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qemudDomainBlockStats use qemudDiskDeviceName

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* src/qemu_driver.c: use qemudDiskDeviceName to determine the block
  device name in qemudDomainBlockStats(), patch by Guido Günther
daniel
This commit is contained in:
Daniel Veillard 2008-10-17 09:29:29 +00:00
parent f009e2aae2
commit 8348610c5e
2 changed files with 28 additions and 31 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Fri Oct 17 11:25:43 CEST 2008 Daniel Veillard <veillard@redhat.com>
* src/qemu_driver.c: use qemudDiskDeviceName to determine the block
device name in qemudDomainBlockStats(), patch by Guido Günther
Fri Oct 17 11:20:48 CEST 2008 Daniel Veillard <veillard@redhat.com>
* src/qemu_driver.c: fix qemudDiskDeviceName to handle disk devices

54
src/qemu_driver.c
View File

@ -2756,11 +2756,13 @@ qemudDomainBlockStats (virDomainPtr dom,
{
struct qemud_driver *driver =
(struct qemud_driver *)dom->conn->privateData;
char *dummy, *info;
char *dummy, *info = NULL;
const char *p, *eol;
char qemu_dev_name[32];
const char *qemu_dev_name = NULL;
size_t len;
int i, ret = -1;
const virDomainObjPtr vm = virDomainFindByID(&driver->domains, dom->id);
virDomainDiskDefPtr disk = NULL;
if (!vm) {
qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
@ -2773,36 +2775,29 @@ qemudDomainBlockStats (virDomainPtr dom,
return -1;
}
/*
* QEMU internal block device names are different from the device
* names we use in libvirt, so we need to map between them:
*
* hd[a-] to ide0-hd[0-]
* cdrom to ide1-cd0
* fd[a-] to floppy[0-]
*/
if (STRPREFIX (path, "hd") && c_islower(path[2]))
snprintf (qemu_dev_name, sizeof (qemu_dev_name),
"ide0-hd%d", path[2] - 'a');
else if (STREQ (path, "cdrom"))
strcpy (qemu_dev_name, "ide1-cd0");
else if (STRPREFIX (path, "fd") && c_islower(path[2]))
snprintf (qemu_dev_name, sizeof (qemu_dev_name),
"floppy%d", path[2] - 'a');
else {
for (i = 0 ; i < vm->def->ndisks ; i++) {
if (STREQ(path, vm->def->disks[i]->dst)) {
disk = vm->def->disks[i];
break;
}
}
if (!disk) {
qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_ARG,
_("invalid path: %s"), path);
return -1;
}
qemu_dev_name = qemudDiskDeviceName(dom, disk);
if (!qemu_dev_name)
return -1;
len = strlen (qemu_dev_name);
if (qemudMonitorCommand (driver, vm, "info blockstats", &info) < 0) {
qemudReportError (dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED,
"%s", _("'info blockstats' command failed"));
return -1;
goto out;
}
DEBUG ("info blockstats reply: %s", info);
/* If the command isn't supported then qemu prints the supported
@ -2811,11 +2806,10 @@ qemudDomainBlockStats (virDomainPtr dom,
* to detect if qemu supports the command.
*/
if (STRPREFIX (info, "info ")) {
free (info);
qemudReportError (dom->conn, dom, NULL, VIR_ERR_NO_SUPPORT,
"%s",
_("'info blockstats' not supported by this qemu"));
return -1;
goto out;
}
stats->rd_req = -1;
@ -2866,8 +2860,8 @@ qemudDomainBlockStats (virDomainPtr dom,
if (!p || p >= eol) break;
p++;
}
goto done;
ret = 0;
goto out;
}
/* Skip to next line. */
@ -2877,14 +2871,12 @@ qemudDomainBlockStats (virDomainPtr dom,
}
/* If we reach here then the device was not found. */
free (info);
qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_ARG,
_("device not found: %s (%s)"), path, qemu_dev_name);
return -1;
done:
free (info);
return 0;
out:
VIR_FREE(qemu_dev_name);
VIR_FREE(info);
return ret;
}
static int