was relatively "
+ "referenced if it was before")
+ },
{.name = NULL}
};
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 02671b4..03b94a5 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -767,7 +767,7 @@ address of virtual interface (such as I<detach-interface> or
I<domif-setlink>) will accept the MAC address printed by this command.
=item B<blockcommit> I<domain> I<path> [I<bandwidth>]
-{[I<base>] | [I<--shallow>]} [I<top>] [I<--delete>]
+{[I<base>] | [I<--shallow>]} [I<top>] [I<--delete>] [I<--keep-relative>]
[I<--wait> [I<--verbose>] [I<--timeout> B<seconds>] [I<--async>]]
Reduce the length of a backing image chain, by committing changes at the
@@ -779,7 +779,9 @@ I<--shallow> can be used instead of I<base> to specify the immediate
backing file of the resulting top image to be committed. The files
being committed are rendered invalid, possibly as soon as the operation
starts; using the I<--delete> flag will remove these files at the successful
-completion of the commit operation.
+completion of the commit operation. Using the I<--keep-relative> flag
+will try to keep the backing chain names relative (if they were
+relative before).
By default, this command returns as soon as possible, and data for
the entire disk is committed in the background; the progress of the
--
1.9.3
--
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