Hi all!

I have some troubles using the above IOCtl in Warp 4.

It's a system with 5 SCSI disks:
- 0: 200MB C: OS/2 System
- 1: 150MB empty
- 2: 150MB empty
- 3: 150MB empty
- 4: 520MB empty

Trying to lock the first disk gives error 33, this is expected.  Locking
disk 1 and 2 give no error.  But when I try to lock disk 3 or 4 the floppy
disk starts spinning and I get error 21 or 33 depending whether a disk is
inserted or not.
Removing a 150MB disk gives the same results, updating to FP#6, too.

I have no idea why the floppy disk is access at all, especially as I check
the drive parameters before locking (via PDSK_GETPHYSDEVICEPARAMS) and they
look OK.

Has anyone tried to use PDSK_LOCKPHYSDRIVE on a comparable system?  I want
to lock a disk before I create RAID partitions on it so my code should work
in a 20 disk system...

C-x C-s
    Vitus

 


The below code has been developed on a Warp 3 FP#32 System which had a
2100MB disk and the three 150MB and worked OK.  (you may request a simple
surface check program including the source as magic PDSK)

===============================================
PUBLIC APIRET
PDskOpen(ULONG idx,PULONG handle)
{
    APIRET	rc;
    char	str[20];
    PDEVTAB	dt = Allocate();

    sprintf(str, "%lu:", idx+1);
    rc = DosPhysicalDisk(INFO_GETIOCTLHANDLE,
			 &dt->hd, sizeof(dt->hd),
			 str, strlen(str)+1);
    if( rc == 0 )
    {
	UCHAR	ucParm = 0;
	ULONG	ulParmLen = sizeof(ucParm);
	ULONG	ulDataLen = sizeof(dt->layout);

	rc = DosDevIOCtl(dt->hd, IOCTL_PHYSICALDISK, PDSK_GETPHYSDEVICEPARAMS,
			 &ucParm, ulParmLen, &ulParmLen,
			 &dt->layout, ulDataLen, &ulDataLen);
...
	*handle = (ULONG)dt;
    }
    return rc;
}
PUBLIC APIRET
PDskLock(ULONG handle)
{
    PDEVTAB	dt = (PDEVTAB)handle;
    UCHAR	ucParm = 0;
    ULONG	ulParmLen = sizeof(ucParm);
    UCHAR	aucData[31];
    ULONG	ulDataLen = sizeof(aucData);

    memset(aucData, 0, sizeof(aucData));
    return DosDevIOCtl(dt->hd, IOCTL_PHYSICALDISK, PDSK_LOCKPHYSDRIVE,
		       &ucParm, ulParmLen, &ulParmLen,
		       aucData, ulDataLen, &ulDataLen);
}
=================================================


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