dracut script is stuck at sync command , cannot generate initramfs or update.

Solution Verified - Updated -

Issue

  • Dracut command does not proceed further.
  • yum update kernel or dracut command hangs indefinitely
0     0 104768  92955  20   0   4364   356 wait_o D+   pts/0      0:00 sync /boot/initramfs-3.10.0-1127.10.1.el7.x86_64.img

Environment

  • Red Hat Enterprise Linux 7
  • sync
  • seen on dracut-033-568.el7 and above.

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