Date: Tue, 23 Nov 2004 23:32:33 +0100 From: Dimitry Andric <dimitry@andric.com> To: "Daniel Eriksson" <daniel_k_eriksson@telia.com> Cc: =?ISO-8859-1?Q?'S=F8ren_Schmidt'?= <sos@DeepCore.dk> Subject: Re: ataraid and 1TB+ storage? Message-ID: <776228597.20041123233233@andric.com> In-Reply-To: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAArGzvK%2B4YM06UU9SHnH5gFAEAAAAA@telia.com> References: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAArGzvK%2B4YM06UU9SHnH5gFAEAAAAA@telia.com>
next in thread | previous in thread | raw e-mail | index | archive | help
------------6817D104BDB1059 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable On 2004-11-23 at 22:43:41 Daniel Eriksson wrote: > ad4: 190782MB <ST3200822A/3.01> [387621/16/63] at ata2-master UDMA100 > ad5: 190782MB <ST3200822A/3.01> [387621/16/63] at ata2-slave UDMA100 > ad6: 190782MB <ST3200822A/3.01> [387621/16/63] at ata3-master UDMA100 > ad7: 190782MB <ST3200822A/3.01> [387621/16/63] at ata3-slave UDMA100 > ad8: 190782MB <ST3200822A/3.01> [387621/16/63] at ata4-master UDMA100 > ad9: 190782MB <ST3200822A/3.01> [387621/16/63] at ata4-slave UDMA100 [...] > ar0: 9007199253788533MB <ATA RAID0 array> [1499975777/255/63] status: REA= DY This looks like a wraparound over 2^31 sectors, so the sector count gets negative. And then this is interpreted as a 64-bit unsigned: (2^64 - (6*387621*16*63 - 2^31)) / 2 / 1024 =3D 9007199254644874 MB Not exactly, but close enough to the reported 9007199253788533 MB, I would think... If anyone can explain the difference, please let us know. (I'm guessing that the LBA capacity of the individual drives is a bit different from the 387621/16/63 geometry they're reporting.) Anyway, this is probably some bug in the ataraid driver. :) ------------6817D104BDB1059 Content-Type: application/pgp-signature -----BEGIN PGP MESSAGE----- Version: GnuPG v1.2.5 (MingW32) iD8DBQFBo7qBsF6jCi4glqMRAjzKAJ0TdjJ/SJLyitxHjOZ9eDK9rTpnmgCeJx+L g7Lh4lpFBVStF9kYT23xt3c= =8zYA -----END PGP MESSAGE----- ------------6817D104BDB1059--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?776228597.20041123233233>