*test case:*
# systemctl restart systemd-udevd
# systemctl status systemd-udevd
# dd if=/dev/zero of=./blk-file bs=1M count=200
# losetup -f
# losetup /dev/loop0 ./blk-file
# losetup -f
# parted -s /dev/loop0 mklabel MSDOS
Error: Partition(s) 1, ..., 64 on /dev/loop0 have been written, but we have
been unable to inform the kernel of the change, probably because it/they
are in use. As a result, the old partition(s) will remain in use. You
should reboot now before making further changes.
# echo $?
1
*root case:*
linux kernel update:
Upstream commit 1a721de8489fa559ff4471f73c58bb74ac5580d3
+ if (disk->flags & GENHD_FL_NO_PART)
+ return -EINVAL;
parted: libparted/arch/linux.c
3075 static int _disk_sync_part_table (PedDisk* disk)
3077 {
...
3165 if (!ok[i - 1] && errnums[i - 1] == ENXIO)
3166 ok[i - 1] = 1; /* it already doesn't exist */
3167 }
*thought:*
parted codes need refresh according to kernel of return value.
