SCSI READ CAPACITY reports the address of the last block and the block size. The total number of blocks is thus last block address plus one.
--- This patch fixes the disk size reported by scsi. Up until now, the reported disk size is too small by one sector. Read/Write operations on other sectors have not been affected. Trying to partition scsi backed storage via ums has resulted in "storage too small" errors. doc: https://linux.die.net/man/8/sg_readcap Signed-off-by: Julius Lehmann <lehma...@devpi.de> --- drivers/scsi/scsi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 51cacf3479236be6c6ea3e7d15b87e03f10e7f3a..bcdeda95ed1514119057cc67974fec465cf5672c 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -309,6 +309,7 @@ static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb, ((unsigned long)pccb->pdata[5] << 16) | ((unsigned long)pccb->pdata[6] << 8) | ((unsigned long)pccb->pdata[7]); + *capacity += 1; return 0; } @@ -332,6 +333,7 @@ static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb, ((uint64_t)pccb->pdata[5] << 16) | ((uint64_t)pccb->pdata[6] << 8) | ((uint64_t)pccb->pdata[7]); + *capacity += 1; *blksz = ((uint64_t)pccb->pdata[8] << 56) | ((uint64_t)pccb->pdata[9] << 48) | --- base-commit: 29e5dbc55c64c6450f066c55a5bc48bd1717aa1b change-id: 20241014-fix-scsi-disksize-d73a017cadf4 Best regards, -- Julius Lehmann <lehma...@devpi.de>
