I am running ZFS filesystem version 4 and storage pool version 15 on a FreeBSD 8.2-Release-amd64 kernel. I have a single 12TB pool based on a 3ware 9650 controller with 8 seagate ST2000DL003 drives in a raid-5 configuration managed by the controller.
I recently had a connector problem on a disk in the array while running a performance test that was writing a 1TB pattern file to the array. When the raid controller started reporting errors I stopped the test and re-seated the connector on the drive. After running a verify on the raid, I tried to read the partial pattern file and ZFS produced copious amounts of checksum error messages on the system console. So, I rm'ed the file, and got even more checksum errors interspersed with several I/O error 86 messages. Since the rm, ls no longer shows the file, but I did a scrub just to be sure the bogus file was gone, and got tons of checksum and i/o 86 errors. At the end, zpool status shows: phoenix# zpool status -v zfsPool pool: zfsPool state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scrub: scrub completed after 3h40m with 6353 errors on Fri Jun 22 08:36:36 2012 config: NAME STATE READ WRITE CKSUM zfsPool ONLINE 0 0 6.20K da0 ONLINE 0 0 12.4K errors: Permanent errors have been detected in the following files: zfsPool/raid:<0x9e241> I have tried "zpool clear"/reboot/"zpool scrub" several times now, and get a similar set of errors and results. My question is - How do I get rid of this file? It is no longer linked to a directory entry, and there shouldn't be anybody with it open since I have rebooted several times. yet, zfs still tells me there's a broken file and I should replace it. It is most likely the pattern test file that I deleted, so I don't need it and I don't want to recover it. i would just like to get rid of it and get my filesystem clean again without resorting to starting over. thanks, ron.
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