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From 829716665e195f34e484c1aec691a02d5035ae3a Mon Sep 17 00:00:00 2001
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Message-Id: <829716665e195f34e484c1aec691a02d5035ae3a@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Fri, 16 Aug 2019 14:36:57 +0200
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Subject: [PATCH] qemu: Allow suppressing errors from qemuStorageLimitsRefresh
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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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qemuStorageLimitsRefresh uses qemuDomainStorageOpenStat internally and
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there are callers which don't care about the error. Propagate the
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skipInaccessible flag so that we can log less errors.
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Callers currently don't care about the return value change.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit ea26e22f94cea989b566e13e1930d76e06baf2c9)
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https: //bugzilla.redhat.com/show_bug.cgi?id=1724808
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Message-Id: <dd9323d0f10b7ad2992c389d37d1a643040ba743.1565958906.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 src/qemu/qemu_driver.c | 20 +++++++++++++-------
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 1 file changed, 13 insertions(+), 7 deletions(-)
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diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
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index 72c75e308b..88a9f565c4 100644
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--- a/src/qemu/qemu_driver.c
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+++ b/src/qemu/qemu_driver.c
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@@ -11894,6 +11894,7 @@ qemuDomainStorageUpdatePhysical(virQEMUDriverPtr driver,
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  * @cfg: driver configuration data
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  * @vm: domain object
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  * @src: storage source data
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+ * @skipInaccessible: Suppress reporting of common errors when accessing @src
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  *
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  * Refresh the capacity and allocation limits of a given storage source.
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  *
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@@ -11915,22 +11916,27 @@ qemuDomainStorageUpdatePhysical(virQEMUDriverPtr driver,
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  * is sparse, but the amount of sparseness changes due to writes or
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  * punching holes), and physical size of a non-raw file can change.
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  *
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- * Returns 0 on success, -1 on failure
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+ * Returns 1 if @src was successfully updated, 0 if @src can't be opened and
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+ * @skipInaccessible is true (no errors are reported) or -1 otherwise (errors
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+ * are reported).
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  */
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 static int
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 qemuStorageLimitsRefresh(virQEMUDriverPtr driver,
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                          virQEMUDriverConfigPtr cfg,
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                          virDomainObjPtr vm,
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-                         virStorageSourcePtr src)
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+                         virStorageSourcePtr src,
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+                         bool skipInaccessible)
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 {
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+    int rc;
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     int ret = -1;
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     int fd = -1;
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     struct stat sb;
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     char *buf = NULL;
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     ssize_t len;
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-    if (qemuDomainStorageOpenStat(driver, cfg, vm, src, &fd, &sb, false) < 0)
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-        goto cleanup;
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+    if ((rc = qemuDomainStorageOpenStat(driver, cfg, vm, src, &fd, &sb,
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+                                        skipInaccessible)) <= 0)
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+        return rc;
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     if (virStorageSourceIsLocalStorage(src)) {
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         if ((len = virFileReadHeaderFD(fd, VIR_STORAGE_MAX_HEADER, &buf)) < 0) {
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@@ -11958,7 +11964,7 @@ qemuStorageLimitsRefresh(virQEMUDriverPtr driver,
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         S_ISBLK(sb.st_mode))
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         src->allocation = 0;
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-    ret = 0;
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+    ret = 1;
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  cleanup:
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     VIR_FREE(buf);
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@@ -12011,7 +12017,7 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
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     /* for inactive domains we have to peek into the files */
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     if (!virDomainObjIsActive(vm)) {
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-        if ((qemuStorageLimitsRefresh(driver, cfg, vm, disk->src)) < 0)
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+        if ((qemuStorageLimitsRefresh(driver, cfg, vm, disk->src, false)) < 0)
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             goto endjob;
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         info->capacity = disk->src->capacity;
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@@ -20029,7 +20035,7 @@ qemuDomainGetStatsOneBlockFallback(virQEMUDriverPtr driver,
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     if (virStorageSourceIsEmpty(src))
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         return 0;
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-    if (qemuStorageLimitsRefresh(driver, cfg, dom, src) < 0) {
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+    if (qemuStorageLimitsRefresh(driver, cfg, dom, src, false) < 0) {
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         virResetLastError();
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         return 0;
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     }
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-- 
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2.22.1
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