Re: DVD-RAM media detected with wrong number of blocks (2.4.7)

[Jens Axboe]

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On Mon, Jul 23 2001, David Johnson wrote:
> When attempting to create an ext2 partition on a dvd-ram (2.6G/5.2G) 
> media the number of blocks is detected wrong causing only half of the 
> disk to be usable.  When creating the filesystem with mke2fs only 
> 609480 2K blocks are allowed instead of 1218960 2K blocks, and I end 
> up with a 1.2GB partition instead of 2.4GB one.  The 1.2GB fs works 
> fine, it's just a bit small :(
> 
> This is with 2.4.7 using a Creative DVD-RAM drive (1216S) on an Adaptec 
> 2940UW.
> 
> The correct number of blocks is detected in 2.4.6

Does this work?

-- 
Jens Axboe

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--- drivers/scsi/sr_ioctl.c~	Tue Jul 24 10:24:46 2001
+++ drivers/scsi/sr_ioctl.c	Tue Jul 24 10:24:59 2001
@@ -545,7 +545,7 @@
 
 	switch (cmd) {
 	case BLKGETSIZE:
-		return put_user(scsi_CDs[target].capacity >> 1, (long *) arg);
+		return put_user(scsi_CDs[target].capacity >> 2, (long *) arg);
 	case BLKROSET:
 	case BLKROGET:
 	case BLKRASET:

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