我在imx8（NXP CPU）上运行linux，第1个进程是systemd，登录系统后，执行“systemctl list-jobs”显示一些作业状态正在等待。
JOB UNIT TYPE STATE
241 dev-disk-by\x2did-mmc\x2d88A378_0x11afd0a0\x2dpart4.device nop waiting
216 sys-devices-platform…0-mmc0:0001-block-mmcblk0-mmcblk0p1.device nop waiting
244 sys-devices-platform…0-mmc0:0001-block-mmcblk0-mmcblk0p4.device nop waiting
215 dev-mmcblk0p1.device nop waiting
219 dev-disk-by\x2did-mmc\x2d88A378_0x11afd0a0\x2dpart2.device nop waiting
218 dev-disk-by\x2dpartuuid-ab685616\x2d02.device nop waiting
211 dev-disk-by\x2dlabel-Boot\x5cx20imx8mq.device nop waiting
236 dev-disk-by\x2did-mmc\x2d88A378_0x11afd0a0.device nop waiting
235 dev-disk-by\x2dpath-platform\x2d30b40000.mmc.device nop waiting
213 dev-disk-by\x2duuid-5438\x2d0EB3.device nop waiting
240 dev-disk-by\x2duuid-…300\x2d4678\x2db9d4\x2dbe73d205eae9.device nop waiting
212 dev-disk-by\x2did-mmc\x2d88A378_0x11afd0a0\x2dpart1.device nop waiting
221 sys-devices-platform…0-mmc0:0001-block-mmcblk0-mmcblk0p2.device nop waiting
243 dev-mmcblk0p4.device nop waiting
237 dev-mmcblk0.device nop waiting
214 dev-disk-by\x2dpartuuid-ab685616\x2d01.device nop waiting
220 dev-mmcblk0p2.device nop waiting
239 dev-disk-by\x2dpath-platform\x2d30b40000.mmc\x2dpart4.device nop waiting
242 dev-disk-by\x2dpartuuid-ab685616\x2d04.device nop waiting
238 sys-devices-platform…c_host-mmc0-mmc0:0001-block-mmcblk0.device nop waiting
217 dev-disk-by\x2dpath-platform\x2d30b40000.mmc\x2dpart2.device nop waiting
210 dev-disk-by\x2dpath-platform\x2d30b40000.mmc\x2dpart1.device nop waiting
22 jobs listed.
此信息似乎与系统分区相关
root@imx8mqevk:/lib/systemd/system# lsblk --fs
NAME FSTYPE LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
mmcblk0
├─mmcblk0p1 vfat Boot imx8mq 5438-0EB3
├─mmcblk0p2 ext4 bfc7ccd6-d303-44c5-9466-e6114742d3c7
├─mmcblk0p3 ext4 bfc7ccd6-d303-44c5-9466-e6114742d3c7 1.3G 45% /
└─mmcblk0p4 ext4 c28cc558-0300-4678-b9d4-be73d205eae9 817M 5% /media/usr
mmcblk0boot0
mmcblk0boot1
nvme0n1
└─nvme0n1p1 ext4 eecda9f6-3317-4762-ab05-36b345f19309 413.4G 1% /mnt
root@imx8mqevk:/lib/systemd/system#
比较特别的一点是我使用了两次挂载来挂载分区和绑定文件夹。一个是media-usr.mount
[Unit]
Description = mount mmcblk0p4
DefaultDependencies=no
[Mount]
What = /dev/mmcblk0p4
Where = /media/usr
Type = ext4
Options = defaults
[Install]
WantedBy=local-fs.target
另一个是etc.mount
[Unit]
Description = bind etc dir
DefaultDependencies=no
After=media-usr.mount
[Mount]
What = /media/usr/etc
Where = /etc
Type = none
Options = bind
[Install]
WantedBy=local-fs.target
有时系统启动成功，执行“systemd-analyzeplot>boot.svg”，内容如下
这个问题的原因是什么以及如何解决它