Well, I've written a simple utility which TRIMs empty space on MD RAID-1 devices, ext4/3 on RAID-1 are supported. My script was inspired by raid1ext4trim.sh-1.4 script in hdparm, but my script also supports TRIM on arbitrary partitioned devices. Since it calls TRIM on raw devices there is a possibility of really bad data corruption bugs. So there's test/test.sh script which try to test mdtrim by creating MD array on a single SSD drive, filling it up with random data and then TRIMing empty space. So far, it works for me but it would be great to have more test results. You can get it here: https://github.com/Cyberax/mdtrim -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
