[6423] in linux-scsi channel archive
Re: End of tape
daemon@ATHENA.MIT.EDU (Richard Fish)
Mon Apr 26 13:13:05 1999
Date: Mon, 26 Apr 1999 02:59:22 -0700
From: Richard Fish <rjf@estinc.com>
To: linux-scsi@vger.rutgers.edu
Drew Eckhardt wrote:
> An early-end-of-tape warning _could_ be useful for certain
applications.
Possibly, but IMO a better behavior is when we encounter early EOM the
driver should return the actual number of bytes written (usually, the
full amount), then for future write()'s return ENOSPC. If during a
write we encounter EOM, the driver should return the actual number of
bytes written, then for future write()'s return EIO. AFAIK, this *is*
what the current st driver does.
Thus, the application needn't be concerned about whether we are getting
close to EOM. You get the best possible behavior whether the drive
signals early EOM or not.
--
Richard Fish Enhanced Software Technologies, Inc.
Software Developer 4014 E Broadway Rd Suite 405
rjf@estinc.com Phoenix, AZ 85040
(602) 470-1115 http://www.estinc.com
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