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libvirt/libxl-set-cach-mode.patch
James Fehlig 4e3b0799c4 Accepting request 1068569 from home:jfehlig:branches:Virtualization
- Update to libvirt 9.1.0
  - Many incremental improvements and bug fixes, see
    https://libvirt.org/news.html#v9-1-0-2023-03-01
  - spec: Remove obsolete Groups tag
  - spec: Integrate upstream spec file changes that split the
    libvirt-daemon package, allowing more modular, customized
    installations
  - spec: New subpackages libvirt-daemon-common, libvirt-daemon-lock,
    libvirt-daemon-log, libvirt-daemon-proxy, and
    libvirt-daemon-plugin-lockd
  - spec: Renamed subpackage libvirt-lock-sanlock to
    libvirt-daemon-plugin-sanlock
  - Dropped patches:
    ef482951-apparmor-Allow-umount-dev.patch,
    d6a8b9ee-qemu-Fix-managed-no-when-creating-ethdev.patch,
    c3f16cea-qemu-cleanup-label-on-umount-failure.patch,
    697c16e3-qemu_process-better-debug-message.patch,
    5155ab4b-qemu_namespace-nested-mounts-when-umount.patch

OBS-URL: https://build.opensuse.org/request/show/1068569
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=968
2023-03-02 00:49:27 +00:00

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Diff

From 9b37c98cf768eb02afb384522a72ec36850876bf Mon Sep 17 00:00:00 2001
From: Jim Fehlig <jfehlig@suse.com>
Date: Tue, 5 Jul 2022 11:27:47 -0600
Subject: libxl: Allow setting disk cache mode
https://bugzilla.novell.com/show_bug.cgi?id=879425
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
---
src/libxl/libxl_conf.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
Index: libvirt-9.1.0/src/libxl/libxl_conf.c
===================================================================
--- libvirt-9.1.0.orig/src/libxl/libxl_conf.c
+++ libvirt-9.1.0/src/libxl/libxl_conf.c
@@ -949,6 +949,28 @@ libxlDiskSetDiscard(libxl_device_disk *x
}
}
+static void
+libxlDiskSetCacheMode(libxl_device_disk *x_disk, int cachemode)
+{
+ switch (cachemode) {
+#if defined(LIBXL_HAVE_LIBXL_DEVICE_DISK_DISABLE_FLUSH_MAGIC)
+ case VIR_DOMAIN_DISK_CACHE_UNSAFE:
+ if (x_disk->readwrite)
+ x_disk->readwrite = (x_disk->readwrite & LIBXL_HAVE_LIBXL_DEVICE_DISK_DISABLE_FLUSH_MASK) | LIBXL_HAVE_LIBXL_DEVICE_DISK_DISABLE_FLUSH_MAGIC;
+ break;
+#endif
+ case VIR_DOMAIN_DISK_CACHE_DIRECTSYNC:
+ x_disk->direct_io_safe = true;
+ break;
+ case VIR_DOMAIN_DISK_CACHE_DEFAULT:
+ case VIR_DOMAIN_DISK_CACHE_DISABLE:
+ case VIR_DOMAIN_DISK_CACHE_WRITETHRU:
+ case VIR_DOMAIN_DISK_CACHE_WRITEBACK:
+ default:
+ break;
+ }
+}
+
static char *
libxlMakeNetworkDiskSrcStr(virStorageSource *src,
const char *username,
@@ -1183,6 +1205,7 @@ libxlMakeDisk(virDomainDiskDef *l_disk,
x_disk->readwrite = !l_disk->src->readonly;
x_disk->is_cdrom = l_disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM ? 1 : 0;
libxlDiskSetDiscard(x_disk, l_disk->discard);
+ libxlDiskSetCacheMode(x_disk, l_disk->cachemode);
/* An empty CDROM must have the empty format, otherwise libxl fails. */
if (x_disk->is_cdrom && !x_disk->pdev_path)
x_disk->format = LIBXL_DISK_FORMAT_EMPTY;