Re: [Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-23 Thread John Snow
On 10/20/2017 05:02 AM, Daniel P. Berrange wrote: > On Fri, Oct 20, 2017 at 10:42:21AM +0200, Kevin Wolf wrote: >> [ Cc: qemu-block ] >> >> Am 04.10.2017 um 13:40 hat Daniel P. Berrange geschrieben: >>> The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 >>> to determine the rotati

Re: [Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-20 Thread Daniel P. Berrange
On Fri, Oct 20, 2017 at 10:42:21AM +0200, Kevin Wolf wrote: > [ Cc: qemu-block ] > > Am 04.10.2017 um 13:40 hat Daniel P. Berrange geschrieben: > > The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 > > to determine the rotations per minute of the disk. If this has > > the value 1,

Re: [Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-20 Thread Kevin Wolf
[ Cc: qemu-block ] Am 04.10.2017 um 13:40 hat Daniel P. Berrange geschrieben: > The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 > to determine the rotations per minute of the disk. If this has > the value 1, it is taken to be an SSD and so Linux sets the > 'rotational' flag to 0

Re: [Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-04 Thread John Snow
On 10/04/2017 07:40 AM, Daniel P. Berrange wrote: > The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 > to determine the rotations per minute of the disk. If this has > the value 1, it is taken to be an SSD and so Linux sets the > 'rotational' flag to 0 for the I/O queue and will

Re: [Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-04 Thread Eric Blake
On 10/04/2017 06:40 AM, Daniel P. Berrange wrote: > The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 > to determine the rotations per minute of the disk. If this has > the value 1, it is taken to be an SSD and so Linux sets the > 'rotational' flag to 0 for the I/O queue and will s

[Qemu-devel] [PATCH v1 2/2] ide: support reporting of rotation rate

2017-10-04 Thread Daniel P. Berrange
The Linux kernel will query the ATA IDENTITY DEVICE data, word 217 to determine the rotations per minute of the disk. If this has the value 1, it is taken to be an SSD and so Linux sets the 'rotational' flag to 0 for the I/O queue and will stop using that disk as a source of random entropy. Other o