is it possible to remove/disable virtual unit (device units)?
I am able to reduce boot time by commenting rules in 60-persistent-storage.rules such as by-path, by-id,by-label, is this change may have an impact?
Thanks,
Mohamed Ali
Le dim. 28 juin 2020 10:22, Mantas Mikulėnas <grawity@xxxxxxxxx> a écrit :
On Sat, Jun 27, 2020 at 11:30 PM Mohamed Ali Fodha <fodha.mohamed.ali@xxxxxxxxx> wrote:Hello,I noticed that mounting partition takes more time on yocto thud regarding rocko.I checked the dev-mmcblk0p2.device in my case using systemd-bootchart.Is there any reason why this mouting delay was increased?Either the kernel takes longer to *detect* the device in the first place (maybe partition scanning became slower?), or you have added udev rules which take a long time to be processed. There is no hardcoded mounting delay within systemd itself.Where the dev-mmcblk0p2.device comes from? I am not able to locate it in /lib/systemd/system, any help on this please?.device units are virtual units which represent the state of udev database. The unit shows up whenever the kernel informs udev about a new device, but it only gets marked as "active (plugged)" when udev's rule processing for that device finishes.--Mantas Mikulėnas
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