Re: [PATCH] qemu: domain: Log some useful data in qemuDomainStorageSourceAccessModify

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On Wed, Jun 12, 2019 at 01:53:39PM +0200, Peter Krempa wrote:
Log the flags passed to the function in a exploded state so that it's

s/a exploded/an exploded/

easily visible what's happening to the image.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
src/qemu/qemu_domain.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 2095191cde..d28cfa4f42 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -9339,6 +9339,9 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
    int ret = -1;
    virErrorPtr orig_err = NULL;
    bool chain = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_CHAIN;
+    bool force_ro = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_ONLY;
+    bool force_rw = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_WRITE;
+    bool revoke = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_REVOKE;
    int rc;
    bool was_readonly = src->readonly;
    bool revoke_cgroup = false;
@@ -9346,14 +9349,18 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
    bool revoke_namespace = false;
    bool revoke_lockspace = false;

-    if (flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_ONLY)
+    VIR_DEBUG("VM: '%s', src: '%s', readonly: '%d, force_ro: '%d', force_rw: '%d', revoke: '%d', chain: '%d'",

We usually use lowercase 'vm' in the logs. Also, the readonly attribue
has a mismatched attribute.

How about the more compact format we use elsewhere:
   VIR_DEBUG("VM='%s', src='%s', readonly=%d force_ro=%d force_rw=%d revoke=%d chain=%d".

+              vm->def->name, NULLSTR(src->path), src->readonly, force_ro,
+              force_rw, revoke, chain);
+

Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>

Jano

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