Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-09-12 Thread Alan Stern
On Mon, 12 Sep 2016, Oliver Neukum wrote: > Some SATA to USB bridges fail to cooperate with some > drives resulting in no cache being present being reported > to the host. That causes the host to skip sending > a command to synchronize caches. That causes data loss > when the drive is powered

[PATCH] scsi: introduce a quirk for false cache reporting

2016-09-12 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-09-09 Thread Greg KH
On Fri, Sep 09, 2016 at 07:26:17AM -0400, Martin K. Petersen wrote: > > "Oliver" == Oliver Neukum writes: > > Oliver> On Thu, 2016-08-18 at 22:19 -0400, Martin K. Petersen wrote: > >> > "Oliver" == Oliver Neukum writes: > >> > Oliver> Some SATA to

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-09-09 Thread Martin K. Petersen
> "Oliver" == Oliver Neukum writes: Oliver> On Thu, 2016-08-18 at 22:19 -0400, Martin K. Petersen wrote: >> > "Oliver" == Oliver Neukum writes: >> Oliver> Some SATA to USB bridges fail to cooperate with some drives Oliver> resulting in no cache being

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-09-08 Thread Oliver Neukum
On Thu, 2016-08-18 at 22:19 -0400, Martin K. Petersen wrote: > > "Oliver" == Oliver Neukum writes: > > Oliver> Some SATA to USB bridges fail to cooperate with some drives > Oliver> resulting in no cache being present being reported to the > Oliver> host. That causes the

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-18 Thread Martin K. Petersen
> "Oliver" == Oliver Neukum writes: Oliver> Some SATA to USB bridges fail to cooperate with some drives Oliver> resulting in no cache being present being reported to the Oliver> host. That causes the host to skip sending a command to Oliver> synchronize caches. That causes

[PATCH] scsi: introduce a quirk for false cache reporting

2016-08-16 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-16 Thread Oliver Neukum
On Tue, 2016-08-16 at 00:44 -0400, Martin K. Petersen wrote: > > "Oliver" == Oliver Neukum writes: > > Oliver, > > Oliver> wce_default_on controls the default if the device provides no > Oliver> indication. The problem here is that the indication the device > Oliver>

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-15 Thread Martin K. Petersen
> "Oliver" == Oliver Neukum writes: Oliver, Oliver> wce_default_on controls the default if the device provides no Oliver> indication. The problem here is that the indication the device Oliver> provides must be overridden, as they are false. Can't you just blacklist the

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-14 Thread Oliver Neukum
On Wed, 2016-08-10 at 22:40 -0400, Martin K. Petersen wrote: > > "Oliver" == Oliver Neukum writes: > > Oliver> Some SATA to USB bridges fail to cooperate with some drives > Oliver> resulting in no cache being present being reported to the > Oliver> host. That causes the

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-10 Thread Martin K. Petersen
> "Oliver" == Oliver Neukum writes: Oliver> Some SATA to USB bridges fail to cooperate with some drives Oliver> resulting in no cache being present being reported to the Oliver> host. That causes the host to skip sending a command to Oliver> synchronize caches. That causes

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-09 Thread Alan Stern
On Mon, 8 Aug 2016, Martin K. Petersen wrote: > > "Oliver" == Oliver Neukum writes: > > Oliver> Some SATA to USB bridges fail to cooperate with some drives > Oliver> resulting in no cache being present being reported to the > Oliver> host. That causes the host to skip

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-08 Thread Martin K. Petersen
> "Oliver" == Oliver Neukum writes: Oliver> Some SATA to USB bridges fail to cooperate with some drives Oliver> resulting in no cache being present being reported to the Oliver> host. That causes the host to skip sending a command to Oliver> synchronize caches. That causes

[PATCH] scsi: introduce a quirk for false cache reporting

2016-08-08 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-08-02 Thread Johannes Thumshirn
On Tue, Jul 12, 2016 at 10:24:36AM +0200, Oliver Neukum wrote: > Some SATA to USB bridges fail to cooperate with some > drives resulting in no cache being present being reported > to the host. That causes the host to skip sending > a command to synchronize caches. That causes data loss > when the

[PATCH] scsi: introduce a quirk for false cache reporting

2016-07-19 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum

[PATCH] scsi: introduce a quirk for false cache reporting

2016-07-12 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum

Re: [PATCH] scsi: introduce a quirk for false cache reporting

2016-07-11 Thread Alan Stern
On Mon, 11 Jul 2016, Oliver Neukum wrote: > Some SATA to USB bridges fail to cooperate with some > drives resulting in no cache being present being reported > to the host. That causes the host to skip sending > a command to synchronize caches. That causes data loss > when the drive is powered

[PATCH] scsi: introduce a quirk for false cache reporting

2016-07-11 Thread Oliver Neukum
Some SATA to USB bridges fail to cooperate with some drives resulting in no cache being present being reported to the host. That causes the host to skip sending a command to synchronize caches. That causes data loss when the drive is powered down. Signed-off-by: Oliver Neukum