2016年1月23日星期六

force update windows time with batch file

Create the batch files in startup as below:

@ping time.windows.com -n 1 -w 36000 > nul
w32tm /config /manualpeerlist:"time.windows.com" /syncfromflags:manual /reliable:yes /update
W32tm /resync /force


-------------------------------------
It will try to check time.windows.com(or ntp you want) and your network is up and running then force to update the windows time with time.windows.com.

2016年1月18日星期一

Failed Raid 1 device & wants to readd again(assume the harddisk is status normal)

Raid Status but make sure both harddisk are normal and without bad sector.

[root@server ~]# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda2[0] sdb2[2](F)
      156183808 blocks [2/1] [U_]

md1 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

unused devices:

************************************************
if you want to fail the device by command, use this
[root@server ~]#  mdadm /dev/md2 --fail /dev/sdb2
************************************************

* User command to remove the failed device.

[root@server ~]#  mdadm /dev/md2 --remove /dev/sdb2


[root@server ~]# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda2[0]
      156183808 blocks [2/1] [U_]

md1 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

unused devices:

[root@server ~]# mdadm /dev/md2 --add /dev/sdb2
mdadm: hot added /dev/sdb2
[root@server ~]# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sdb2[2] sda2[0]
      156183808 blocks [2/1] [U_]
      [>....................]  recovery =  0.1% (185024/156183808) finish=28.0min speed=92512K/sec
md1 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

unused devices: