[pve-devel] [PATCH kernel/manager 0/5] fix #5430: ocfs2 io_uring read

[pve-devel] [PATCH kernel/manager 0/5] fix #5430: ocfs2 io_uring read

[Daniel Kral]

Since around Linux kernel version 6.7 [0], and as reported by users
kernel version `6.8.4-2-pve`, a bug was introduced by a refactoring of
the io_read function in the io_uring subsystem. This causes any VM to
fail to start, when io_uring is used for CDROM drives (including
CloudInit drives) and VM disks (even though I could not reproduce the
latter).

This patch series contains the following three changes to fix this:

1. a recent (mainlined) patch that fixes the bug in io_uring (#1),
2. allow changes to aio/cache options for CDROMs in the GUI (#2-3),
3. allow changes to aio/cache options for CloudInit in the GUI (#4-5).


# pve-kernel (patch #1)

I have tested the pve-kernel patch by testing the kernel "side-by-side"
(reboot between unpatched and patched 6.8.12-2-pve kernel) with a local
minimal ocfs2 setup, which I setup in PVE as a regular directory storage
with a non-PVE-managed mountpoint:

```
apt install ocfs2-tools
mkfs.ocfs2 /dev/sde
o2cb add-cluster ocfs2test
o2cb add-node ocfs2test <hostname> --ip <local-ip>
echo "kernel.panic_on_oops = 1" > /etc/sysctl.conf
echo "kernel.panic = 30" > /etc/sysctl.conf
o2cb register-cluster ocfs2test
mkdir -p /mnt/ocfs2test
mount /dev/sde /mnt/ocfs2test
pvesm add dir ocfs2test --path /mnt/ocfs2test --is_mountpoint yes
`

The patched kernel successfully fixed the described issue with ocfs2 for
CDROM images and CloudInit drive images in any format. I also tested the
same for a few other storages using io_uring (ZFS, NFS and ext4) and
there were no regressions on my side.


# pve-manager (patch #2 - #5)

The last two UI changes are an optional part that was discussed off-list
as a solution before I knew about the kernel patch and I would still
propose it as a useful set of changes.

These changes allow users to change the cache and async I/O options for
both CDROM and CloudInit drives. These changes are not necessary for the
whole patch series and can be applied separately, or dropped.

Another discussion to this patch series - as Shannon and Fabian have
mentioned to me off-list - was if there are actual benefits for CDROM
and CloudInit drives to be read with io_uring enabled.

[0] This is the commit hash that was mentioned as the bug cause:

```
# git describe --contains a08d195b586a217d76b42062f88f375a3eedda4d
v6.7-rc1~139^2~14
```

pve-kernel:

Daniel Kral (1):
  fix #5430: cherry-pick fix for ocfs2 io_uring rw issues

 ...t-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch


pve-manager:

Daniel Kral (4):
  ui: vm: factor out async I/O type selector
  fix #5430: ui: vm: add aio and cache selectors to edit panel
  ui: vm: make cloudinit drive editable
  fix #5430: ui: vm: allow editing cloudinit aio and cache options

 www/manager6/Makefile                    |   1 +
 www/manager6/form/AsyncIOTypeSelector.js |  10 ++
 www/manager6/qemu/CDEdit.js              |  30 +++++-
 www/manager6/qemu/CIDriveEdit.js         | 114 ++++++++++++++++++-----
 www/manager6/qemu/HDEdit.js              |  10 +-
 www/manager6/qemu/HardwareView.js        |   4 +-
 6 files changed, 136 insertions(+), 33 deletions(-)
 create mode 100644 www/manager6/form/AsyncIOTypeSelector.js


Summary over all repositories:
  7 files changed, 181 insertions(+), 33 deletions(-)

-- 
Generated by git-murpp 0.7.2


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[pve-devel] [PATCH kernel 1/5] fix #5430: cherry-pick fix for ocfs2 io_uring rw issues

[Daniel Kral]

Reported in the community forum [0].

This fixes an issue with read/write operations done on ocfs2 with
io_uring. This has caused QEMU guests to be unable to determine the file
format at [1] because of an unsuccessful read and therefore could not
boot, which has been resolved with this patch.

This patch is already merged in Jens Axboe's linux-block tree and also
merged in the mainline v6.12 prepatch kernels:

> # git tag --contains c0a9d496e0fece67db777bd48550376cf2960c47
> v6.12-rc1
> v6.12-rc2
> v6.13-rc3

[0] https://forum.proxmox.com/threads/140273/post-702007
[1] https://elixir.bootlin.com/qemu/v9.0.2/source/block.c#L1031

Signed-off-by: Daniel Kral <d.kral@proxmox.com>
---
 ...t-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch

diff --git a/patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch b/patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch
new file mode 100644
index 0000000..7187c94
--- /dev/null
+++ b/patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch
@@ -0,0 +1,45 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jens Axboe <axboe@kernel.dk>
+Date: Tue, 10 Sep 2024 08:30:57 -0600
+Subject: [PATCH] io_uring/rw: treat -EOPNOTSUPP for IOCB_NOWAIT like -EAGAIN
+
+Some file systems, ocfs2 in this case, will return -EOPNOTSUPP for
+an IOCB_NOWAIT read/write attempt. While this can be argued to be
+correct, the usual return value for something that requires blocking
+issue is -EAGAIN.
+
+A refactoring io_uring commit dropped calling kiocb_done() for
+negative return values, which is otherwise where we already do that
+transformation. To ensure we catch it in both spots, check it in
+__io_read() itself as well.
+
+Reported-by: Robert Sander <r.sander@heinlein-support.de>
+Link: https://fosstodon.org/@gurubert@mastodon.gurubert.de/113112431889638440
+Cc: stable@vger.kernel.org
+Fixes: a08d195b586a ("io_uring/rw: split io_read() into a helper")
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+(cherry picked from commit c0a9d496e0fece67db777bd48550376cf2960c47)
+Signed-off-by: Daniel Kral <d.kral@proxmox.com>
+---
+ io_uring/rw.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/io_uring/rw.c b/io_uring/rw.c
+index c3c154790e45..ed7f67097572 100644
+--- a/io_uring/rw.c
++++ b/io_uring/rw.c
+@@ -825,6 +825,14 @@ static int __io_read(struct io_kiocb *req, unsigned int issue_flags)
+ 
+ 	ret = io_iter_do_read(rw, &s->iter);
+ 
++	/*
++	 * Some file systems like to return -EOPNOTSUPP for an IOCB_NOWAIT
++	 * issue, even though they should be returning -EAGAIN. To be safe,
++	 * retry from blocking context for either.
++	 */
++	if (ret == -EOPNOTSUPP && force_nonblock)
++		ret = -EAGAIN;
++
+ 	if (ret == -EAGAIN || (req->flags & REQ_F_REISSUE)) {
+ 		req->flags &= ~REQ_F_REISSUE;
+ 		/*
-- 
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[pve-devel] [PATCH manager 2/5] ui: vm: factor out async I/O type selector

[Daniel Kral]

Factors out the combo box used for the Async I/O combo box selector,
which is used in the Disk Edit modal window in the VM "Hardware" tab and
the "Disks" tab in the Create Wizard, to reuse it in a future commit.

Signed-off-by: Daniel Kral <d.kral@proxmox.com>
---
 www/manager6/Makefile                    |  1 +
 www/manager6/form/AsyncIOTypeSelector.js | 10 ++++++++++
 www/manager6/qemu/HDEdit.js              | 10 ++--------
 3 files changed, 13 insertions(+), 8 deletions(-)
 create mode 100644 www/manager6/form/AsyncIOTypeSelector.js

diff --git a/www/manager6/Makefile b/www/manager6/Makefile
index 2c3a822b..74a61aa8 100644
--- a/www/manager6/Makefile
+++ b/www/manager6/Makefile
@@ -21,6 +21,7 @@ JSSRC= 							\
 	form/ACMEAccountSelector.js			\
 	form/ACMEPluginSelector.js			\
 	form/AgentFeatureSelector.js			\
+	form/AsyncIOTypeSelector.js			\
 	form/BackupCompressionSelector.js		\
 	form/BackupModeSelector.js			\
 	form/BandwidthSelector.js			\
diff --git a/www/manager6/form/AsyncIOTypeSelector.js b/www/manager6/form/AsyncIOTypeSelector.js
new file mode 100644
index 00000000..83fb40b5
--- /dev/null
+++ b/www/manager6/form/AsyncIOTypeSelector.js
@@ -0,0 +1,10 @@
+Ext.define('PVE.form.AsyncIOTypeSelector', {
+    extend: 'Proxmox.form.KVComboBox',
+    alias: ['widget.AsyncIOTypeSelector'],
+    comboItems: [
+	['__default__', Proxmox.Utils.defaultText + ' (io_uring)'],
+	['io_uring', 'io_uring'],
+	['native', 'native'],
+	['threads', 'threads'],
+    ],
+});
diff --git a/www/manager6/qemu/HDEdit.js b/www/manager6/qemu/HDEdit.js
index b78647ec..37215361 100644
--- a/www/manager6/qemu/HDEdit.js
+++ b/www/manager6/qemu/HDEdit.js
@@ -306,17 +306,11 @@ Ext.define('PVE.qemu.HDInputPanel', {
 		name: 'noreplicate',
 	    },
 	    {
-		xtype: 'proxmoxKVComboBox',
+		xtype: 'AsyncIOTypeSelector',
 		name: 'aio',
+		value: '__default__',
 		fieldLabel: gettext('Async IO'),
 		allowBlank: false,
-		value: '__default__',
-		comboItems: [
-		    ['__default__', Proxmox.Utils.defaultText + ' (io_uring)'],
-		    ['io_uring', 'io_uring'],
-		    ['native', 'native'],
-		    ['threads', 'threads'],
-		],
 	    },
 	);
 
-- 
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[pve-devel] [PATCH manager 3/5] fix #5430: ui: vm: allow editing cdrom aio and cache options

[Daniel Kral]

Adds cache and async I/O selectors to the CDROM Drive Edit modal window
in the "Hardware" tab. This allows users to set these options in the
WebGUI when the VM fails to start because the underlying storage
(driver) does not support a specific set of configurations.

Signed-off-by: Daniel Kral <d.kral@proxmox.com>
---
 www/manager6/qemu/CDEdit.js | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/www/manager6/qemu/CDEdit.js b/www/manager6/qemu/CDEdit.js
index 3cc16205..f15905e7 100644
--- a/www/manager6/qemu/CDEdit.js
+++ b/www/manager6/qemu/CDEdit.js
@@ -7,6 +7,7 @@ Ext.define('PVE.qemu.CDInputPanel', {
     onGetValues: function(values) {
 	var me = this;
 
+	var params = {};
 	var confid = me.confid || values.controller + values.deviceid;
 
 	me.drive.media = 'cdrom';
@@ -18,7 +19,8 @@ Ext.define('PVE.qemu.CDInputPanel', {
 	    me.drive.file = 'none';
 	}
 
-	var params = {};
+	PVE.Utils.propertyStringSet(me.drive, values.cache, 'cache');
+	PVE.Utils.propertyStringSet(me.drive, values.aio, 'aio');
 
 	params[confid] = PVE.Parser.printQemuDrive(me.drive);
 
@@ -46,6 +48,9 @@ Ext.define('PVE.qemu.CDInputPanel', {
 	    values.cdimage = drive.file;
 	}
 
+	values.cache = drive.cache || '__default__';
+	values.aio = drive.aio || '__default__';
+
 	me.drive = drive;
 
 	me.setValues(values);
@@ -118,6 +123,27 @@ Ext.define('PVE.qemu.CDInputPanel', {
 
 	me.items = items;
 
+	// those are only useful for specific niche use cases
+	if (!me.insideWizard) {
+	    me.advancedColumn1 = [
+		{
+		    xtype: 'CacheTypeSelector',
+		    name: 'cache',
+		    value: '__default__',
+		    fieldLabel: gettext('Cache'),
+		},
+	    ];
+	    me.advancedColumn2 = [
+		{
+		    xtype: 'AsyncIOTypeSelector',
+		    name: 'aio',
+		    value: '__default__',
+		    fieldLabel: gettext('Async IO'),
+		    allowBlank: false,
+		},
+	    ];
+	}
+
 	me.callParent();
     },
 });
@@ -125,7 +151,7 @@ Ext.define('PVE.qemu.CDInputPanel', {
 Ext.define('PVE.qemu.CDEdit', {
     extend: 'Proxmox.window.Edit',
 
-    width: 400,
+    width: 550,
 
     initComponent: function() {
 	var me = this;
-- 
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[pve-devel] [PATCH manager 4/5] ui: vm: make cloudinit drive editable

[Daniel Kral]

Implements the functionality to allow subsequent changes to the
CloudInit drive under the VM "Hardware" tab. This is needed to implement
further changes in a future commit.

Signed-off-by: Daniel Kral <d.kral@proxmox.com>
---
 www/manager6/qemu/CIDriveEdit.js  | 100 ++++++++++++++++++++++--------
 www/manager6/qemu/HardwareView.js |   4 +-
 2 files changed, 77 insertions(+), 27 deletions(-)

diff --git a/www/manager6/qemu/CIDriveEdit.js b/www/manager6/qemu/CIDriveEdit.js
index a9ca8bf1..0494f9c5 100644
--- a/www/manager6/qemu/CIDriveEdit.js
+++ b/www/manager6/qemu/CIDriveEdit.js
@@ -4,28 +4,55 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
 
     insideWizard: false,
 
-    vmconfig: {}, // used to select usused disks
+    vmconfig: {}, // used to select unused disks
 
     onGetValues: function(values) {
 	var me = this;
 
-	var drive = {};
 	var params = {};
-	drive.file = values.hdstorage + ":cloudinit";
-	drive.format = values.diskformat;
-	params[values.controller + values.deviceid] = PVE.Parser.printQemuDrive(drive);
+	var confid = me.confid || values.controller + values.deviceid;
+
+	// only set these when we create cloudinit files
+	if (me.isCreate) {
+	    me.drive.file = values.hdstorage + ":cloudinit";
+	    me.drive.format = values.diskformat;
+	}
+
+	params[confid] = PVE.Parser.printQemuDrive(me.drive);
+
 	return params;
     },
 
     setNodename: function(nodename) {
 	var me = this;
+
 	me.down('#hdstorage').setNodename(nodename);
 	me.down('#hdimage').setStorage(undefined, nodename);
     },
 
     setVMConfig: function(config) {
 	var me = this;
-	me.down('#drive').setVMConfig(config, 'cdrom');
+
+	let bussel = me.down('#drive');
+	if (bussel) {
+	    bussel.setVMConfig(config, 'cdrom');
+	}
+    },
+
+    setDrive: function(drive) {
+	var me = this;
+
+	var values = {};
+
+	var match = drive.file.match(/^([^:]+):/);
+	if (match) {
+	    values.hdstorage = match[1];
+	}
+	values.hdimage = drive.file;
+
+	me.drive = drive;
+
+	me.setValues(values);
     },
 
     initComponent: function() {
@@ -33,22 +60,30 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
 
 	me.drive = {};
 
-	me.items = [
-	    {
+	let items = [];
+
+	if (me.isCreate) {
+	    items.push({
 		xtype: 'pveControllerSelector',
 		withVirtIO: false,
 		itemId: 'drive',
 		fieldLabel: gettext('CloudInit Drive'),
 		name: 'drive',
-	    },
-	    {
-		xtype: 'pveDiskStorageSelector',
-		itemId: 'storselector',
-		storageContent: 'images',
-		nodename: me.nodename,
-		hideSize: true,
-	    },
-	];
+	    });
+	}
+
+	items.push({
+	    xtype: 'pveDiskStorageSelector',
+	    itemId: 'storselector',
+	    storageContent: 'images',
+	    nodename: me.nodename,
+	    disabled: !me.isCreate,
+	    hideFormat: !me.isCreate,
+	    hideSize: true,
+	});
+
+	me.items = items;
+
 	me.callParent();
     },
 });
@@ -57,9 +92,6 @@ Ext.define('PVE.qemu.CIDriveEdit', {
     extend: 'Proxmox.window.Edit',
     xtype: 'pveCIDriveEdit',
 
-    isCreate: true,
-    subject: gettext('CloudInit Drive'),
-
     initComponent: function() {
 	var me = this;
 
@@ -68,17 +100,35 @@ Ext.define('PVE.qemu.CIDriveEdit', {
 	    throw "no node name specified";
 	}
 
-	me.items = [{
-	    xtype: 'pveCIDriveInputPanel',
-	    itemId: 'cipanel',
+	me.isCreate = !me.confid;
+
+	var ipanel = Ext.create('PVE.qemu.CIDriveInputPanel', {
+	    confid: me.confid,
 	    nodename: nodename,
-	}];
+	    isCreate: me.isCreate,
+	});
+
+	Ext.applyIf(me, {
+	    subject: gettext('CloudInit Drive'),
+	    items: [ipanel],
+	});
 
 	me.callParent();
 
 	me.load({
 	    success: function(response, opts) {
-		me.down('#cipanel').setVMConfig(response.result.data);
+		ipanel.setVMConfig(response.result.data);
+
+		if (me.confid) {
+		    var value = response.result.data[me.confid];
+		    var drive = PVE.Parser.parseQemuDrive(me.confid, value);
+		    if (!drive) {
+			Ext.Msg.alert('Error', 'Unable to parse drive options');
+			me.close();
+			return;
+		    }
+		    ipanel.setDrive(drive);
+		}
 	    },
 	});
     },
diff --git a/www/manager6/qemu/HardwareView.js b/www/manager6/qemu/HardwareView.js
index 86d5f4cf..c7a77bd9 100644
--- a/www/manager6/qemu/HardwareView.js
+++ b/www/manager6/qemu/HardwareView.js
@@ -350,7 +350,7 @@ Ext.define('PVE.qemu.HardwareView', {
 	    if (rowdef.isOnStorageBus) {
 		let value = me.getObjectValue(rec.data.key, '', true);
 		if (isCloudInitKey(value)) {
-		    return;
+		    editor = 'PVE.qemu.CIDriveEdit';
 		} else if (value.match(/media=cdrom/)) {
 		    editor = 'PVE.qemu.CDEdit';
 		} else if (!diskCap) {
@@ -629,7 +629,7 @@ Ext.define('PVE.qemu.HardwareView', {
 	    remove_btn.RESTMethod = isUnusedDisk || (isDisk && isRunning) ? 'POST' : 'PUT';
 
 	    edit_btn.setDisabled(
-	        deleted || !row.editor || isCloudInit || (isCDRom && !cdromCap) || (isDisk && !diskCap));
+	        deleted || !row.editor || (isCDRom && !cdromCap) || (isDisk && !diskCap));
 
 	    diskaction_btn.setDisabled(
 		pending ||
-- 
2.39.5



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[pve-devel] [PATCH manager 5/5] fix #5430: ui: vm: allow editing cloudinit aio and cache options

[Daniel Kral]

Adds cache and async I/O selectors to the CloudInit Drive Edit modal
window in the "Hardware" tab. This allows users to set these options in
the WebGUI when the VM fails to start because the underlying storage
(driver) does not support a specific set of configurations.

Signed-off-by: Daniel Kral <d.kral@proxmox.com>
---
 www/manager6/qemu/CIDriveEdit.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/www/manager6/qemu/CIDriveEdit.js b/www/manager6/qemu/CIDriveEdit.js
index 0494f9c5..2508cd8e 100644
--- a/www/manager6/qemu/CIDriveEdit.js
+++ b/www/manager6/qemu/CIDriveEdit.js
@@ -18,6 +18,9 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
 	    me.drive.format = values.diskformat;
 	}
 
+	PVE.Utils.propertyStringSet(me.drive, values.cache, 'cache');
+	PVE.Utils.propertyStringSet(me.drive, values.aio, 'aio');
+
 	params[confid] = PVE.Parser.printQemuDrive(me.drive);
 
 	return params;
@@ -50,6 +53,9 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
 	}
 	values.hdimage = drive.file;
 
+	values.cache = drive.cache || '__default__';
+	values.aio = drive.aio || '__default__';
+
 	me.drive = drive;
 
 	me.setValues(values);
@@ -84,6 +90,22 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
 
 	me.items = items;
 
+	me.advancedColumnB = [
+	    {
+		xtype: 'CacheTypeSelector',
+		name: 'cache',
+		value: '__default__',
+		fieldLabel: gettext('Cache'),
+	    },
+	    {
+		xtype: 'AsyncIOTypeSelector',
+		name: 'aio',
+		value: '__default__',
+		fieldLabel: gettext('Async IO'),
+		allowBlank: false,
+	    },
+	];
+
 	me.callParent();
     },
 });
-- 
2.39.5



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Re: [pve-devel] [PATCH kernel 1/5] fix #5430: cherry-pick fix for ocfs2 io_uring rw issues

[Friedrich Weber]

On 16/10/2024 18:47, Daniel Kral wrote:
> Reported in the community forum [0].
> 
> This fixes an issue with read/write operations done on ocfs2 with
> io_uring. This has caused QEMU guests to be unable to determine the file
> format at [1] because of an unsuccessful read and therefore could not
> boot, which has been resolved with this patch.

As a smoke test, I ran a 6.8.12-2 kernel with this patch applied on my
workstation today (with a couple of VMs using io_uring on LVM/ZFS), and
did not notice anything out of the ordinary. I did not get around to
actually test the issue with ocfs2, though.


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Re: [pve-devel] [PATCH manager 4/5] ui: vm: make cloudinit drive editable

[Lukas Wagner]

Some suggestions inline. Skimmed over the code to spot style issues, correctness
was not really checked.

Same remarks regarding `var` vs `let` apply also to this patch.

On  2024-10-16 18:47, Daniel Kral wrote:
> Implements the functionality to allow subsequent changes to the
> CloudInit drive under the VM "Hardware" tab. This is needed to implement
> further changes in a future commit.
> 
> Signed-off-by: Daniel Kral <d.kral@proxmox.com>
> ---
>  www/manager6/qemu/CIDriveEdit.js  | 100 ++++++++++++++++++++++--------
>  www/manager6/qemu/HardwareView.js |   4 +-
>  2 files changed, 77 insertions(+), 27 deletions(-)
> 
> diff --git a/www/manager6/qemu/CIDriveEdit.js b/www/manager6/qemu/CIDriveEdit.js
> index a9ca8bf1..0494f9c5 100644
> --- a/www/manager6/qemu/CIDriveEdit.js
> +++ b/www/manager6/qemu/CIDriveEdit.js
> @@ -4,28 +4,55 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
>  
>      insideWizard: false,
>  
> -    vmconfig: {}, // used to select usused disks
> +    vmconfig: {}, // used to select unused disks

Maybe split this typo fix into a separate commit?

>  
>      onGetValues: function(values) {
>  	var me = this;
>  
> -	var drive = {};
>  	var params = {};
> -	drive.file = values.hdstorage + ":cloudinit";
> -	drive.format = values.diskformat;
> -	params[values.controller + values.deviceid] = PVE.Parser.printQemuDrive(drive);
> +	var confid = me.confid || values.controller + values.deviceid;
> +
> +	// only set these when we create cloudinit files
> +	if (me.isCreate) {
> +	    me.drive.file = values.hdstorage + ":cloudinit";
> +	    me.drive.format = values.diskformat;
> +	}
> +
> +	params[confid] = PVE.Parser.printQemuDrive(me.drive);
> +
>  	return params;
>      },
>  
>      setNodename: function(nodename) {
>  	var me = this;
> +

Maybe do this in a separate commit if you
want to do a change like this to e.g. improve readability

>  	me.down('#hdstorage').setNodename(nodename);
>  	me.down('#hdimage').setStorage(undefined, nodename);
>      },
>  
>      setVMConfig: function(config) {
>  	var me = this;
> -	me.down('#drive').setVMConfig(config, 'cdrom');
> +
> +	let bussel = me.down('#drive');
> +	if (bussel) {
> +	    bussel.setVMConfig(config, 'cdrom');
> +	}
> +    },

bussel as a in ... bus selector? Maybe rather call it busSelector, has less of a
'huh?'-factor :)

> +
> +    setDrive: function(drive) {
> +	var me = this;
> +
> +	var values = {};
> +
> +	var match = drive.file.match(/^([^:]+):/);
> +	if (match) {
> +	    values.hdstorage = match[1];
> +	}
> +	values.hdimage = drive.file;
> +
> +	me.drive = drive;
> +
> +	me.setValues(values);
>      },
>  
>      initComponent: function() {
> @@ -33,22 +60,30 @@ Ext.define('PVE.qemu.CIDriveInputPanel', {
>  
>  	me.drive = {};
>  
> -	me.items = [
> -	    {
> +	let items = [];
> +
> +	if (me.isCreate) {
> +	    items.push({
>  		xtype: 'pveControllerSelector',
>  		withVirtIO: false,
>  		itemId: 'drive',
>  		fieldLabel: gettext('CloudInit Drive'),
>  		name: 'drive',
> -	    },
> -	    {
> -		xtype: 'pveDiskStorageSelector',
> -		itemId: 'storselector',
> -		storageContent: 'images',
> -		nodename: me.nodename,
> -		hideSize: true,
> -	    },
> -	];
> +	    });
> +	}
> +
> +	items.push({
> +	    xtype: 'pveDiskStorageSelector',
> +	    itemId: 'storselector',
> +	    storageContent: 'images',
> +	    nodename: me.nodename,
> +	    disabled: !me.isCreate,
> +	    hideFormat: !me.isCreate,
> +	    hideSize: true,
> +	});
> +
> +	me.items = items;
> +
>  	me.callParent();
>      },
>  });
> @@ -57,9 +92,6 @@ Ext.define('PVE.qemu.CIDriveEdit', {
>      extend: 'Proxmox.window.Edit',
>      xtype: 'pveCIDriveEdit',
>  
> -    isCreate: true,
> -    subject: gettext('CloudInit Drive'),
> -
>      initComponent: function() {
>  	var me = this;
>  
> @@ -68,17 +100,35 @@ Ext.define('PVE.qemu.CIDriveEdit', {
>  	    throw "no node name specified";
>  	}
>  
> -	me.items = [{
> -	    xtype: 'pveCIDriveInputPanel',
> -	    itemId: 'cipanel',
> +	me.isCreate = !me.confid;
> +
> +	var ipanel = Ext.create('PVE.qemu.CIDriveInputPanel', {
> +	    confid: me.confid,
>  	    nodename: nodename,
> -	}];
> +	    isCreate: me.isCreate,
> +	});
> +
> +	Ext.applyIf(me, {
> +	    subject: gettext('CloudInit Drive'),
> +	    items: [ipanel],
> +	});
>  
>  	me.callParent();
>  
>  	me.load({
>  	    success: function(response, opts) {
> -		me.down('#cipanel').setVMConfig(response.result.data);
> +		ipanel.setVMConfig(response.result.data);
> +
> +		if (me.confid) {
> +		    var value = response.result.data[me.confid];
> +		    var drive = PVE.Parser.parseQemuDrive(me.confid, value);
> +		    if (!drive) {
> +			Ext.Msg.alert('Error', 'Unable to parse drive options');
> +			me.close();
> +			return;
> +		    }
> +		    ipanel.setDrive(drive);
> +		}
>  	    },
>  	});
>      },
> diff --git a/www/manager6/qemu/HardwareView.js b/www/manager6/qemu/HardwareView.js
> index 86d5f4cf..c7a77bd9 100644
> --- a/www/manager6/qemu/HardwareView.js
> +++ b/www/manager6/qemu/HardwareView.js
> @@ -350,7 +350,7 @@ Ext.define('PVE.qemu.HardwareView', {
>  	    if (rowdef.isOnStorageBus) {
>  		let value = me.getObjectValue(rec.data.key, '', true);
>  		if (isCloudInitKey(value)) {
> -		    return;
> +		    editor = 'PVE.qemu.CIDriveEdit';
>  		} else if (value.match(/media=cdrom/)) {
>  		    editor = 'PVE.qemu.CDEdit';
>  		} else if (!diskCap) {
> @@ -629,7 +629,7 @@ Ext.define('PVE.qemu.HardwareView', {
>  	    remove_btn.RESTMethod = isUnusedDisk || (isDisk && isRunning) ? 'POST' : 'PUT';
>  
>  	    edit_btn.setDisabled(
> -	        deleted || !row.editor || isCloudInit || (isCDRom && !cdromCap) || (isDisk && !diskCap));
> +	        deleted || !row.editor || (isCDRom && !cdromCap) || (isDisk && !diskCap));
>  
>  	    diskaction_btn.setDisabled(
>  		pending ||

-- 
- Lukas


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Re: [pve-devel] [PATCH manager 2/5] ui: vm: factor out async I/O type selector

[Lukas Wagner]

Hello, one comment inline.

Skimmed over the code to spot style issues, correctness
was not really checked.

On  2024-10-16 18:47, Daniel Kral wrote:
> Factors out the combo box used for the Async I/O combo box selector,
> which is used in the Disk Edit modal window in the VM "Hardware" tab and
> the "Disks" tab in the Create Wizard, to reuse it in a future commit.
> 
> Signed-off-by: Daniel Kral <d.kral@proxmox.com>
> ---
>  www/manager6/Makefile                    |  1 +
>  www/manager6/form/AsyncIOTypeSelector.js | 10 ++++++++++
>  www/manager6/qemu/HDEdit.js              | 10 ++--------
>  3 files changed, 13 insertions(+), 8 deletions(-)
>  create mode 100644 www/manager6/form/AsyncIOTypeSelector.js
> 
> diff --git a/www/manager6/Makefile b/www/manager6/Makefile
> index 2c3a822b..74a61aa8 100644
> --- a/www/manager6/Makefile
> +++ b/www/manager6/Makefile
> @@ -21,6 +21,7 @@ JSSRC= 							\
>  	form/ACMEAccountSelector.js			\
>  	form/ACMEPluginSelector.js			\
>  	form/AgentFeatureSelector.js			\
> +	form/AsyncIOTypeSelector.js			\
>  	form/BackupCompressionSelector.js		\
>  	form/BackupModeSelector.js			\
>  	form/BandwidthSelector.js			\
> diff --git a/www/manager6/form/AsyncIOTypeSelector.js b/www/manager6/form/AsyncIOTypeSelector.js
> new file mode 100644
> index 00000000..83fb40b5
> --- /dev/null
> +++ b/www/manager6/form/AsyncIOTypeSelector.js
> @@ -0,0 +1,10 @@
> +Ext.define('PVE.form.AsyncIOTypeSelector', {
> +    extend: 'Proxmox.form.KVComboBox',
> +    alias: ['widget.AsyncIOTypeSelector'],

Usually we use a prefix `pve` (for components defined in pve-manager) or `pmx`
(for components defined in proxmox-widget-toolkit`) prefix, so this
should be `widget.pveAsyncIoTypeSelector`


> +    comboItems: [
> +	['__default__', Proxmox.Utils.defaultText + ' (io_uring)'],
> +	['io_uring', 'io_uring'],
> +	['native', 'native'],
> +	['threads', 'threads'],
> +    ],
> +});
> diff --git a/www/manager6/qemu/HDEdit.js b/www/manager6/qemu/HDEdit.js
> index b78647ec..37215361 100644
> --- a/www/manager6/qemu/HDEdit.js
> +++ b/www/manager6/qemu/HDEdit.js
> @@ -306,17 +306,11 @@ Ext.define('PVE.qemu.HDInputPanel', {
>  		name: 'noreplicate',
>  	    },
>  	    {
> -		xtype: 'proxmoxKVComboBox',
> +		xtype: 'AsyncIOTypeSelector',
>  		name: 'aio',
> +		value: '__default__',
>  		fieldLabel: gettext('Async IO'),
>  		allowBlank: false,
> -		value: '__default__',
> -		comboItems: [
> -		    ['__default__', Proxmox.Utils.defaultText + ' (io_uring)'],
> -		    ['io_uring', 'io_uring'],
> -		    ['native', 'native'],
> -		    ['threads', 'threads'],
> -		],
>  	    },
>  	);
>  

-- 
- Lukas


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Re: [pve-devel] [PATCH manager 3/5] fix #5430: ui: vm: allow editing cdrom aio and cache options

[Lukas Wagner]

Some suggestions inline. Skimmed over the code to spot style issues, correctness
was not really checked.

On  2024-10-16 18:47, Daniel Kral wrote:
> Adds cache and async I/O selectors to the CDROM Drive Edit modal window
> in the "Hardware" tab. This allows users to set these options in the
> WebGUI when the VM fails to start because the underlying storage
> (driver) does not support a specific set of configurations.
> 
> Signed-off-by: Daniel Kral <d.kral@proxmox.com>
> ---
>  www/manager6/qemu/CDEdit.js | 30 ++++++++++++++++++++++++++++--
>  1 file changed, 28 insertions(+), 2 deletions(-)
> 
> diff --git a/www/manager6/qemu/CDEdit.js b/www/manager6/qemu/CDEdit.js
> index 3cc16205..f15905e7 100644
> --- a/www/manager6/qemu/CDEdit.js
> +++ b/www/manager6/qemu/CDEdit.js
> @@ -7,6 +7,7 @@ Ext.define('PVE.qemu.CDInputPanel', {
>      onGetValues: function(values) {
>  	var me = this;
>  
> +	var params = {};

Note: For new code we should use `let` or `const` insted of `var` [1].
When touching existing code can IMO also change it to `let`, but of course
familiarize yourself first with the differences between the three and make sure
that you don't introduce any unwanted changes (e.g. due to changed scoping).

[1]: https://pve.proxmox.com/wiki/Javascript_Style_Guide

>  	var confid = me.confid || values.controller + values.deviceid;
>  
>  	me.drive.media = 'cdrom';
> @@ -18,7 +19,8 @@ Ext.define('PVE.qemu.CDInputPanel', {
>  	    me.drive.file = 'none';
>  	}
>  
> -	var params = {};
> +	PVE.Utils.propertyStringSet(me.drive, values.cache, 'cache');
> +	PVE.Utils.propertyStringSet(me.drive, values.aio, 'aio');
>  
>  	params[confid] = PVE.Parser.printQemuDrive(me.drive);
>  
> @@ -46,6 +48,9 @@ Ext.define('PVE.qemu.CDInputPanel', {
>  	    values.cdimage = drive.file;
>  	}
>  
> +	values.cache = drive.cache || '__default__';
> +	values.aio = drive.aio || '__default__';
> +
>  	me.drive = drive;
>  
>  	me.setValues(values);
> @@ -118,6 +123,27 @@ Ext.define('PVE.qemu.CDInputPanel', {
>  
>  	me.items = items;
>  
> +	// those are only useful for specific niche use cases
> +	if (!me.insideWizard) {
> +	    me.advancedColumn1 = [
> +		{
> +		    xtype: 'CacheTypeSelector',
> +		    name: 'cache',
> +		    value: '__default__',
> +		    fieldLabel: gettext('Cache'),
> +		},
> +	    ];
> +	    me.advancedColumn2 = [
> +		{
> +		    xtype: 'AsyncIOTypeSelector',
> +		    name: 'aio',
> +		    value: '__default__',
> +		    fieldLabel: gettext('Async IO'),
> +		    allowBlank: false,
> +		},
> +	    ];
> +	}
> +
>  	me.callParent();
>      },
>  });
> @@ -125,7 +151,7 @@ Ext.define('PVE.qemu.CDInputPanel', {
>  Ext.define('PVE.qemu.CDEdit', {
>      extend: 'Proxmox.window.Edit',
>  
> -    width: 400,
> +    width: 550,

This change is not mentioned in the commit message and should probably
be split out into its own commit.

>  
>      initComponent: function() {
>  	var me = this;

-- 
- Lukas


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[pve-devel] applied: [PATCH kernel 1/5] fix #5430: cherry-pick fix for ocfs2 io_uring rw issues

[Thomas Lamprecht]

Am 16/10/2024 um 18:47 schrieb Daniel Kral:
> Reported in the community forum [0].
> 
> This fixes an issue with read/write operations done on ocfs2 with
> io_uring. This has caused QEMU guests to be unable to determine the file
> format at [1] because of an unsuccessful read and therefore could not
> boot, which has been resolved with this patch.
> 
> This patch is already merged in Jens Axboe's linux-block tree and also
> merged in the mainline v6.12 prepatch kernels:
> 
>> # git tag --contains c0a9d496e0fece67db777bd48550376cf2960c47
>> v6.12-rc1
>> v6.12-rc2
>> v6.13-rc3
> 
> [0] https://forum.proxmox.com/threads/140273/post-702007
> [1] https://elixir.bootlin.com/qemu/v9.0.2/source/block.c#L1031
> 
> Signed-off-by: Daniel Kral <d.kral@proxmox.com>
> ---
>  ...t-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 patches/kernel/0021-io_uring-rw-treat-EOPNOTSUPP-for-IOCB_NOWAIT-like-EA.patch
> 
>

applied, thanks!


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Re: [pve-devel] [PATCH manager 3/5] fix #5430: ui: vm: allow editing cdrom aio and cache options

[Daniel Kral]

On 10/18/24 09:42, Lukas Wagner wrote:
>> @@ -125,7 +151,7 @@ Ext.define('PVE.qemu.CDInputPanel', {
>>   Ext.define('PVE.qemu.CDEdit', {
>>       extend: 'Proxmox.window.Edit',
>>   
>> -    width: 400,
>> +    width: 550,
> 
> This change is not mentioned in the commit message and should probably
> be split out into its own commit.

I added a small paragraph to the commit message, that makes that change 
more transparent and why it is needed in this commit, as the added 
options would be a bit messed up by the width limit ;).

Thanks for the style review! I've made the changes (including those in 
the other two replies) to the patch series and sent out a v2 [0].

[0] 
https://lore.proxmox.com/pve-devel/20241023112246.85637-1-d.kral@proxmox.com/


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