Date: Fri, 04 Apr 2014 14:50:39 +0300 From: Alexander Motin <mav@FreeBSD.org> To: FreeBSD SCSI <freebsd-scsi@freebsd.org>, FreeBSD Hardware <freebsd-hardware@FreeBSD.org> Subject: Are there still cd(4) changers? Message-ID: <533E9C8F.20005@FreeBSD.org>
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Hi. Does anybody still use CD changer supported by cd(4) driver in FreeBSD, not ch(4)? Those changers have single drive, but report multiple LUNs with one LUN per CD slot. One device like I have in my table is 17 year old. All devices I can find with Google or eBay are CD, not even DVD, and are parallel ATA or parallel SCSI. Is there anything relevant still on market? I am asking this because code supporting that hardware in FreeBSD is heavily broken in head and stable/10 branches for several months now, and fix seems to be non-trivial. So my question is: does it worth bothering with rewrite, or we can just drop ~20KB of unused and quite complicated code? Dropping code does not mean those devices will be unusable, but only that _simultaneous_ access to different LUNs will become much slower due to inefficient scheduling of disk loads/unloads. -- Alexander Motin
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