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Factor out common libvirt code so that it can be reused by multiple backends

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This commit is contained in:
Ryan McCabe 2017-05-24 23:18:18 -04:00
parent 4d29ef93ea
commit 60800fe973
4 changed files with 427 additions and 399 deletions
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2
server/checkpoint.c
View File

@ -80,7 +80,7 @@ virt_list_update(virConnectPtr vp, virt_list_t **vl, int my_id)
virt_list_t *list = NULL; virt_list_t *list = NULL;
if (*vl) if (*vl)
vl_free(*vl); vl_free(*vl);
list = vl_get(vp, my_id); list = vl_get(vp, 1, my_id);
*vl = list; *vl = list;
if (!list) if (!list)

337
server/libvirt.c
View File

@ -1,5 +1,5 @@
/* /*
Copyright Red Hat, Inc. 2006-2014 Copyright Red Hat, Inc. 2006-2017
This program is free software; you can redistribute it and/or modify it This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the under the terms of the GNU General Public License as published by the
@ -80,67 +80,6 @@ do {\
} while(0) } while(0)
static inline int
wait_domain(const char *vm_name, virConnectPtr vp, int timeout)
{
int tries = 0;
int response = 1;
int ret;
virDomainPtr vdp;
virDomainInfo vdi;
int uuid_check;
uuid_check = is_uuid(vm_name);
if (uuid_check) {
vdp = virDomainLookupByUUIDString(vp, (const char *)vm_name);
} else {
vdp = virDomainLookupByName(vp, vm_name);
}
if (!vdp)
return 0;
/* Check domain liveliness. If the domain is still here,
we return failure, and the client must then retry */
/* XXX On the xen 3.0.4 API, we will be able to guarantee
synchronous virDomainDestroy, so this check will not
be necessary */
do {
if (++tries > timeout)
break;
sleep(1);
if (uuid_check) {
vdp = virDomainLookupByUUIDString(vp, (const char *)vm_name);
} else {
vdp = virDomainLookupByName(vp, vm_name);
}
if (!vdp) {
dbg_printf(2, "Domain no longer exists\n");
response = 0;
break;
}
memset(&vdi, 0, sizeof(vdi));
ret = virDomainGetInfo(vdp, &vdi);
virDomainFree(vdp);
if (ret < 0)
continue;
if (vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "Domain has been shut off\n");
response = 0;
break;
}
dbg_printf(4, "Domain still exists (state %d) after %d seconds\n",
vdi.state, tries);
} while (1);
return response;
}
static int static int
libvirt_null(const char *vm_name, void *priv) libvirt_null(const char *vm_name, void *priv)
{ {
@ -154,61 +93,11 @@ static int
libvirt_off(const char *vm_name, const char *src, uint32_t seqno, void *priv) libvirt_off(const char *vm_name, const char *src, uint32_t seqno, void *priv)
{ {
struct libvirt_info *info = (struct libvirt_info *)priv; struct libvirt_info *info = (struct libvirt_info *)priv;
virDomainPtr vdp = NULL;
virDomainInfo vdi;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret = -1;
int i;
dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno); dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno);
VALIDATE(info); VALIDATE(info);
if (is_uuid(vm_name)) return vm_off(info->vp, info->vp_count, vm_name);
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < info->vp_count ; i++) {
vdp = virt_lookup_fn(info->vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[libvirt:OFF] Domain %s does not exist\n", vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "[libvirt:OFF] Nothing to do - "
"domain %s is already off\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Destroying domain %s\n", vm_name);
dbg_printf(2, "[libvirt:OFF] Calling virDomainDestroy for %s\n", vm_name);
ret = virDomainDestroy(vdp);
virDomainFree(vdp);
if (ret < 0) {
syslog(LOG_NOTICE, "Failed to destroy domain %s: %d\n", vm_name, ret);
dbg_printf(2, "[libvirt:OFF] Failed to destroy domain: %s %d\n",
vm_name, ret);
return 1;
}
if (ret) {
syslog(LOG_NOTICE, "Domain %s still exists; fencing failed\n", vm_name);
dbg_printf(2, "[libvirt:OFF] Domain %s still exists; fencing failed\n",
vm_name);
return 1;
}
dbg_printf(2, "[libvirt:OFF] Success for %s\n", vm_name);
return 0;
} }
@ -216,60 +105,11 @@ static int
libvirt_on(const char *vm_name, const char *src, uint32_t seqno, void *priv) libvirt_on(const char *vm_name, const char *src, uint32_t seqno, void *priv)
{ {
struct libvirt_info *info = (struct libvirt_info *)priv; struct libvirt_info *info = (struct libvirt_info *)priv;
virDomainPtr vdp = NULL;
virDomainInfo vdi;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret = -1;
int i;
dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno); dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno);
VALIDATE(info); VALIDATE(info);
if (is_uuid(vm_name)) return vm_on(info->vp, info->vp_count, vm_name);
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < info->vp_count ; i++) {
vdp = virt_lookup_fn(info->vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[libvirt:ON] Domain %s does not exist\n", vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state != VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "Nothing to do - domain %s is already running\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Starting domain %s\n", vm_name);
dbg_printf(2, "[libvirt:ON] Calling virDomainCreate for %s\n", vm_name);
ret = virDomainCreate(vdp);
virDomainFree(vdp);
if (ret < 0) {
syslog(LOG_NOTICE, "Failed to start domain %s: %d\n", vm_name, ret);
dbg_printf(2, "[libvirt:ON] virDomainCreate() failed for %s: %d\n",
vm_name, ret);
return 1;
}
if (ret) {
syslog(LOG_NOTICE, "Domain %s did not start\n", vm_name);
dbg_printf(2, "[libvirt:ON] Domain %s did not start\n", vm_name);
return 1;
}
syslog(LOG_NOTICE, "Domain %s started\n", vm_name);
dbg_printf(2, "[libvirt:ON] Success for %s\n", vm_name);
return 0;
} }
@ -288,39 +128,11 @@ static int
libvirt_status(const char *vm_name, void *priv) libvirt_status(const char *vm_name, void *priv)
{ {
struct libvirt_info *info = (struct libvirt_info *)priv; struct libvirt_info *info = (struct libvirt_info *)priv;
virDomainPtr vdp = NULL;
virDomainInfo vdi;
int ret = 0;
int i;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
dbg_printf(5, "ENTER %s %s\n", __FUNCTION__, vm_name); dbg_printf(5, "ENTER %s %s\n", __FUNCTION__, vm_name);
VALIDATE(info); VALIDATE(info);
if (is_uuid(vm_name)) return vm_status(info->vp, info->vp_count, vm_name);
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < info->vp_count ; i++) {
vdp = virt_lookup_fn(info->vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[libvirt:STATUS] Unknown VM %s - return OFF\n", vm_name);
return RESP_OFF;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "[libvirt:STATUS] VM %s is OFF\n", vm_name);
ret = RESP_OFF;
}
if (vdp)
virDomainFree(vdp);
return ret;
} }
@ -328,117 +140,11 @@ static int
libvirt_reboot(const char *vm_name, const char *src, uint32_t seqno, void *priv) libvirt_reboot(const char *vm_name, const char *src, uint32_t seqno, void *priv)
{ {
struct libvirt_info *info = (struct libvirt_info *)priv; struct libvirt_info *info = (struct libvirt_info *)priv;
virDomainPtr vdp = NULL, nvdp;
virDomainInfo vdi;
char *domain_desc;
virConnectPtr vcp = NULL;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret;
int i;
dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno); dbg_printf(5, "ENTER %s %s %u\n", __FUNCTION__, vm_name, seqno);
VALIDATE(info); VALIDATE(info);
if (is_uuid(vm_name)) return vm_reboot(info->vp, info->vp_count, vm_name);
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < info->vp_count ; i++) {
vdp = virt_lookup_fn(info->vp[i], vm_name);
if (vdp) {
vcp = info->vp[i];
break;
}
}
if (!vdp || !vcp) {
dbg_printf(2,
"[libvirt:REBOOT] Nothing to do - domain %s does not exist\n",
vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "[libvirt:REBOOT] Nothing to do - domain %s is off\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Rebooting domain %s\n", vm_name);
dbg_printf(5, "[libvirt:REBOOT] Rebooting domain %s...\n", vm_name);
domain_desc = virDomainGetXMLDesc(vdp, 0);
if (!domain_desc) {
dbg_printf(5, "[libvirt:REBOOT] Failed getting domain description "
"from libvirt for %s...\n", vm_name);
}
dbg_printf(2, "[libvirt:REBOOT] Calling virDomainDestroy(%p) for %s\n",
vdp, vm_name);
ret = virDomainDestroy(vdp);
if (ret < 0) {
dbg_printf(2,
"[libvirt:REBOOT] virDomainDestroy() failed for %s: %d/%d\n",
vm_name, ret, errno);
if (domain_desc)
free(domain_desc);
virDomainFree(vdp);
return 1;
}
ret = wait_domain(vm_name, vcp, 15);
if (ret) {
syslog(LOG_NOTICE, "Domain %s still exists; fencing failed\n", vm_name);
dbg_printf(2,
"[libvirt:REBOOT] Domain %s still exists; fencing failed\n",
vm_name);
if (domain_desc)
free(domain_desc);
virDomainFree(vdp);
return 1;
}
if (!domain_desc)
return 0;
/* 'on' is not a failure */
ret = 0;
dbg_printf(3, "[[ XML Domain Info ]]\n");
dbg_printf(3, "%s\n[[ XML END ]]\n", domain_desc);
dbg_printf(2, "[libvirt:REBOOT] Calling virDomainCreateLinux() for %s\n",
vm_name);
nvdp = virDomainCreateLinux(vcp, domain_desc, 0);
if (nvdp == NULL) {
/* More recent versions of libvirt or perhaps the
* KVM back-end do not let you create a domain from
* XML if there is already a defined domain description
* with the same name that it knows about. You must
* then call virDomainCreate() */
dbg_printf(2,
"[libvirt:REBOOT] virDomainCreateLinux() failed for %s; "
"Trying virDomainCreate()\n",
vm_name);
if (virDomainCreate(vdp) < 0) {
syslog(LOG_NOTICE, "Could not restart %s\n", vm_name);
dbg_printf(1, "[libvirt:REBOOT] Failed to recreate guest %s!\n",
vm_name);
}
}
free(domain_desc);
virDomainFree(vdp);
return ret;
} }
@ -446,33 +152,28 @@ static int
libvirt_hostlist(hostlist_callback callback, void *arg, void *priv) libvirt_hostlist(hostlist_callback callback, void *arg, void *priv)
{ {
struct libvirt_info *info = (struct libvirt_info *)priv; struct libvirt_info *info = (struct libvirt_info *)priv;
int i; virt_list_t *vl;
int x;
dbg_printf(5, "ENTER %s\n", __FUNCTION__); dbg_printf(5, "ENTER %s\n", __FUNCTION__);
VALIDATE(info); VALIDATE(info);
for (i = 0 ; i < info->vp_count ; i++) { vl = vl_get(info->vp, info->vp_count, 1);
int x; if (!vl)
virt_list_t *vl; return 0;
vl = vl_get(info->vp[i], 1); for (x = 0; x < vl->vm_count; x++) {
if (!vl) callback(vl->vm_states[x].v_name,
continue; vl->vm_states[x].v_uuid,
vl->vm_states[x].v_state.s_state, arg);
for (x = 0; x < vl->vm_count; x++) { dbg_printf(10, "[libvirt:HOSTLIST] Sent %s %s %d\n",
callback(vl->vm_states[x].v_name, vl->vm_states[x].v_name,
vl->vm_states[x].v_uuid, vl->vm_states[x].v_uuid,
vl->vm_states[x].v_state.s_state, arg); vl->vm_states[x].v_state.s_state);
dbg_printf(10, "[libvirt:HOSTLIST] Sent %s %s %d\n",
vl->vm_states[x].v_name,
vl->vm_states[x].v_uuid,
vl->vm_states[x].v_state.s_state);
}
vl_free(vl);
} }
vl_free(vl);
return 0; return 0;
} }

468
server/virt.c
View File

@ -1,5 +1,5 @@
/* /*
Copyright Red Hat, Inc. 2006 Copyright Red Hat, Inc. 2006-2017
This program is free software; you can redistribute it and/or modify it This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the under the terms of the GNU General Public License as published by the
@ -16,7 +16,9 @@
Free Software Foundation, Inc., 675 Mass Ave, Cambridge, Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
MA 02139, USA. MA 02139, USA.
*/ */
#include <stdio.h> #include <stdio.h>
#include <unistd.h>
#include <sys/types.h> #include <sys/types.h>
#include <stdlib.h> #include <stdlib.h>
#include <libvirt/libvirt.h> #include <libvirt/libvirt.h>
@ -24,8 +26,11 @@
#include <malloc.h> #include <malloc.h>
#include <stdint.h> #include <stdint.h>
#include <errno.h> #include <errno.h>
#include "virt.h" #include <syslog.h>
#include "debug.h"
#include "uuid-test.h"
#include "virt.h"
static int static int
_compare_virt(const void *_left, const void *_right) _compare_virt(const void *_left, const void *_right)
@ -37,96 +42,85 @@ _compare_virt(const void *_left, const void *_right)
} }
virt_list_t *vl_get(virConnectPtr vp, int my_id) static void
_free_dom_list(virDomainPtr *dom_list, int len) {
int x;
if (!dom_list || len <= 0)
return;
for (x = 0 ; x < len; x++)
virDomainFree(dom_list[x]);
free(dom_list);
}
virt_list_t *vl_get(virConnectPtr *vp, int vp_count, int my_id)
{ {
virt_list_t *vl = NULL; virt_list_t *vl = NULL;
int d_count, x, saved_errno; int d_count = 0;
virDomainPtr *dom_list; int i;
errno = EINVAL; errno = EINVAL;
if (!vp) if (!vp || vp_count < 1)
return NULL; return NULL;
d_count = virConnectListAllDomains(vp, &dom_list, 0); for (i = 0 ; i < vp_count ; i++) {
if (d_count <= 0) int x;
goto out_fail; virDomainPtr *dom_list;
vl = malloc(sizeof(uint32_t) + sizeof(virt_state_t) * d_count); int ret = virConnectListAllDomains(vp[i], &dom_list, 0);
if (!vl) if (ret <= 0)
goto out_fail; continue;
vl->vm_count = d_count; d_count += ret;
vl = realloc(vl, sizeof(uint32_t) + sizeof(virt_state_t) * d_count);
if (!vl) {
_free_dom_list(dom_list, ret);
return NULL;
}
vl->vm_count = d_count;
/* Ok, we have the domain IDs - let's get their names and states */ /* Ok, we have the domain IDs - let's get their names and states */
for (x = 0; x < d_count; x++) { for (x = 0; x < ret; x++) {
char *d_name; char *d_name;
virDomainInfo d_info; virDomainInfo d_info;
char d_uuid[MAX_DOMAINNAME_LENGTH]; char d_uuid[MAX_DOMAINNAME_LENGTH];
virDomainPtr dom = dom_list[x]; virDomainPtr dom = dom_list[x];
if (!(d_name = (char *)virDomainGetName(dom))) if (!(d_name = (char *)virDomainGetName(dom))) {
goto out_fail; _free_dom_list(dom_list, ret);
free(vl);
return NULL;
}
if (virDomainGetUUIDString(dom, d_uuid) != 0) if (virDomainGetUUIDString(dom, d_uuid) != 0) {
goto out_fail; _free_dom_list(dom_list, ret);
free(vl);
return NULL;
}
if (virDomainGetInfo(dom, &d_info) < 0) if (virDomainGetInfo(dom, &d_info) < 0) {
goto out_fail; _free_dom_list(dom_list, ret);
free(vl);
return NULL;
}
/* Store the name & state */ /* Store the name & state */
strncpy(vl->vm_states[x].v_name, d_name, MAX_DOMAINNAME_LENGTH); strncpy(vl->vm_states[x].v_name, d_name, MAX_DOMAINNAME_LENGTH);
strncpy(vl->vm_states[x].v_uuid, d_uuid, MAX_DOMAINNAME_LENGTH); strncpy(vl->vm_states[x].v_uuid, d_uuid, MAX_DOMAINNAME_LENGTH);
vl->vm_states[x].v_state.s_state = d_info.state; vl->vm_states[x].v_state.s_state = d_info.state;
vl->vm_states[x].v_state.s_owner = my_id; vl->vm_states[x].v_state.s_owner = my_id;
}
_free_dom_list(dom_list, ret);
} }
for (x = 0 ; x < d_count; x++)
virDomainFree(dom_list[x]);
free(dom_list);
/* We have all the locally running domains & states now */ /* We have all the locally running domains & states now */
/* Sort */ /* Sort */
qsort(&vl->vm_states[0], vl->vm_count, sizeof(vl->vm_states[0]), qsort(&vl->vm_states[0], vl->vm_count, sizeof(vl->vm_states[0]),
_compare_virt); _compare_virt);
return vl; return vl;
out_fail:
saved_errno = errno;
for (x = 0 ; x < d_count; x++)
virDomainFree(dom_list[x]);
free(dom_list);
if (vl)
free(vl);
errno = saved_errno;
return NULL;
}
/* Returns 0 if equal, nonzero if not */
int
vl_cmp(virt_list_t *left, virt_list_t *right)
{
int x;
/* Quick checks */
if (!left->vm_count && !right->vm_count)
return 1;
if (left->vm_count != right->vm_count)
return 0;
for (x = 0; x < left->vm_count; x++) {
if (strcmp(left->vm_states[x].v_name,
right->vm_states[x].v_name))
return 1;
/*
if (left->vm_states[x].v_state.s_state !=
right->vm_states[x].v_state.s_state)
return 1;
*/
}
return 0;
} }
@ -192,3 +186,333 @@ vl_free(virt_list_t *old)
{ {
free(old); free(old);
} }
static inline int
wait_domain(const char *vm_name, virConnectPtr vp, int timeout)
{
int tries = 0;
int response = 1;
int ret;
virDomainPtr vdp;
virDomainInfo vdi;
int uuid_check;
uuid_check = is_uuid(vm_name);
if (uuid_check) {
vdp = virDomainLookupByUUIDString(vp, (const char *)vm_name);
} else {
vdp = virDomainLookupByName(vp, vm_name);
}
if (!vdp)
return 0;
/* Check domain liveliness. If the domain is still here,
we return failure, and the client must then retry */
/* XXX On the xen 3.0.4 API, we will be able to guarantee
synchronous virDomainDestroy, so this check will not
be necessary */
do {
if (++tries > timeout)
break;
sleep(1);
if (uuid_check) {
vdp = virDomainLookupByUUIDString(vp, (const char *)vm_name);
} else {
vdp = virDomainLookupByName(vp, vm_name);
}
if (!vdp) {
dbg_printf(2, "Domain no longer exists\n");
response = 0;
break;
}
memset(&vdi, 0, sizeof(vdi));
ret = virDomainGetInfo(vdp, &vdi);
virDomainFree(vdp);
if (ret < 0)
continue;
if (vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "Domain has been shut off\n");
response = 0;
break;
}
dbg_printf(4, "Domain still exists (state %d) after %d seconds\n",
vdi.state, tries);
} while (1);
return response;
}
int
vm_off(virConnectPtr *vp, int vp_count, const char *vm_name)
{
virDomainPtr vdp = NULL;
virDomainInfo vdi;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret = -1;
int i;
if (is_uuid(vm_name))
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < vp_count ; i++) {
vdp = virt_lookup_fn(vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[virt:OFF] Domain %s does not exist\n", vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF)
{
dbg_printf(2, "[virt:OFF] Nothing to do - "
"domain %s is already off\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Destroying domain %s\n", vm_name);
dbg_printf(2, "[virt:OFF] Calling virDomainDestroy for %s\n", vm_name);
ret = virDomainDestroy(vdp);
virDomainFree(vdp);
if (ret < 0) {
syslog(LOG_NOTICE,
"Failed to destroy domain %s: %d\n", vm_name, ret);
dbg_printf(2, "[virt:OFF] Failed to destroy domain: %s %d\n",
vm_name, ret);
return 1;
}
if (ret) {
syslog(LOG_NOTICE, "Domain %s still exists; fencing failed\n",
vm_name);
dbg_printf(2,
"[virt:OFF] Domain %s still exists; fencing failed\n",
vm_name);
return 1;
}
dbg_printf(2, "[virt:OFF] Success for %s\n", vm_name);
return 0;
}
int
vm_on(virConnectPtr *vp, int vp_count, const char *vm_name)
{
virDomainPtr vdp = NULL;
virDomainInfo vdi;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret = -1;
int i;
if (is_uuid(vm_name))
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < vp_count ; i++) {
vdp = virt_lookup_fn(vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[virt:ON] Domain %s does not exist\n", vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state != VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "Nothing to do - domain %s is already running\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Starting domain %s\n", vm_name);
dbg_printf(2, "[virt:ON] Calling virDomainCreate for %s\n", vm_name);
ret = virDomainCreate(vdp);
virDomainFree(vdp);
if (ret < 0) {
syslog(LOG_NOTICE, "Failed to start domain %s: %d\n", vm_name, ret);
dbg_printf(2, "[virt:ON] virDomainCreate() failed for %s: %d\n",
vm_name, ret);
return 1;
}
if (ret) {
syslog(LOG_NOTICE, "Domain %s did not start\n", vm_name);
dbg_printf(2, "[virt:ON] Domain %s did not start\n", vm_name);
return 1;
}
syslog(LOG_NOTICE, "Domain %s started\n", vm_name);
dbg_printf(2, "[virt:ON] Success for %s\n", vm_name);
return 0;
}
int
vm_status(virConnectPtr *vp, int vp_count, const char *vm_name)
{
virDomainPtr vdp = NULL;
virDomainInfo vdi;
int ret = 0;
int i;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
if (is_uuid(vm_name))
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < vp_count ; i++) {
vdp = virt_lookup_fn(vp[i], vm_name);
if (vdp)
break;
}
if (!vdp) {
dbg_printf(2, "[virt:STATUS] Unknown VM %s - return OFF\n", vm_name);
return RESP_OFF;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "[virt:STATUS] VM %s is OFF\n", vm_name);
ret = RESP_OFF;
}
if (vdp)
virDomainFree(vdp);
return ret;
}
int
vm_reboot(virConnectPtr *vp, int vp_count, const char *vm_name)
{
virDomainPtr vdp = NULL, nvdp;
virDomainInfo vdi;
char *domain_desc;
virConnectPtr vcp = NULL;
virDomainPtr (*virt_lookup_fn)(virConnectPtr, const char *);
int ret;
int i;
if (is_uuid(vm_name))
virt_lookup_fn = virDomainLookupByUUIDString;
else
virt_lookup_fn = virDomainLookupByName;
for (i = 0 ; i < vp_count ; i++) {
vdp = virt_lookup_fn(vp[i], vm_name);
if (vdp) {
vcp = vp[i];
break;
}
}
if (!vdp || !vcp) {
dbg_printf(2,
"[virt:REBOOT] Nothing to do - domain %s does not exist\n",
vm_name);
return 1;
}
if (virDomainGetInfo(vdp, &vdi) == 0 && vdi.state == VIR_DOMAIN_SHUTOFF) {
dbg_printf(2, "[virt:REBOOT] Nothing to do - domain %s is off\n",
vm_name);
virDomainFree(vdp);
return 0;
}
syslog(LOG_NOTICE, "Rebooting domain %s\n", vm_name);
dbg_printf(5, "[virt:REBOOT] Rebooting domain %s...\n", vm_name);
domain_desc = virDomainGetXMLDesc(vdp, 0);
if (!domain_desc) {
dbg_printf(5, "[virt:REBOOT] Failed getting domain description "
"from libvirt for %s...\n", vm_name);
}
dbg_printf(2, "[virt:REBOOT] Calling virDomainDestroy(%p) for %s\n",
vdp, vm_name);
ret = virDomainDestroy(vdp);
if (ret < 0) {
dbg_printf(2,
"[virt:REBOOT] virDomainDestroy() failed for %s: %d/%d\n",
vm_name, ret, errno);
if (domain_desc)
free(domain_desc);
virDomainFree(vdp);
return 1;
}
ret = wait_domain(vm_name, vcp, 15);
if (ret) {
syslog(LOG_NOTICE, "Domain %s still exists; fencing failed\n", vm_name);
dbg_printf(2,
"[virt:REBOOT] Domain %s still exists; fencing failed\n",
vm_name);
if (domain_desc)
free(domain_desc);
virDomainFree(vdp);
return 1;
}
if (!domain_desc)
return 0;
/* 'on' is not a failure */
ret = 0;
dbg_printf(3, "[[ XML Domain Info ]]\n");
dbg_printf(3, "%s\n[[ XML END ]]\n", domain_desc);
dbg_printf(2, "[virt:REBOOT] Calling virDomainCreateLinux() for %s\n",
vm_name);
nvdp = virDomainCreateLinux(vcp, domain_desc, 0);
if (nvdp == NULL) {
/* More recent versions of libvirt or perhaps the
* KVM back-end do not let you create a domain from
* XML if there is already a defined domain description
* with the same name that it knows about. You must
* then call virDomainCreate() */
dbg_printf(2,
"[virt:REBOOT] virDomainCreateLinux() failed for %s; "
"Trying virDomainCreate()\n",
vm_name);
if (virDomainCreate(vdp) < 0) {
syslog(LOG_NOTICE, "Could not restart %s\n", vm_name);
dbg_printf(1, "[virt:REBOOT] Failed to recreate guest %s!\n",
vm_name);
}
}
free(domain_desc);
virDomainFree(vdp);
return ret;
}

19
server/virt.h
View File

@ -1,5 +1,5 @@
/* /*
Copyright Red Hat, Inc. 2006 Copyright Red Hat, Inc. 2006-2017
This program is free software; you can redistribute it and/or modify it This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the under the terms of the GNU General Public License as published by the
@ -16,11 +16,13 @@
Free Software Foundation, Inc., 675 Mass Ave, Cambridge, Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
MA 02139, USA. MA 02139, USA.
*/ */
#ifndef _VIRT_H #ifndef _VIRT_H
#define _VIRT_H #define _VIRT_H
#include <libvirt/libvirt.h>
#include <stdint.h> #include <stdint.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <libvirt/libvirt.h>
#include "xvm.h" #include "xvm.h"
@ -59,15 +61,16 @@ typedef struct _virt_list {
virt_state_t vm_states[0]; virt_state_t vm_states[0];
} virt_list_t; } virt_list_t;
virt_list_t *vl_get(virConnectPtr vp, int my_id); virt_list_t *vl_get(virConnectPtr *vp, int vp_count, int my_id);
int vl_cmp(virt_list_t *left, virt_list_t *right);
void vl_print(virt_list_t *vl); void vl_print(virt_list_t *vl);
void vl_free(virt_list_t *old); void vl_free(virt_list_t *old);
virt_state_t * vl_find_uuid(virt_list_t *vl, const char *name); virt_state_t *vl_find_uuid(virt_list_t *vl, const char *name);
virt_state_t * vl_find_name(virt_list_t *vl, const char *name); virt_state_t *vl_find_name(virt_list_t *vl, const char *name);
int vm_off(virConnectPtr *vp, int vp_count, const char *vm_name);
int vm_on(virConnectPtr *vp, int vp_count, const char *vm_name);
int vm_status(virConnectPtr *vp, int vp_count, const char *vm_name);
int vm_reboot(virConnectPtr *vp, int vp_count, const char *vm_name);
typedef void ckpt_handle; typedef void ckpt_handle;
int ckpt_read(void *hp, const char *secid, void *buf, size_t maxlen); int ckpt_read(void *hp, const char *secid, void *buf, size_t maxlen);