From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Subject: Re: [Bug 13143] New: scsi_debug doesn't manage more than 1Tb Date: Wed, 22 Apr 2009 22:35:47 -0400 Message-ID: <49EFD403.9080206@interlog.com> References: <20090423094200T.fujita.tomonori@lab.ntt.co.jp> Reply-To: dgilbert@interlog.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.infotech.no ([82.134.31.41]:33343 "EHLO elrond2.infotech.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752254AbZDWCfx (ORCPT ); Wed, 22 Apr 2009 22:35:53 -0400 In-Reply-To: <20090423094200T.fujita.tomonori@lab.ntt.co.jp> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: FUJITA Tomonori Cc: bugzilla-daemon@bugzilla.kernel.org, linux-scsi@vger.kernel.org FUJITA Tomonori wrote: > On Tue, 21 Apr 2009 16:07:08 GMT > bugzilla-daemon@bugzilla.kernel.org wrote: > >> http://bugzilla.kernel.org/show_bug.cgi?id=13143 >> >> Summary: scsi_debug doesn't manage more than 1Tb >> Product: SCSI Drivers >> Version: 2.5 >> Platform: All >> OS/Version: Linux >> Tree: Mainline >> Status: NEW >> Severity: normal >> Priority: P1 >> Component: Other >> AssignedTo: scsi_drivers-other@kernel-bugs.osdl.org >> ReportedBy: tvignaud@mandriva.com >> Regression: No >> >> >> While debugging a partitionner software that has issues with disks bigger than >> 1Tb, I found out that scsi_debug doesn't manage more than 1Tb: >> >> # modprobe scsi_debug virtual_gb=1000 >> # cat /proc/partitions |fgrep sdc >> 8 32 1048576000 sdc >> # rmmod scsi_debug >> # modprobe scsi_debug virtual_gb=1100 >> # cat /proc/partitions |fgrep sdc >> 8 32 9223372035860725760 sdc >> >> >> dmesg shows that the additionnal 100Gb makes it loose sight: >> sd 16:0:0:0: [sdc] 2097152000 512-byte hardware sectors: (1.07 TB/1000 GiB) >> versus: >> sd 15:0:0:0: [sdc] 18446744071721451520 512-byte hardware sectors: (18.4 >> EB/15.9 EiB) > > > = > From: FUJITA Tomonori > Subject: [PATCH] scsi_debug: fix virtual disk larger than 1TB > > Signed-off-by: FUJITA Tomonori Signed-off-by: Douglas Gilbert Wow, a 1 TB ram disk! > --- > drivers/scsi/scsi_debug.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c > index 213123b..41a2177 100644 > --- a/drivers/scsi/scsi_debug.c > +++ b/drivers/scsi/scsi_debug.c > @@ -887,7 +887,7 @@ static int resp_start_stop(struct scsi_cmnd * scp, > static sector_t get_sdebug_capacity(void) > { > if (scsi_debug_virtual_gb > 0) > - return 2048 * 1024 * scsi_debug_virtual_gb; > + return 2048 * 1024 * (sector_t)scsi_debug_virtual_gb; > else > return sdebug_store_sectors; > }