I am running tail on a text file in a Centos 7 Docker on top of CoreOS. I see this message whenever I tail this file:
tail: unrecognized file system type 0x794c7630 for \u2018sda_written_locally.txt\u2019. please report this to bug-coreutils@gnu.org. reverting to polling Let me know if there is other specific information you need. Thanks, Marshall [root@cycvirtual-qemu-a ~]# tail -f sda_written_locally.txt 7eee803c-11a2-43c7-8133-e5206d30a7c7 a38ada72-138b-425f-8854-4db2fd29cecb 10fd3de7-b3f5-4878-9f03-dbf9a09455aa 9f046505-2f1f-466c-b2fa-eb98da147fe5 049876dd-5050-4a8d-b148-c891549b025c db5a30eb-eea0-4390-8752-32318b03d8fb 94185150-ec8d-49a2-a1a8-3d1c938a6076 73a1f734-2c3a-403e-9420-312d2ff2644b 8ab1ff27-47d1-41a9-892a-bb1b2e6f0330 2cea0d97-f121-4753-8aee-bd9aab915cf6 tail: unrecognized file system type 0x794c7630 for \u2018sda_written_locally.txt\u2019. please report this to bug-coreutils@gnu.org. reverting to polling ^C [root@cycvirtual-qemu-a ~]# [root@cycvirtual-qemu-a ~]# df -h Filesystem Size Used Avail Use% Mounted on overlay 25G 1.3G 23G 6% / devtmpfs 2.1G 0 2.1G 0% /dev shm 64M 0 64M 0% /dev/shm tmpfs 2.2G 0 2.2G 0% /sys/fs/cgroup tmpfs 2.2G 568K 2.2G 1% /run.host tmpfs 434M 0 434M 0% /run.host/user/500 /dev/vda3 2.0G 1.1G 759M 60% /usr/lib/modules /dev/vda9 25G 1.3G 23G 6% /etc/hosts /dev/sda 9.8G 495M 9.3G 5% /shared/sda [root@cycvirtual-qemu-a ~]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Tue Dec 15 15:48:59 2015 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # UUID=f10578db-8e25-47ee-a0dd-696d87e1d39d / ext4 defaults 1 1 [root@cycvirtual-qemu-a ~]# [root@cycvirtual-qemu-a ~]# file sda_written_locally.txt sda_written_locally.txt: ASCII text