Tag Archives: version

Verify Schema versions on all Domain Controllers

Usually we can use below batch file to check domain controller schema version.


REM Change the line below. Example: SET domain=dc=mydomain,dc=com

SET domain=dc=exampledomain,dc=com

ECHO Finding Schema Level on Domain Controllers in domain %domain%..

SET file=schemainput.txt
dsquery server -o rdn > %file%
FOR /f %%a IN (%file%) DO CALL :Loop %%a
REM Cleaning up the temporary file.
IF EXIST %file% DEL %file%
GOTO :eof

SET dc=%1
ECHO %dc%
dsquery * cn=schema,cn=configuration,%domain% -scope base -attr objectversion -s %dc%|FIND /i /v "objectversion"
GOTO :eof

Another very quick way to check this with only one command line is using the repadmin tool:

repadmin /showattr * “cn=schema,cn=configuration,dc=yourdomain,dc=com” /atts:ObjectVersio


forget to update the bootloader when updating ZFS filesystems.

Today, when I reboot my freebsd server. Server can’t boot. The error message is

ZFS: unsupported ZFS version 5000 (should be 28)
can't find /boot/zfsloader

default: ssd::/boot/kernel/kernel

can't find /boot/zfsloader

The problem is caused by that after I update zfs version, I should update bootloader at the same time.

Fix it:

Download the latest Freebsd 9.1 current image. Note:if you are using the stable image, the bootloader in the image is still old and can’t support zfs 29.

Then use the image to boot the server, then enter ‘shell’,run below command for all boot disks:

#gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 mfid0

then reboot the server