[libvirt] [PATCH] libxl: support vscsi
This uses the API version of the proposed vscsi support in libxl (v4): http://lists.xenproject.org/archives/html/xen-devel/2015-04/msg01949.html Is there anything else that needs to be done in libvirt? Right now libvirt scsi support is very simple minded, no support at all to describe host devices with persistant names. This patch got very little runtime testing up to now... Signed-off-by: Olaf Hering <olaf@aepfle.de> --- src/libxl/libxl_conf.c | 59 +++++++++++++++++ src/libxl/libxl_conf.h | 1 + src/libxl/libxl_domain.c | 2 +- src/libxl/libxl_driver.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 228 insertions(+), 1 deletion(-) diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c index f9bb5ed..7964e8b 100644 --- a/src/libxl/libxl_conf.c +++ b/src/libxl/libxl_conf.c @@ -1591,6 +1591,61 @@ libxlMakePCIList(virDomainDefPtr def, libxl_domain_config *d_config) } static int +libxlMakeVscsiList(libxl_ctx *ctx, + XLU_Config *xlu, + virDomainDefPtr def, + libxl_domain_config *d_config) +{ + virDomainHostdevDefPtr *l_hostdevs = def->hostdevs; + size_t i, nhostdevs = def->nhostdevs; + virDomainHostdevDefPtr hostdev; + virDomainHostdevSubsysSCSIPtr scsisrc; + char *str; + int rc = 0; + + if (nhostdevs == 0) + return 0; + + for (i = 0; i < nhostdevs; i++) { + hostdev = l_hostdevs[i]; + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS) + continue; + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) + continue; + scsisrc = &hostdev->source.subsys.u.scsi; + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + continue; +#if defined(LIBXL_HAVE_VSCSI) + if (virAsprintf(&str, "%s:%u:%u:%u,%u:%u:%u:%u%s", + scsisrc->u.host.adapter + strlen("scsi_host"), + scsisrc->u.host.bus, + scsisrc->u.host.target, + scsisrc->u.host.unit, + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit, + scsisrc->rawio == VIR_TRISTATE_BOOL_YES ? ",feature-host" : "") < 0) { + goto error; + }; + rc = xlu_vscsi_config_add(xlu, ctx, str, &d_config->num_vscsis, &d_config->vscsis); + VIR_FREE(str); + if (rc) + goto error; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + goto error; +#endif + } + + return 0; + + error: + return -1; +} + +static int libxlMakeVideo(virDomainDefPtr def, libxl_domain_config *d_config) { @@ -1724,6 +1779,7 @@ int libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, virDomainDefPtr def, libxl_ctx *ctx, + XLU_Config *xlu, libxl_domain_config *d_config) { libxl_domain_config_init(d_config); @@ -1746,6 +1802,9 @@ libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, if (libxlMakePCIList(def, d_config) < 0) return -1; + if (libxlMakeVscsiList(ctx, xlu, def, d_config) < 0) + return -1; + /* * Now that any potential VFBs are defined, update the build info with * the data of the primary display. Some day libxl might implicitely do diff --git a/src/libxl/libxl_conf.h b/src/libxl/libxl_conf.h index bdc68d4..94a3046 100644 --- a/src/libxl/libxl_conf.h +++ b/src/libxl/libxl_conf.h @@ -205,6 +205,7 @@ int libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, virDomainDefPtr def, libxl_ctx *ctx, + XLU_Config *xlu, libxl_domain_config *d_config); static inline void diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index 3039427..537e370 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -950,7 +950,7 @@ libxlDomainStart(libxlDriverPrivatePtr driver, virDomainObjPtr vm, } if (libxlBuildDomainConfig(driver->reservedVNCPorts, vm->def, - cfg->ctx, &d_config) < 0) + cfg->ctx, cfg->xlu, &d_config) < 0) goto cleanup; if (cfg->autoballoon && libxlDomainFreeMem(cfg->ctx, &d_config) < 0) diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index f915f91..424150f 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -2943,6 +2943,97 @@ libxlDomainAttachHostPCIDevice(libxlDriverPrivatePtr driver, } static int +libxlDomainAttachHostSCSIDevice(libxlDriverPrivatePtr driver, + virDomainObjPtr vm, + virDomainHostdevDefPtr hostdev) +{ +#if defined(LIBXL_HAVE_VSCSI) + libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver); + libxl_device_vscsi vscsidev; + virDomainHostdevDefPtr found; + virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr; + virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi; + char *str = NULL; + int ret = -1; + + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + return -1; + + libxl_device_vscsi_init(&vscsidev); + + if (virDomainHostdevFind(vm->def, hostdev, &found) >= 0) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("target scsi device %u:%u:%u:%u already exists"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto cleanup; + } + + if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1) < 0) + goto cleanup; + + if (virHostdevPrepareSCSIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1) < 0) + goto cleanup; + + if (virAsprintf(&str, "%s:%u:%u:%u,%u:%u:%u:%u%s", + scsisrc->u.host.adapter + strlen("scsi_host"), + scsisrc->u.host.bus, + scsisrc->u.host.target, + scsisrc->u.host.unit, + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit, + scsisrc->rawio == VIR_TRISTATE_BOOL_YES ? + ",feature-host" : "") < 0) { + goto error; + }; + + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", str); + + if (xlu_vscsi_get_host(cfg->xlu, cfg->ctx, vm->def->id, str, &vscsidev) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxutil failed to parse scsi device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + } + + if (libxl_device_vscsi_add(cfg->ctx, vm->def->id, &vscsidev, NULL) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxenlight failed to attach scsi device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto error; + } + + vm->def->hostdevs[vm->def->nhostdevs++] = hostdev; + ret = 0; + goto cleanup; + + error: + virHostdevReAttachSCSIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1); + + cleanup: + VIR_FREE(str); + virObjectUnref(cfg); + libxl_device_vscsi_dispose(&vscsidev); + return ret; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + return -1; +#endif +} + +static int libxlDomainAttachHostDevice(libxlDriverPrivatePtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev) @@ -2960,6 +3051,11 @@ libxlDomainAttachHostDevice(libxlDriverPrivatePtr driver, return -1; break; + case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI: + if (libxlDomainAttachHostSCSIDevice(driver, vm, hostdev) < 0) + return -1; + break; + default: virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("hostdev subsys type '%s' not supported"), @@ -3284,6 +3380,74 @@ libxlDomainDetachHostPCIDevice(libxlDriverPrivatePtr driver, } static int +libxlDomainDetachHostSCSIDevice(libxlDriverPrivatePtr driver, + virDomainObjPtr vm, + virDomainHostdevDefPtr hostdev) +{ +#if defined(LIBXL_HAVE_VSCSI) + libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver); + virDomainHostdevDefPtr detach; + int idx; + virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr; + virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi; + int ret = -1; + char *str = NULL; + + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + return -1; + + idx = virDomainHostdevFind(vm->def, hostdev, &detach); + if (idx < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("target scsi device %u:%u:%u:%u not found"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto cleanup; + } + + if (virAsprintf(&str, "%u:%u:%u:%u", + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit) < 0) { + goto error; + }; + + if (xlu_vscsi_detach(cfg->xlu, cfg->ctx, vm->def->id, str) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxenlight failed to detach pci device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto error; + } + + + virDomainHostdevRemove(vm->def, idx); + + virHostdevReAttachPCIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1, NULL); + + ret = 0; + + error: + VIR_FREE(str); + virDomainHostdevDefFree(detach); + + cleanup: + virObjectUnref(cfg); + return ret; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + return -1; +#endif +} + +static int libxlDomainDetachHostDevice(libxlDriverPrivatePtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev) @@ -3301,6 +3465,9 @@ libxlDomainDetachHostDevice(libxlDriverPrivatePtr driver, case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: return libxlDomainDetachHostPCIDevice(driver, vm, hostdev); + case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI: + return libxlDomainDetachHostSCSIDevice(driver, vm, hostdev); + default: virReportError(VIR_ERR_INTERNAL_ERROR, _("unexpected hostdev type %d"), subsys->type);
Olaf Hering wrote:
This uses the API version of the proposed vscsi support in libxl (v4): http://lists.xenproject.org/archives/html/xen-devel/2015-04/msg01949.html
We'll need to wait for that to land before committing this work to libvirt.git, but thanks posting it for early review and feedback!
Is there anything else that needs to be done in libvirt?
You'll need to add support for domXML <-> xl config conversion in src/xenconfig/, along with tests for the conversion code. As you're probably aware, src/xenconfig supports (among other things) 'virsh domxml-{to,from}-native xen-{xm,xl,sxpr} ...'.
Right now libvirt scsi support is very simple minded, no support at all to describe host devices with persistant names.
I'm not that familiar with the internals of libvirt's scsi support. Hopefully others can point out anything else you might have missed.
This patch got very little runtime testing up to now...
Seems very little compile testing, at least with -Werror and LIBXL_HAVE_VSCSI not defined... :)
Signed-off-by: Olaf Hering <olaf@aepfle.de> --- src/libxl/libxl_conf.c | 59 +++++++++++++++++ src/libxl/libxl_conf.h | 1 + src/libxl/libxl_domain.c | 2 +- src/libxl/libxl_driver.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 228 insertions(+), 1 deletion(-)
diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c index f9bb5ed..7964e8b 100644 --- a/src/libxl/libxl_conf.c +++ b/src/libxl/libxl_conf.c @@ -1591,6 +1591,61 @@ libxlMakePCIList(virDomainDefPtr def, libxl_domain_config *d_config) }
static int +libxlMakeVscsiList(libxl_ctx *ctx, + XLU_Config *xlu, + virDomainDefPtr def, + libxl_domain_config *d_config)
Unused parameters when LIBXL_HAVE_VSCSI is not defined.
+{ + virDomainHostdevDefPtr *l_hostdevs = def->hostdevs; + size_t i, nhostdevs = def->nhostdevs; + virDomainHostdevDefPtr hostdev; + virDomainHostdevSubsysSCSIPtr scsisrc; + char *str; + int rc = 0;
Unused variables when LIBXL_HAVE_VSCSI is not defined. Should this whole function be wrapped in LIBXL_HAVE_VSCSI? E.g. #if defined(LIBXL_HAVE_VSCSI) static int libxlMakeVscsiList(libxl_ctx *ctx, XLU_Config *xlu, virDomainDefPtr def, libxl_domain_config *d_config) { ... } #else static int libxlMakeVscsiList(libxl_ctx *ctx, XLU_Config *xlu, virDomainDefPtr def, libxl_domain_config *d_config) { error not supported }
+ + if (nhostdevs == 0) + return 0; + + for (i = 0; i < nhostdevs; i++) { + hostdev = l_hostdevs[i]; + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS) + continue; + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) + continue; + scsisrc = &hostdev->source.subsys.u.scsi; + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + continue; +#if defined(LIBXL_HAVE_VSCSI) + if (virAsprintf(&str, "%s:%u:%u:%u,%u:%u:%u:%u%s", + scsisrc->u.host.adapter + strlen("scsi_host"), + scsisrc->u.host.bus, + scsisrc->u.host.target, + scsisrc->u.host.unit, + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit, + scsisrc->rawio == VIR_TRISTATE_BOOL_YES ? ",feature-host" : "") < 0) { + goto error; + }; + rc = xlu_vscsi_config_add(xlu, ctx, str, &d_config->num_vscsis, &d_config->vscsis);
You'll need to declare xlu_vscsi_config_add in libxl_conf.h, similar to xlu_cfg_{destroy,init}.
+ VIR_FREE(str); + if (rc) + goto error; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + goto error; +#endif + } + + return 0; + + error: + return -1;
Nothing is done here. Why not 'return -1' where the errors occur?
+} + +static int libxlMakeVideo(virDomainDefPtr def, libxl_domain_config *d_config)
{ @@ -1724,6 +1779,7 @@ int libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, virDomainDefPtr def, libxl_ctx *ctx, + XLU_Config *xlu, libxl_domain_config *d_config)
I still have dreams of unit tests for this function https://www.redhat.com/archives/libvir-list/2015-January/msg00924.html But adding the XLU_Config parameter doesn't complicate that. The invoking test can declare and init an XLU_Config object.
{ libxl_domain_config_init(d_config); @@ -1746,6 +1802,9 @@ libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, if (libxlMakePCIList(def, d_config) < 0) return -1;
+ if (libxlMakeVscsiList(ctx, xlu, def, d_config) < 0) + return -1; + /* * Now that any potential VFBs are defined, update the build info with * the data of the primary display. Some day libxl might implicitely do diff --git a/src/libxl/libxl_conf.h b/src/libxl/libxl_conf.h index bdc68d4..94a3046 100644 --- a/src/libxl/libxl_conf.h +++ b/src/libxl/libxl_conf.h @@ -205,6 +205,7 @@ int libxlBuildDomainConfig(virPortAllocatorPtr graphicsports, virDomainDefPtr def, libxl_ctx *ctx, + XLU_Config *xlu, libxl_domain_config *d_config);
static inline void diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index 3039427..537e370 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -950,7 +950,7 @@ libxlDomainStart(libxlDriverPrivatePtr driver, virDomainObjPtr vm, }
if (libxlBuildDomainConfig(driver->reservedVNCPorts, vm->def, - cfg->ctx, &d_config) < 0) + cfg->ctx, cfg->xlu, &d_config) < 0) goto cleanup;
if (cfg->autoballoon && libxlDomainFreeMem(cfg->ctx, &d_config) < 0) diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index f915f91..424150f 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -2943,6 +2943,97 @@ libxlDomainAttachHostPCIDevice(libxlDriverPrivatePtr driver, }
static int +libxlDomainAttachHostSCSIDevice(libxlDriverPrivatePtr driver, + virDomainObjPtr vm, + virDomainHostdevDefPtr hostdev) +{ +#if defined(LIBXL_HAVE_VSCSI) + libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver); + libxl_device_vscsi vscsidev; + virDomainHostdevDefPtr found; + virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr; + virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi; + char *str = NULL; + int ret = -1; + + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + return -1; + + libxl_device_vscsi_init(&vscsidev); + + if (virDomainHostdevFind(vm->def, hostdev, &found) >= 0) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("target scsi device %u:%u:%u:%u already exists"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto cleanup; + } + + if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1) < 0) + goto cleanup; + + if (virHostdevPrepareSCSIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1) < 0) + goto cleanup; + + if (virAsprintf(&str, "%s:%u:%u:%u,%u:%u:%u:%u%s", + scsisrc->u.host.adapter + strlen("scsi_host"), + scsisrc->u.host.bus, + scsisrc->u.host.target, + scsisrc->u.host.unit, + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit, + scsisrc->rawio == VIR_TRISTATE_BOOL_YES ? + ",feature-host" : "") < 0) { + goto error; + }; + + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", str); + + if (xlu_vscsi_get_host(cfg->xlu, cfg->ctx, vm->def->id, str, &vscsidev) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxutil failed to parse scsi device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + } + + if (libxl_device_vscsi_add(cfg->ctx, vm->def->id, &vscsidev, NULL) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxenlight failed to attach scsi device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto error; + } + + vm->def->hostdevs[vm->def->nhostdevs++] = hostdev; + ret = 0; + goto cleanup; + + error: + virHostdevReAttachSCSIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1); + + cleanup: + VIR_FREE(str); + virObjectUnref(cfg); + libxl_device_vscsi_dispose(&vscsidev); + return ret; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + return -1;
Parameters are unused when LIBXL_HAVE_VSCSI is not defined.
+#endif +} + +static int libxlDomainAttachHostDevice(libxlDriverPrivatePtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev) @@ -2960,6 +3051,11 @@ libxlDomainAttachHostDevice(libxlDriverPrivatePtr driver, return -1; break;
+ case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI: + if (libxlDomainAttachHostSCSIDevice(driver, vm, hostdev) < 0) + return -1; + break; + default: virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("hostdev subsys type '%s' not supported"), @@ -3284,6 +3380,74 @@ libxlDomainDetachHostPCIDevice(libxlDriverPrivatePtr driver, }
static int +libxlDomainDetachHostSCSIDevice(libxlDriverPrivatePtr driver, + virDomainObjPtr vm, + virDomainHostdevDefPtr hostdev) +{ +#if defined(LIBXL_HAVE_VSCSI) + libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver); + virDomainHostdevDefPtr detach; + int idx; + virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr; + virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi; + int ret = -1; + char *str = NULL; + + if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) + return -1; + + idx = virDomainHostdevFind(vm->def, hostdev, &detach); + if (idx < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("target scsi device %u:%u:%u:%u not found"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto cleanup; + } + + if (virAsprintf(&str, "%u:%u:%u:%u", + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit) < 0) { + goto error; + }; +
Maybe a comment here that xlu_vscsi_detach calls libxl_device_vscsi_remove. The other libxlDomain{Attach,Detach}*Device functions call libxl_device_*_{add,remove}, so I think a comment about diverging from that pattern would be helpful.
+ if (xlu_vscsi_detach(cfg->xlu, cfg->ctx, vm->def->id, str) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, + _("libxenlight failed to detach pci device %u:%u:%u:%u"), + hostdev->info->addr.drive.controller, + hostdev->info->addr.drive.bus, + hostdev->info->addr.drive.target, + hostdev->info->addr.drive.unit); + goto error; + } + + + virDomainHostdevRemove(vm->def, idx); + + virHostdevReAttachPCIDevices(hostdev_mgr, LIBXL_DRIVER_NAME, + vm->def->name, &hostdev, 1, NULL); + + ret = 0; + + error: + VIR_FREE(str); + virDomainHostdevDefFree(detach); + + cleanup: + virObjectUnref(cfg); + return ret; +#else + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("This version of libxenlight does not support vscsi")); + return -1;
Parameters are unused when LIBXL_HAVE_VSCSI is not defined. Regards, Jim
+#endif +} + +static int libxlDomainDetachHostDevice(libxlDriverPrivatePtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev) @@ -3301,6 +3465,9 @@ libxlDomainDetachHostDevice(libxlDriverPrivatePtr driver, case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: return libxlDomainDetachHostPCIDevice(driver, vm, hostdev);
+ case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI: + return libxlDomainDetachHostSCSIDevice(driver, vm, hostdev); + default: virReportError(VIR_ERR_INTERNAL_ERROR, _("unexpected hostdev type %d"), subsys->type);
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