* Questions about udev rule and systemd-udev,relevant to mounting block device
@ 2018-03-01 10:35 Hongzhi, Song
2018-03-02 5:44 ` Hongzhi, Song
0 siblings, 1 reply; 5+ messages in thread
From: Hongzhi, Song @ 2018-03-01 10:35 UTC (permalink / raw)
To: Patches and discussions about the oe-core layer; +Cc: yocto
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Defect:
The exiting method of automount of udev in /oe-core/meta/ /is using
/automount.rules/ which call /mount.sh/ that using //bin/mount/ to mount
device.
But systemd-udevd detaches /mount()/ operations done within the service
from the rest of the system with MountFlag=slave, this means host can
not access device. (e.g. Executing /mkfs.ext4 /dev/sda1// prompts
//dev/sda1 is apparently in use by the system; will not make a
filesystem here!/)
Solution:
Systemd upstream suggest that the best way is to use "systemd-mount"
in udev rules, which will request the mount operation to be executed by
PID 1.
And I have tested it was effective.
Uncertain:
The exiting method is designed for /SysV-init /which is not
compatible to
systemd-udev, at least that's what I think. So I think that we should design
a new rule or organizational structure to be suitable for systemd-udev and
to mount deferent device. Dose anyone help do this? Or I can make some
improvements on the basis of the existing with "systemd-mount".
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [OE-core] Questions about udev rule and systemd-udev,relevant to mounting block device
2018-03-01 10:35 Questions about udev rule and systemd-udev,relevant to mounting block device Hongzhi, Song
@ 2018-03-02 5:44 ` Hongzhi, Song
0 siblings, 0 replies; 5+ messages in thread
From: Hongzhi, Song @ 2018-03-02 5:44 UTC (permalink / raw)
To: Patches and discussions about the oe-core layer; +Cc: yocto
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Hi all,
Does anyone have suggestion for me?
Thanks.
Hongzhi.Song
On 2018年03月01日 18:35, Hongzhi, Song wrote:
>
> Defect:
>
> The exiting method of automount of udev in /oe-core/meta/ /is using
>
> /automount.rules/ which call /mount.sh/ that using //bin/mount/ to
> mount device.
>
> But systemd-udevd detaches /mount()/ operations done within the service
>
> from the rest of the system with MountFlag=slave, this means host can
>
> not access device. (e.g. Executing /mkfs.ext4 /dev/sda1// prompts
>
> //dev/sda1 is apparently in use by the system; will not make a
> filesystem here!/)
>
>
> Solution:
>
> Systemd upstream suggest that the best way is to use "systemd-mount"
>
> in udev rules, which will request the mount operation to be executed
> by PID 1.
>
> And I have tested it was effective.
>
>
> Uncertain:
>
> The exiting method is designed for /SysV-init /which is not
> compatible to
>
> systemd-udev, at least that's what I think. So I think that we should
> design
>
> a new rule or organizational structure to be suitable for systemd-udev
> and
>
> to mount deferent device. Dose anyone help do this? Or I can make some
>
> improvements on the basis of the existing with "systemd-mount".
>
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Questions about udev rule and systemd-udev,relevant to mounting block device
@ 2018-03-02 5:44 ` Hongzhi, Song
0 siblings, 0 replies; 5+ messages in thread
From: Hongzhi, Song @ 2018-03-02 5:44 UTC (permalink / raw)
To: Patches and discussions about the oe-core layer; +Cc: yocto
[-- Attachment #1: Type: text/plain, Size: 1310 bytes --]
Hi all,
Does anyone have suggestion for me?
Thanks.
Hongzhi.Song
On 2018年03月01日 18:35, Hongzhi, Song wrote:
>
> Defect:
>
> The exiting method of automount of udev in /oe-core/meta/ /is using
>
> /automount.rules/ which call /mount.sh/ that using //bin/mount/ to
> mount device.
>
> But systemd-udevd detaches /mount()/ operations done within the service
>
> from the rest of the system with MountFlag=slave, this means host can
>
> not access device. (e.g. Executing /mkfs.ext4 /dev/sda1// prompts
>
> //dev/sda1 is apparently in use by the system; will not make a
> filesystem here!/)
>
>
> Solution:
>
> Systemd upstream suggest that the best way is to use "systemd-mount"
>
> in udev rules, which will request the mount operation to be executed
> by PID 1.
>
> And I have tested it was effective.
>
>
> Uncertain:
>
> The exiting method is designed for /SysV-init /which is not
> compatible to
>
> systemd-udev, at least that's what I think. So I think that we should
> design
>
> a new rule or organizational structure to be suitable for systemd-udev
> and
>
> to mount deferent device. Dose anyone help do this? Or I can make some
>
> improvements on the basis of the existing with "systemd-mount".
>
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [OE-core] Questions about udev rule and systemd-udev,relevant to mounting block device
2018-03-02 5:44 ` Hongzhi, Song
@ 2018-03-02 13:50 ` Vincent Prince
-1 siblings, 0 replies; 5+ messages in thread
From: Vincent Prince @ 2018-03-02 13:50 UTC (permalink / raw)
To: Hongzhi, Song
Cc: Yocto-mailing-list, Patches and discussions about the oe-core layer
[-- Attachment #1: Type: text/plain, Size: 1939 bytes --]
Hi,
I'm not sure what is your use case, but you can check usbmount[1][2]
or automount-usb[3] for example on how to use udev with systemd:
Regards,
Vincent
[1]https://github.com/rbrito/usbmount
[2]
https://github.com/nefethael/meta-random/blob/master/recipes-support/usbmount/usbmount_git.bb
[3]https://github.com/six-k/automount-usb
2018-03-02 6:44 GMT+01:00 Hongzhi, Song <hongzhi.song@windriver.com>:
> Hi all,
>
> Does anyone have suggestion for me?
>
> Thanks.
>
> Hongzhi.Song
>
> On 2018年03月01日 18:35, Hongzhi, Song wrote:
>
> Defect:
>
> The exiting method of automount of udev in *oe-core/meta/ *is using
>
> *automount.rules* which call *mount.sh* that using */bin/mount* to mount
> device.
>
> But systemd-udevd detaches *mount()* operations done within the service
>
> from the rest of the system with MountFlag=slave, this means host can
>
> not access device. (e.g. Executing *mkfs.ext4 /dev/sda1/* prompts
>
> */dev/sda1 is apparently in use by the system; will not make a filesystem
> here!*)
>
>
> Solution:
>
> Systemd upstream suggest that the best way is to use "systemd-mount"
>
> in udev rules, which will request the mount operation to be executed by
> PID 1.
>
> And I have tested it was effective.
>
>
> Uncertain:
>
> The exiting method is designed for *SysV-init *which is not
> compatible to
>
> systemd-udev, at least that's what I think. So I think that we should
> design
>
> a new rule or organizational structure to be suitable for systemd-udev and
>
> to mount deferent device. Dose anyone help do this? Or I can make some
>
> improvements on the basis of the existing with "systemd-mount".
>
>
>
>
> --
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Questions about udev rule and systemd-udev,relevant to mounting block device
@ 2018-03-02 13:50 ` Vincent Prince
0 siblings, 0 replies; 5+ messages in thread
From: Vincent Prince @ 2018-03-02 13:50 UTC (permalink / raw)
To: Hongzhi, Song
Cc: Yocto-mailing-list, Patches and discussions about the oe-core layer
[-- Attachment #1: Type: text/plain, Size: 1939 bytes --]
Hi,
I'm not sure what is your use case, but you can check usbmount[1][2]
or automount-usb[3] for example on how to use udev with systemd:
Regards,
Vincent
[1]https://github.com/rbrito/usbmount
[2]
https://github.com/nefethael/meta-random/blob/master/recipes-support/usbmount/usbmount_git.bb
[3]https://github.com/six-k/automount-usb
2018-03-02 6:44 GMT+01:00 Hongzhi, Song <hongzhi.song@windriver.com>:
> Hi all,
>
> Does anyone have suggestion for me?
>
> Thanks.
>
> Hongzhi.Song
>
> On 2018年03月01日 18:35, Hongzhi, Song wrote:
>
> Defect:
>
> The exiting method of automount of udev in *oe-core/meta/ *is using
>
> *automount.rules* which call *mount.sh* that using */bin/mount* to mount
> device.
>
> But systemd-udevd detaches *mount()* operations done within the service
>
> from the rest of the system with MountFlag=slave, this means host can
>
> not access device. (e.g. Executing *mkfs.ext4 /dev/sda1/* prompts
>
> */dev/sda1 is apparently in use by the system; will not make a filesystem
> here!*)
>
>
> Solution:
>
> Systemd upstream suggest that the best way is to use "systemd-mount"
>
> in udev rules, which will request the mount operation to be executed by
> PID 1.
>
> And I have tested it was effective.
>
>
> Uncertain:
>
> The exiting method is designed for *SysV-init *which is not
> compatible to
>
> systemd-udev, at least that's what I think. So I think that we should
> design
>
> a new rule or organizational structure to be suitable for systemd-udev and
>
> to mount deferent device. Dose anyone help do this? Or I can make some
>
> improvements on the basis of the existing with "systemd-mount".
>
>
>
>
> --
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-03-02 13:51 UTC | newest]
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-- links below jump to the message on this page --
2018-03-01 10:35 Questions about udev rule and systemd-udev,relevant to mounting block device Hongzhi, Song
2018-03-02 5:44 ` [OE-core] " Hongzhi, Song
2018-03-02 5:44 ` Hongzhi, Song
2018-03-02 13:50 ` [OE-core] " Vincent Prince
2018-03-02 13:50 ` Vincent Prince
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