search for: xenbusstateclosed

Hi, I encountered a problem while porting Solaris as a guest OS on Xen. The problem I found is that when frontend vbd driver get unloaded, it will close the vbd interface by changing the state to XenbusStateClosed. This appears to cause the dom0 hotplug scripts to remove the vbd entry from xenstore for the domU guest, preventing the vbd from being re-attached. So, my questions are: + This doesn''t seem correct since vbd''s are created and destroyed from Dom0 as part of domain creation ...

...known", - [ XenbusStateInitialising ] = "Initialising", - [ XenbusStateInitWait ] = "InitWait", - [ XenbusStateInitialised ] = "Initialised", - [ XenbusStateConnected ] = "Connected", - [ XenbusStateClosing ] = "Closing", - [ XenbusStateClosed ] = "Closed", - [XenbusStateReconfiguring] = "Reconfiguring", - [XenbusStateReconfigured] = "Reconfigured", + [XenbusStateUnknown] = "Unknown", + [XenbusStateInitialising] = "Initialising", + [XenbusStateInitWait] = "InitWait", +...

...known", - [ XenbusStateInitialising ] = "Initialising", - [ XenbusStateInitWait ] = "InitWait", - [ XenbusStateInitialised ] = "Initialised", - [ XenbusStateConnected ] = "Connected", - [ XenbusStateClosing ] = "Closing", - [ XenbusStateClosed ] = "Closed", - [XenbusStateReconfiguring] = "Reconfiguring", - [XenbusStateReconfigured] = "Reconfigured", + [XenbusStateUnknown] = "Unknown", + [XenbusStateInitialising] = "Initialising", + [XenbusStateInitWait] = "InitWait", +...

...known", - [ XenbusStateInitialising ] = "Initialising", - [ XenbusStateInitWait ] = "InitWait", - [ XenbusStateInitialised ] = "Initialised", - [ XenbusStateConnected ] = "Connected", - [ XenbusStateClosing ] = "Closing", - [ XenbusStateClosed ] = "Closed", - [XenbusStateReconfiguring] = "Reconfiguring", - [XenbusStateReconfigured] = "Reconfigured", + [XenbusStateUnknown] = "Unknown", + [XenbusStateInitialising] = "Initialising", + [XenbusStateInitWait] = "InitWait", +...

Please refer following Mr. Steven''s mail posted on June 24th. Message-ID: <20080624131313.GB18379@weybridge.uk.xensource.com> Message-ID: <20080624131256.GA18379@weybridge.uk.xensource.com> Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com> Signed-off-by: Jun Kamada <kama@jp.fujitsu.com> ----- Jun Kamada

upstream commit 7e96287ddc4f42081e18248b6167041c0908004c Author: Vivek Goyal <vgoyal@in.ibm.com> [PATCH] kdump: introduce "reset_devices" command line option Resetting the devices during driver initialization can be a costly operation in terms of time (especially scsi devices). This option can be used by drivers to know that user forcibly wants the devices to

...insertions(+) diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index a53782e..bcaa25b 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -265,6 +265,8 @@ static void frontend_changed(struct xenbus_device *dev, break; case XenbusStateClosed: + if (dev->state == XenbusStateConnected) + disconnect_backend(dev); xenbus_switch_state(dev, XenbusStateClosed); if (xenbus_dev_is_online(dev)) break; -- 1.7.10.4

We just reported to xenbus that we can't close yet, because blkfront is still in use. So we shouldn't then immediately state that we are closing. Signed-off-by: Andrew Jones <drjones at redhat.com> --- drivers/block/xen-blkfront.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index

We just reported to xenbus that we can't close yet, because blkfront is still in use. So we shouldn't then immediately state that we are closing. Signed-off-by: Andrew Jones <drjones at redhat.com> --- drivers/block/xen-blkfront.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index

We just reported to xenbus that we can't close yet, because blkfront is still in use. So we shouldn't then immediately state that we are closing. Signed-off-by: Andrew Jones <drjones at redhat.com> --- drivers/block/xen-blkfront.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index

...00c660d680, ffffff00c679e250, ffffff00c6c63be0, ffffff0002377bc4) ndi_post_event+0x2d(ffffff00c679e250, ffffff00c679e250, ffffff00c6c63be0, ffffff0002377bc4) i_xvdi_oestate_handler+0x74(ffffff00c679e250) taskq_thread+0x1a7(ffffff00c6cda0e8) thread_start+8() xdf_oe_change() is called with an "XenbusStateClosed" event! That is: Using config file "./solaris-install2". Started domain solaris-install2 Loading kmdb... Welcome to kmdb Loaded modules: [ unix krtld genunix ] [0]> ::bp xdf`_init [0]> :c SunOS Release 5.11 Version snv_75 64-bit Copyright 1983...

...itch (backend_state) { case XenbusStateInitialising: - case XenbusStateInitWait: case XenbusStateInitialised: case XenbusStateReconfiguring: case XenbusStateReconfigured: @@ -1307,6 +1349,10 @@ static void blkback_changed(struct xenbus_device *dev, case XenbusStateClosed: break; + case XenbusStateInitWait: + talk_to_blkback(dev, info); + break; + case XenbusStateConnected: blkfront_connect(info); break; diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/c...

...itch (backend_state) { case XenbusStateInitialising: - case XenbusStateInitWait: case XenbusStateInitialised: case XenbusStateReconfiguring: case XenbusStateReconfigured: @@ -1307,6 +1349,10 @@ static void blkback_changed(struct xenbus_device *dev, case XenbusStateClosed: break; + case XenbusStateInitWait: + talk_to_blkback(dev, info); + break; + case XenbusStateConnected: blkfront_connect(info); break; diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/c...

...itch (backend_state) { case XenbusStateInitialising: - case XenbusStateInitWait: case XenbusStateInitialised: case XenbusStateReconfiguring: case XenbusStateReconfigured: @@ -1307,6 +1349,10 @@ static void blkback_changed(struct xenbus_device *dev, case XenbusStateClosed: break; + case XenbusStateInitWait: + talk_to_blkback(dev, info); + break; + case XenbusStateConnected: blkfront_connect(info); break; diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/c...

...ackend to reconfigure...\n"); + while(1) { + state = xenbus_read_integer(path); + if ( state < 0) + state = XenbusStateUnknown; + switch(state) { + case XenbusStateUnknown: + TPMFRONT_ERR("Backend Unknown state, forcing shutdown\n"); + return -1; + case XenbusStateClosed: + TPMFRONT_LOG("Backend Closed\n"); + return 0; + case XenbusStateReconfigured: + TPMFRONT_LOG("Backend Reconfigured\n"); + return 0; + default: + xenbus_wait_for_watch(events); + } + } + +} + static int wait_for_backend_state_changed(struct tpmfro...

...nt_sync(dev); @@ -289,7 +289,6 @@ void shutdown_blkfront(struct blkfront_dev *dev) XenbusStateInitialising, err); goto close; } - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); @@ -298,10 +297,10 @@ close: if (err) free(err); xenbus_unwatch_path_token(XBT_NIL, path, path); - snprintf(path, sizeof(path), "%s/ring-ref", nodename); - xenbus_rm(XBT_NIL, path); -...

The following series of 10 patches is a merge of the xenfb and xenconsoled functionality into the qemu-dm code. The general approach taken is to have qemu-dm provide two machine types - one for xen paravirt, the other for fullyvirt. For compatability the later is the default. The goals overall are to kill LibVNCServer, remove alot of code duplication and/or parallel impls of the same concepts, and

This is a pair of Xen para-virtual frontend device drivers: drivers/video/xen-fbfront.c provides a framebuffer, and drivers/input/xen-kbdfront provides keyboard and mouse. The backends run in dom0 user space. I started with the Xen version at http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/ca05cf1a9bdc Differences to that Xen version, for those who care: * Rewritten on top of fb deferred

This is a pair of Xen para-virtual frontend device drivers: drivers/video/xen-fbfront.c provides a framebuffer, and drivers/input/xen-kbdfront provides keyboard and mouse. The backends run in dom0 user space. I started with the Xen version at http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/ca05cf1a9bdc Differences to that Xen version, for those who care: * Rewritten on top of fb deferred

This is a pair of Xen para-virtual frontend device drivers: drivers/video/xen-fbfront.c provides a framebuffer, and drivers/input/xen-kbdfront provides keyboard and mouse. The backends run in dom0 user space. I started with the Xen version at http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/ca05cf1a9bdc Differences to that Xen version, for those who care: * Rewritten on top of fb deferred