turn off bad block relocation

[kholikt]

Hi,

I need to turn off bad block relocation. Can I do it online (non disruptive)

lvchange -r N /dev//

[Camel_1]

yes, you can do it online.

[gigiz]

this is the test for you on my testserver:

bdf /pluto
Filesystem kbytes used avail %used Mounted on
/dev/vg00/prova 133120 126331 6405 95% /pluto
lvchange -r N /dev/vg00/prova
Logical volume "/dev/vg00/prova" has been successfully changed.
Volume Group configuration for /dev/vg00 has been saved in /etc/lvmconf/vg00.conf

Yes you can without problem ....

[Rita C Workman]

Yes you can do this live.

But please re-consider.

First, you turn BBR off because your disk (vendor) wants to control the Bad Block Re-allocation. And it should.
But it should do it from the get-go.
You may have not run into any issues doing this live, BUT....be aware that if a bad block reallocation has occured, and you turn this off (especially with things up), you won't realize it until system/box goes down and then the application tries to come back up. It won't know where any reallocated data is anymore.

You might consider ensuring you have a solid backup. Turn things down, then turn off BBR, as it should have been, then come backup and check things solidly.

Just my penny's worth of caution,
Rgrds,
Rita

[Doug O'Leary]

Hey;

One more data point: According to the man page for lvchange on 11.23, bad block relocation is obsolte - it's only there to provided backward compatibility.

So, if you're using 11.23, you can set it or not - it won't matter because it doesn't do anything.

Doug