Re: ext3-2.4-0.9.6

Stephen C. Tweedie
2001-08-13T18:10:27Z

Hi,

On Sun, Aug 12, 2001 at 04:38:41AM +0200, Ralf Baechle wrote:
> On Sat, Aug 11, 2001 at 06:40:22PM -0700, Andrew Morton wrote:
>
> > - ext3 has for a long time had developer code which allows the target device
> > to be turned read-only at the disk device driver level a certain number
> > of jiffies after the fs was mounted. This is to allow scripted testing
> > of crash recovery. This facility has been extended to support two devices;
> > one for the filesystem and one for the external journal device.
>
> Would this facility also be able to deal with parts of a device becoming
> read-only unexpectedly? Some of the disks I have in RAIDs have the
> nice habit of disabling write access when overheating. That's an
> interesting failure scenario in a RAID system.

No, that particular part of the ext3 patch is only there for testing
--- it forces a single device readonly to simulate a crash. It adds
no ability to deal cleanly with a device unexpectedly going readonly
on its own.

Cheers,
Stephen