Hi, while not providing complete solution, I'd suggest turning atime off so find/rm does not change access time and possibly destroying unnecessary snapshots before removing files, should be quicker.
Yours Markus Kovero -----Original Message----- From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-boun...@opensolaris.org] On Behalf Of Mikko Lammi Sent: 5. tammikuuta 2010 12:35 To: zfs-discuss@opensolaris.org Subject: [zfs-discuss] Clearing a directory with more than 60 million files Hello, As a result of one badly designed application running loose for some time, we now seem to have over 60 million files in one directory. Good thing about ZFS is that it allows it without any issues. Unfortunatelly now that we need to get rid of them (because they eat 80% of disk space) it seems to be quite challenging. Traditional approaches like "find ./ -exec rm {} \;" seem to take forever - after running several days, the directory size still says the same. The only way how I've been able to remove something has been by giving "rm -rf" to problematic directory from parent level. Running this command shows directory size decreasing by 10,000 files/hour, but this would still mean close to ten months (over 250 days) to delete everything! I also tried to use "unlink" command to directory as a root, as a user who created the directory, by changing directory's owner to root and so forth, but all attempts gave "Not owner" error. Any commands like "ls -f" or "find" will run for hours (or days) without actually listing anything from the directory, so I'm beginning to suspect that maybe the directory's data structure is somewhat damaged. Is there some diagnostics that I can run with e.g "zdb" to investigate and hopefully fix for a single directory within zfs dataset? To make things even more difficult, this directory is located in rootfs, so dropping the zfs filesystem would basically mean reinstalling the entire system, which is something that we really wouldn't wish to go. OS is Solaris 10, zpool version is 10 (rather old, I know, but is there easy path for upgrade that might solve this problem?) and the zpool consists two 146 GB SAS drivers in a mirror setup. Any help would be appreciated. Thanks, Mikko -- Mikko Lammi | l...@lmmz.net | http://www.lmmz.net _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
