From: Paolo Bonzini <pbonzini@redhat.com>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH 1/5] scsi-disk: removable hard disks support START/STOP
Date: Mon, 23 Jul 2012 18:50:19 +0200 [thread overview]
Message-ID: <500D80CB.80601@redhat.com> (raw)
In-Reply-To: <CAAu8pHvBksAWy3a9s3B_MRVoxOHKWXXLh7iGoErv=-=YkB-zeA@mail.gmail.com>
Il 23/07/2012 18:44, Blue Swirl ha scritto:
>> > Support for START/STOP UNIT right now is limited to CD-ROMs. This is wrong,
>> > since removable hard disks (in the real world: SD card readers) also support
>> > it in pretty much the same way.
> I remember vaguely tuning a set of large SCSI hard disks
> (non-removable) so that they all didn't start immediately at the same
> time (which could have burned out the PSU) but only with START UNIT
> command. I think Linux or maybe even the BIOS started the drives
> (nicely in sequence) before accessing the drive.
Yes, all disks do start/stop. Removable disks support load and eject in
addition. I'll fix the commit message.
Paolo
next prev parent reply other threads:[~2012-07-23 16:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-16 14:25 [PATCH 0/5] virtio-scsi: support block_resize Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
2012-07-16 14:25 ` [PATCH 1/5] scsi-disk: removable hard disks support START/STOP Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
2012-07-23 16:44 ` Blue Swirl
2012-07-23 16:50 ` Paolo Bonzini [this message]
2012-07-16 14:25 ` [PATCH 2/5] scsi-disk: report resized disk via sense codes Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
2012-07-17 11:14 ` Kevin Wolf
2012-07-17 11:15 ` Paolo Bonzini
2012-07-16 14:25 ` [PATCH 3/5] scsi: establish precedence levels for unit attention Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
2012-07-16 14:25 ` [PATCH 4/5] scsi: report parameter changes to HBA drivers Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
2012-07-16 14:25 ` [PATCH 5/5] virtio-scsi: report parameter change events Paolo Bonzini
2012-07-16 14:25 ` [Qemu-devel] " Paolo Bonzini
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