On 26.10.09 14:25, Stathis Kamperis wrote:
Greetings to everyone.I'm trying to retrieve the checksumming algorithm on a per-block basis with zdb(1M). I know it's supposed to be ran by Sun's support engineers only & I take full responsibility for whatever damage I cause to my machine by using it. Now. I created a tank/test filesystem, dd'ed some files, then changed the checksum to sha256 and dd'ed some more files. I retrieved the DVAs of all the files and wanted to verify that some of them are using the default and the rest the sha256 checksums. The problem is that zdb -R either returns (null), meaning that printf() has been given a NULL pointer or it returns corrupt data and there are cases where it works ok. This is a case where it fails: $ zdb -R tank:0:f076d8600:7a00:b Found vdev type: mirror DVA[0]: vdev_id 1199448952 / 4315c6bdf768bc00 DVA[0]: GANG: TRUE GRID: 00bd ASIZE: eb45ac00 DVA[0]: :1199448952:4315c6bdf768bc00:a75a00:egd DVA[1]: vdev_id 1938508981 / e19c60208f39cc00 DVA[1]: GANG: TRUE GRID: 005d ASIZE: 11fe4ac00 DVA[1]: :1938508981:e19c60208f39cc00:a75a00:egd DVA[2]: vdev_id 1231513852 / 646586e9b6609400 DVA[2]: GANG: FALSE GRID: 00e6 ASIZE: 15e953200 DVA[2]: :1231513852:646586e9b6609400:a75a00:edd LSIZE: 6efc00 PSIZE: a75a00 ENDIAN: BIG TYPE: (null) BIRTH: 2a9513965f18afd LEVEL: 24 FILL: 85adfa322e48a796 CKFUNC: (null) COMP: (null) CKSUM: 7408c0516468b934:a0f29a7c28b6c319:28280aab19d1ad3c:64607350c7ea256c $ Is it a zdb deficiency of my input is to blame? Thank you for considering.
I guess -S option can help you to get what you are looking for. Victor _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
