Daniel P. Berrange wrote:
> On Thu, Jan 14, 2010 at 10:42:46AM -0700, Jim Fehlig wrote:
>
>> Change all virsh commands that invoke virDomain{Attach,Detach}Device()
>> to use virDomain{Attach,Detach}DeviceFlags() instead.
>>
>> Add a "--persistent" flag to these virsh commands, allowing user to
>> specify that the domain persisted config be modified as well.
>>
>
>
>
>
>> ---
>> tools/virsh.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++------
>> 1 files changed, 49 insertions(+), 6 deletions(-)
>>
>> diff --git a/tools/virsh.c b/tools/virsh.c
>> index 1fae5e6..a082b89 100644
>> --- a/tools/virsh.c
>> +++ b/tools/virsh.c
>> @@ -6285,6 +6285,7 @@ static const vshCmdInfo info_attach_device[] = {
>> static const vshCmdOptDef opts_attach_device[] = {
>> {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
>> {"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("XML file")},
>> + {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist device attachment")},
>> {NULL, 0, 0, NULL}
>> };
>>
>> @@ -6296,6 +6297,7 @@ cmdAttachDevice(vshControl *ctl, const vshCmd *cmd)
>> char *buffer;
>> int ret = TRUE;
>> int found;
>> + int flags = VIR_DOMAIN_DEVICE_MODIFY_CURRENT;
>>
>> if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
>> return FALSE;
>> @@ -6309,13 +6311,18 @@ cmdAttachDevice(vshControl *ctl, const vshCmd *cmd)
>> virDomainFree(dom);
>> return FALSE;
>> }
>> + if (vshCommandOptBool(cmd, "persistent"))
>> + flags |= VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
>>
>> if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) {
>> virDomainFree(dom);
>> return FALSE;
>> }
>>
>> - ret = virDomainAttachDevice(dom, buffer);
>> + if (virDomainIsActive(dom))
>> + flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
>> +
>> + ret = virDomainAttachDeviceFlags(dom, buffer, flags);
>> VIR_FREE(buffer);
>>
>> if (ret < 0) {
>>
>
>
> This has the same subtle compatability problem that the public API
> entry point suffers from. New virsh won't be able to modify guests
> from an existing libvirtd. I think that if flags == 0, then we should
> use the existing API method, and only use the new virDomainAttachDeviceFlags
> if flags != 0. I think we probably want to default to 0, and only set
> the VIR_DOMAIN_DEVICE_MODIFY_LIVE flag if a '--live' flag is given.
> Basically we need to try & ensure compatability with existing operation
> if at all possible
>
The existing behavior is essentially VIR_DOMAIN_DEVICE_MODIFY_LIVE.
qemu fails the operation if domain is inactive. Attach works on
inactive Xen domains, but detach does not. vbox has an impl for
inactive domains, but I haven't tested it.
I kept the existing behavior by only calling
vir{Attach,Detach}DeviceFlags() only when the new virsh flag
"persistent" is specified. Revised patch below.
Thanks,
Jim
commit 4e52e0d49d96958facab3e99b6b6f8519d2d9c76
Author: Jim Fehlig <jfehlig@xxxxxxxxxx>
Date: Wed Jan 13 18:54:58 2010 -0700
Modify virsh commands
Change all virsh commands that invoke virDomain{Attach,Detach}Device()
to use virDomain{Attach,Detach}DeviceFlags() instead.
Add a "--persistent" flag to these virsh commands, allowing user to
specify that the domain persisted config be modified as well.
V2: Only invoke virDomain{Attach,Detach}DeviceFlags() if
"--persistent" flag is specified. Otherwise invoke
virDomain{Attach,Detach}Device() to retain current behavior.
diff --git a/tools/virsh.c b/tools/virsh.c
index 1fae5e6..0763dcc 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -6285,6 +6285,7 @@ static const vshCmdInfo info_attach_device[] = {
static const vshCmdOptDef opts_attach_device[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("XML file")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist device attachment")},
{NULL, 0, 0, NULL}
};
@@ -6296,6 +6297,7 @@ cmdAttachDevice(vshControl *ctl, const vshCmd *cmd)
char *buffer;
int ret = TRUE;
int found;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
@@ -6315,7 +6317,14 @@ cmdAttachDevice(vshControl *ctl, const vshCmd *cmd)
return FALSE;
}
- ret = virDomainAttachDevice(dom, buffer);
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainAttachDeviceFlags(dom, buffer, flags);
+ } else {
+ ret = virDomainAttachDevice(dom, buffer);
+ }
VIR_FREE(buffer);
if (ret < 0) {
@@ -6343,6 +6352,7 @@ static const vshCmdInfo info_detach_device[] = {
static const vshCmdOptDef opts_detach_device[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("XML file")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist device detachment")},
{NULL, 0, 0, NULL}
};
@@ -6354,6 +6364,7 @@ cmdDetachDevice(vshControl *ctl, const vshCmd *cmd)
char *buffer;
int ret = TRUE;
int found;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
@@ -6373,7 +6384,14 @@ cmdDetachDevice(vshControl *ctl, const vshCmd *cmd)
return FALSE;
}
- ret = virDomainDetachDevice(dom, buffer);
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainDetachDeviceFlags(dom, buffer, flags);
+ } else {
+ ret = virDomainDetachDevice(dom, buffer);
+ }
VIR_FREE(buffer);
if (ret < 0) {
@@ -6405,6 +6423,7 @@ static const vshCmdOptDef opts_attach_interface[] = {
{"target", VSH_OT_DATA, 0, gettext_noop("target network name")},
{"mac", VSH_OT_DATA, 0, gettext_noop("MAC address")},
{"script", VSH_OT_DATA, 0, gettext_noop("script used to bridge network interface")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist interface attachment")},
{NULL, 0, 0, NULL}
};
@@ -6415,6 +6434,7 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
char *mac, *target, *script, *type, *source;
int typ, ret = FALSE;
char *buf = NULL, *tmp = NULL;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
@@ -6489,13 +6509,22 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
if (!buf) goto cleanup;
strcat(buf, " </interface>\n");
- if (virDomainAttachDevice(dom, buf)) {
- goto cleanup;
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainAttachDeviceFlags(dom, buf, flags);
} else {
- vshPrint(ctl, "%s", _("Interface attached successfully\n"));
+ ret = virDomainAttachDevice(dom, buf);
}
- ret = TRUE;
+ if (ret != 0) {
+ vshError(ctl, _("Failed to attach interface"));
+ ret = FALSE;
+ } else {
+ vshPrint(ctl, "%s", _("Interface attached successfully\n"));
+ ret = TRUE;
+ }
cleanup:
if (dom)
@@ -6518,6 +6547,7 @@ static const vshCmdOptDef opts_detach_interface[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"type", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("network interface type")},
{"mac", VSH_OT_STRING, 0, gettext_noop("MAC address")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist interface detachment")},
{NULL, 0, 0, NULL}
};
@@ -6534,6 +6564,7 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd)
char *doc, *mac =NULL, *type;
char buf[64];
int i = 0, diff_mac, ret = FALSE;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
@@ -6605,10 +6636,21 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd)
goto cleanup;
}
- ret = virDomainDetachDevice(dom, (char *)xmlBufferContent(xml_buf));
- if (ret != 0)
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainDetachDeviceFlags(dom,
+ (char *)xmlBufferContent(xml_buf),
+ flags);
+ } else {
+ ret = virDomainDetachDevice(dom, (char *)xmlBufferContent(xml_buf));
+ }
+
+ if (ret != 0) {
+ vshError(ctl, _("Failed to detach interface"));
ret = FALSE;
- else {
+ } else {
vshPrint(ctl, "%s", _("Interface detached successfully\n"));
ret = TRUE;
}
@@ -6642,6 +6684,7 @@ static const vshCmdOptDef opts_attach_disk[] = {
{"subdriver", VSH_OT_STRING, 0, gettext_noop("subdriver of disk device")},
{"type", VSH_OT_STRING, 0, gettext_noop("target device type")},
{"mode", VSH_OT_STRING, 0, gettext_noop("mode of device reading and writing")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist disk attachment")},
{NULL, 0, 0, NULL}
};
@@ -6652,6 +6695,7 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd)
char *source, *target, *driver, *subdriver, *type, *mode;
int isFile = 0, ret = FALSE;
char *buf = NULL, *tmp = NULL;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
@@ -6767,12 +6811,22 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd)
if (!buf) goto cleanup;
strcat(buf, " </disk>\n");
- if (virDomainAttachDevice(dom, buf))
- goto cleanup;
- else
- vshPrint(ctl, "%s", _("Disk attached successfully\n"));
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainAttachDeviceFlags(dom, buf, flags);
+ } else {
+ ret = virDomainAttachDevice(dom, buf);
+ }
- ret = TRUE;
+ if (ret != 0) {
+ vshError(ctl, _("Failed to attach disk"));
+ ret = FALSE;
+ } else {
+ vshPrint(ctl, "%s", _("Disk attached successfully\n"));
+ ret = TRUE;
+ }
cleanup:
if (dom)
@@ -6794,6 +6848,7 @@ static const vshCmdInfo info_detach_disk[] = {
static const vshCmdOptDef opts_detach_disk[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"target", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("target of disk device")},
+ {"persistent", VSH_OT_BOOL, 0, gettext_noop("persist disk detachment")},
{NULL, 0, 0, NULL}
};
@@ -6809,6 +6864,7 @@ cmdDetachDisk(vshControl *ctl, const vshCmd *cmd)
virDomainPtr dom = NULL;
char *doc, *target;
int i = 0, diff_tgt, ret = FALSE;
+ unsigned int flags;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
@@ -6874,10 +6930,21 @@ cmdDetachDisk(vshControl *ctl, const vshCmd *cmd)
goto cleanup;
}
- ret = virDomainDetachDevice(dom, (char *)xmlBufferContent(xml_buf));
- if (ret != 0)
+ if (vshCommandOptBool(cmd, "persistent")) {
+ flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
+ if (virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE;
+ ret = virDomainDetachDeviceFlags(dom,
+ (char *)xmlBufferContent(xml_buf),
+ flags);
+ } else {
+ ret = virDomainDetachDevice(dom, (char *)xmlBufferContent(xml_buf));
+ }
+
+ if (ret != 0) {
+ vshError(ctl, _("Failed to detach disk"));
ret = FALSE;
- else {
+ } else {
vshPrint(ctl, "%s", _("Disk detached successfully\n"));
ret = TRUE;
}
--
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