Date: Thu, 20 Jan 2011 15:25:01 -0800 From: Matthew Jacob <mj@feral.com> To: freebsd-scsi@freebsd.org Subject: Re: rescan causes offlined tape to reload Message-ID: <4D38C44D.6080703@feral.com> In-Reply-To: <ihad7a$26l1$1@hairball.ziemba.us> References: <ihad7a$26l1$1@hairball.ziemba.us>
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My recollection is that when you 'eject' a DLT, unless you operate the handle, or it's part of a changer unit that does it for you, any subsequent Test Unit Ready will reload it. Other than that, there are couple of candidate changes in the XPT layer in the time frame you talk of which may be inducing this behavior. Any way you can get a trace of the SCSI commands sent? On 1/20/2011 2:33 PM, G. Paul Ziemba wrote: > I have a DLT7000 scsi tape. Behavior of "camcontrol rescan all" > seems to have changed between FreeBSD stable of 2009-Nov-17 and > 2011-Jan-11. > > I execute the following sequence of commands: > > # camcontrol eject sa0 > # camcontrol rescan all > > If there is a tape in the drive, the "eject" unloads it. > > On the old system: the rescan command does not affect the state of the tape. > > On the new system: the rescan command causes the tape to load. It seems > incorrect to me. > > Is the new behavior a bug? > > thanks, > > ~!paul
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