On Fri, Nov 20, 2009 at 09:45:21PM -0500, Martin K. Petersen wrote: > The discard ioctl is used by mkfs utilities to clear a block device > prior to putting metadata down. However, not all devices return zeroed > blocks after a discard. Some drives return stale data, potentially > containing old superblocks. It is therefore important to know whether > discarded blocks are properly zeroed. At least for mkfs.xfs we make sure to still zero the important areas after the TRIM ioctl anyway. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
