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From 62e80840d9e18319b080e183201d509a2b78b40f Mon Sep 17 00:00:00 2001
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Message-Id: <62e80840d9e18319b080e183201d509a2b78b40f@dist-git>
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From: John Ferlan <jferlan@redhat.com>
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Date: Mon, 27 Aug 2018 08:23:52 -0400
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Subject: [PATCH] storage: Add --shrink to qemu-img command when shrinking vol
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://bugzilla.redhat.com/show_bug.cgi?id=1613746
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When shrinking the capacity of a qcow2 or luks volume using
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the qemu-img program, the --shrink qualifier must be added.
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Signed-off-by: John Ferlan <jferlan@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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(cherry picked from commit b04d1b6a35f9fb826f7bb83fdac364a127ec75ca)
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https: //bugzilla.redhat.com/show_bug.cgi?id=1622534
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Reviewed-by: Erik Skultety <eskultet@redhat.com>
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---
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src/storage/storage_util.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
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index a701a75702..5dc22d3182 100644
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--- a/src/storage/storage_util.c
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+++ b/src/storage/storage_util.c
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@@ -2287,12 +2287,12 @@ storageBackendResizeQemuImg(virStoragePoolObjPtr pool,
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* a multiple of 512 */
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capacity = VIR_ROUND_UP(capacity, 512);
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- cmd = virCommandNew(img_tool);
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+ cmd = virCommandNewArgList(img_tool, "resize", NULL);
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+ if (capacity < vol->target.capacity)
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+ virCommandAddArg(cmd, "--shrink");
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if (!vol->target.encryption) {
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- virCommandAddArgList(cmd, "resize", vol->target.path, NULL);
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+ virCommandAddArg(cmd, vol->target.path);
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} else {
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- virCommandAddArg(cmd, "resize");
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-
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if (storageBackendCreateQemuImgSecretObject(cmd, secretPath,
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secretAlias) < 0)
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goto cleanup;
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--
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2.18.0
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