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qemu_hotplug: Prepare NVMe disks on hotplug

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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This commit is contained in:
Michal Privoznik 2019-07-09 17:39:33 +02:00
parent 6edb4321b2
commit 430715604f
3 changed files with 86 additions and 0 deletions
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58
src/qemu/qemu_domain.c
View File

@ -11531,6 +11531,54 @@ typedef enum {
} qemuDomainStorageSourceAccessFlags;
static int
qemuDomainStorageSourceAccessModifyNVMe(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virStorageSourcePtr src,
bool revoke)
{
bool revoke_maxmemlock = false;
bool revoke_hostdev = false;
int ret = -1;
if (!virStorageSourceChainHasNVMe(src))
return 0;
VIR_DEBUG("Modifying access for a NVMe disk src=%p revoke=%d",
src, revoke);
if (revoke) {
revoke_maxmemlock = true;
revoke_hostdev = true;
ret = 0;
goto revoke;
}
if (qemuDomainAdjustMaxMemLock(vm, true) < 0)
goto revoke;
revoke_maxmemlock = true;
if (qemuHostdevPrepareOneNVMeDisk(driver, vm->def->name, src) < 0)
goto revoke;
revoke_hostdev = true;
return 0;
revoke:
if (revoke_maxmemlock) {
if (qemuDomainAdjustMaxMemLock(vm, false) < 0)
VIR_WARN("Unable to change max memlock limit");
}
if (revoke_hostdev)
qemuHostdevReAttachOneNVMeDisk(driver, vm->def->name, src);
return ret;
}
/**
* qemuDomainStorageSourceAccessModify:
* @driver: qemu driver struct
@ -11562,6 +11610,7 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
bool revoke_cgroup = false;
bool revoke_label = false;
bool revoke_namespace = false;
bool revoke_nvme = false;
bool revoke_lockspace = false;
VIR_DEBUG("src='%s' readonly=%d force_ro=%d force_rw=%d revoke=%d chain=%d",
@ -11579,6 +11628,7 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
revoke_cgroup = true;
revoke_label = true;
revoke_namespace = true;
revoke_nvme = true;
revoke_lockspace = true;
ret = 0;
goto revoke;
@ -11589,6 +11639,11 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
revoke_lockspace = true;
if (qemuDomainStorageSourceAccessModifyNVMe(driver, vm, src, false) < 0)
goto revoke;
revoke_nvme = true;
/* When modifying access of existing @src namespace does not need update */
if (!(flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_MODIFY_ACCESS)) {
if (qemuDomainNamespaceSetupDisk(vm, src) < 0)
@ -11639,6 +11694,9 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
VIR_WARN("Unable to remove /dev entry for %s", srcstr);
}
if (revoke_nvme)
qemuDomainStorageSourceAccessModifyNVMe(driver, vm, src, true);
if (revoke_lockspace) {
if (virDomainLockImageDetach(driver->lockManager, vm, src) < 0)
VIR_WARN("Unable to release lock on %s", srcstr);

22
src/qemu/qemu_hostdev.c
View File

@ -212,6 +212,17 @@ qemuHostdevPreparePCIDevicesCheckSupport(virDomainHostdevDefPtr *hostdevs,
return true;
}
int
qemuHostdevPrepareOneNVMeDisk(virQEMUDriverPtr driver,
const char *name,
virStorageSourcePtr src)
{
return virHostdevPrepareOneNVMeDevice(driver->hostdevMgr,
QEMU_DRIVER_NAME,
name,
src);
}
int
qemuHostdevPrepareNVMeDisks(virQEMUDriverPtr driver,
const char *name,
@ -369,6 +380,17 @@ qemuHostdevPrepareDomainDevices(virQEMUDriverPtr driver,
return 0;
}
void
qemuHostdevReAttachOneNVMeDisk(virQEMUDriverPtr driver,
const char *name,
virStorageSourcePtr src)
{
virHostdevReAttachOneNVMeDevice(driver->hostdevMgr,
QEMU_DRIVER_NAME,
name,
src);
}
void
qemuHostdevReAttachNVMeDisks(virQEMUDriverPtr driver,
const char *name,

6
src/qemu/qemu_hostdev.h
View File

@ -41,6 +41,9 @@ int qemuHostdevUpdateActiveSCSIDevices(virQEMUDriverPtr driver,
int qemuHostdevUpdateActiveDomainDevices(virQEMUDriverPtr driver,
virDomainDefPtr def);
int qemuHostdevPrepareOneNVMeDisk(virQEMUDriverPtr driver,
const char *name,
virStorageSourcePtr src);
int qemuHostdevPrepareNVMeDisks(virQEMUDriverPtr driver,
const char *name,
virDomainDiskDefPtr *disks,
@ -74,6 +77,9 @@ int qemuHostdevPrepareDomainDevices(virQEMUDriverPtr driver,
virQEMUCapsPtr qemuCaps,
unsigned int flags);
void qemuHostdevReAttachOneNVMeDisk(virQEMUDriverPtr driver,
const char *name,
virStorageSourcePtr src);
void qemuHostdevReAttachNVMeDisks(virQEMUDriverPtr driver,
const char *name,
virDomainDiskDefPtr *disks,