Unable to create docker volume for VFAT file system type

[shivanshu21]

Environment Details: (
#VMs = 2
ESX = 6.0u2
Datastore = vsan
Application = None

Steps to Reproduce:

1. Try creating a volume with file system type VFAT

Expected result: Should succeed

Actual Result:

We see that VFAT is listed as supported.

user@ubuntu14A ~: docker volume create --driver=vsphere --name=MyVolume -o size=10gb -o fstype=ntfs
Error response from daemon: create MyVolume: VolumeDriver.Create: Not found mkfs for ntfs
Supported filesystems found: ext2, ext3, ext4, ext4dev, vfat, xfs

But volume creation fails. The params required are different.

user@ubuntu14A ~: docker volume create --driver=vsphere --name=MyVolume -o size=10mb -o fstype=vfat
Error response from daemon: create MyVolume: VolumeDriver.Create: Failed to create filesystem on /dev/disk/by-path/pci-0000:0b:00.0-scsi-0:0:0:0: exit status 1. Output = /sbin/mkfs.vfat: unrecognized option: L
BusyBox v1.25.1 (2016-10-26 16:15:20 GMT) multi-call binary.

Usage: mkfs.vfat [-v] [-n LABEL] BLOCKDEV [KBYTES]

Make a FAT32 filesystem

    -v      Verbose
    -n LBL  Volume label

All retries failed too:

user@ubuntu14A ~: docker volume create --driver=vsphere --name=MyVolume -o size=10mb -o fstype=vfat
Error response from daemon: create MyVolume: VolumeDriver.Create: Failed to create filesystem on /dev/disk/by-path/pci-0000:0b:00.0-scsi-0:0:0:0: exit status 1. Output = /sbin/mkfs.vfat: unrecognized option: L
BusyBox v1.25.1 (2016-10-26 16:15:20 GMT) multi-call binary.

Usage: mkfs.vfat [-v] [-n LABEL] BLOCKDEV [KBYTES]

Make a FAT32 filesystem

    -v      Verbose
    -n LBL  Volume label

user@ubuntu14A ~:
user@ubuntu14A ~:
user@ubuntu14A ~: docker volume create --driver=vsphere --name=MyVolume -o size=10mb -o fstype=vfat
Error response from daemon: create MyVolume: VolumeDriver.Create: Failed to create filesystem on /dev/disk/by-path/pci-0000:0b:00.0-scsi-0:0:0:0: exit status 1. Output = /sbin/mkfs.vfat: unrecognized option: L
BusyBox v1.25.1 (2016-10-26 16:15:20 GMT) multi-call binary.

Usage: mkfs.vfat [-v] [-n LABEL] BLOCKDEV [KBYTES]

Make a FAT32 filesystem

    -v      Verbose
    -n LBL  Volume label

user@ubuntu14A ~:

[shivanshu21]

Not sure if this is relevant too but creating volumes of same name is also not failing with error message so long as you change the FS type.

user@ubuntu14A ~: docker volume create --driver=vsphere --name=vol1 -o size=10mb -o fstype=ext2
vol1
user@ubuntu14A ~: docker volume create --driver=vsphere --name=vol1 -o size=10mb -o fstype=ext3
vol1
user@ubuntu14A ~: docker volume create --driver=vsphere --name=vol1 -o size=10mb -o fstype=ext4
vol1
user@ubuntu14A ~: docker volume inspect vol1
[
{
"Driver": "vsphere:latest",
"Labels": {},
"Mountpoint": "/mnt/vmdk/vol1",
"Name": "vol1",
"Options": {
"fstype": "ext2",
"size": "10mb"
},
"Scope": "global",
"Status": {
"access": "read-write",
"attach-as": "independent_persistent",
"capacity": {
"allocated": "3MB",
"size": "10MB"
},
"clone-from": "None",
"created": "Thu Jun 1 10:46:21 2017",
"created by VM": "Ubuntu14_A",
"datastore": "datastore1",
"diskformat": "thin",
"fstype": "ext2",
"status": "detached"
}
}
]
user@ubuntu14A ~: docker volume ls
DRIVER VOLUME NAME
local something
vsphere:latest vol1@datastore1
user@ubuntu14A ~:

[tusharnt]

@ashahi1 to just document this issue as one of the known issues.

[ashahi1]

Closing through #1616