Greg Freemyer wrote:
What filesystems does your script support? Running a tool like this in the middle of the night makes a lot of since to me even from the perspective of many / most enterprise users.
.. It is designed to work on any *mounted* filesystem that supports the fallocate() system call. It uses fallocate() to reserve the free space in a temporary file without any I/O, and then FIEMAP/FIBMAP to get the block lists from the fallocated file, and then SGIO/ATA_16:TRIM to discard the space, before deleting the fallocated file. Tested by me on ext4 and xfs. btrfs has a bug that prevents the fallocate from succeeding at present, but CM say's they're trying to fix that. It will also work on *unmounted" ext2/ext3/ext4 filesystems, using dumpe2fs to get the free lists, and on xfs using xfs_db there. HFS(+) support is coming as well. Not currently compatible with LVM 1/2, or with some distros that use imaginary device names in /proc/mounts --> I'm working on those issues.
ps: I tried to pull wiper.sh straight from sourceforge, but I'm getting some crazy page asking all sorts of questions and not letting me bypass it. I hope sourceforge is broken. The other option is they meant to do this. :(
.. That's weird. It should just be a simple click/download, though you will need to also upgrade hdparm to the latest version. Cheers -- 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
