Only warning and error logs on azuredisk driver

[andyzhangx]

What happened:
I set as --v=5, while there are only warning and error logs on azuredisk driver, no info logs

azuredisk-csi-driver/deploy/azuredisk-csi-driver.yaml

Line 58 in 6107cfc

- "--v=5"

What you expected to happen:

Only following logs are displayed even I set --v=15 for azure disk driver:

0326 07:45:09.704510       1 azuredisk.go:71] Driver: disk.csi.azure.com
I0326 07:45:09.705418       1 azuredisk.go:72] Version: v0.2.0-alpha
I0326 07:45:09.706176       1 driver.go:80] Enabling controller service capability: CREATE_DELETE_VOLUME
I0326 07:45:09.706193       1 driver.go:80] Enabling controller service capability: PUBLISH_UNPUBLISH_VOLUME
I0326 07:45:09.706199       1 driver.go:99] Enabling volume access mode: SINGLE_NODE_WRITER
I0326 07:45:09.706468       1 server.go:103] Listening for connections on address: &net.UnixAddr{Name:"//csi/csi.sock", Net:"unix"}
I0326 07:46:35.717008       1 mount_linux.go:454] `fsck` error fsck from util-linux 2.29.2
fsck.ext2: Bad magic number in super-block while trying to open /devhost/sdc
/devhost/sdc:
The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>
 or
    e2fsck -b 32768 <device>

E0326 07:46:35.724214       1 mount_linux.go:152] Mount failed: exit status 32
Mounting command: mount
Mounting arguments: -t ext4 -o defaults /devhost/disk/azure/scsi1/lun0 /var/lib/kubelet/plugins/kubernetes.io/csi/pv/pvc-248e53b6-4f9b-11e9-bf94-000d3a04b60e/globalmount
Output: mount: wrong fs type, bad option, bad superblock on /devhost/sdc,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

I0326 07:46:35.735539       1 mount_linux.go:489] Disk "/devhost/disk/azure/scsi1/lun0" appears to be unformatted, attempting to format as type: "ext4" with options: [-F -m0 /devhost/disk/azure/scsi1/lun0]
I0326 07:46:36.963869       1 mount_linux.go:493] Disk successfully formatted (mkfs): ext4 - /devhost/disk/azure/scsi1/lun0 /var/lib/kubelet/plugins/kubernetes.io/csi/pv/pvc-248e53b6-4f9b-11e9-bf94-000d3a04b60e/globalmount

How to reproduce it:

Anything else we need to know?:

Environment:

• CSI Driver version: v0.2.0-alpha
• Kubernetes version (use kubectl version): 1.14.0
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[andyzhangx]

cc @ashishranjan738
It looks like this PR: #48 caused this issue, logs like following logs won't be displayed in csi driver container any more.

azuredisk-csi-driver/pkg/azuredisk/controllerserver.go

Line 165 in 6107cfc

klog.V(2).Infof("begin to create azure disk(%s) account type(%s) rg(%s) location(%s) size(%d)", diskName, skuName, resourceGroup, location, requestGiB)

if I switch to use glog, then it works well, e.g.

git checkout 01a54cea9f44edfdea1d15dd2b72bf6671527e5e
make

[andyzhangx]

could be due to missing klog.InitFlags(nil) in main func, not sure, will try tomorrow.

[ashishranjan738]

will have a look as well

[ashishranjan738]

verified with the upstream image facing the same issue, but not able to reproduce it in the local system. Raised a quick fix #69

[ashishranjan738]

could be due to missing klog.InitFlags(nil) in main func, not sure, will try tomorrow.

klog.init is present in main.go