On 6/21/20 11:50 AM, Rob Clark wrote: > This looks like a device issue to be taken with the flash vendor: >> There's no way for a end-user to file a bug report with the flash vendor >> on a device bought from an OEM and even if they would accept the bug >> report they wouldn't re-provision the flash in an shipped device. >> >> So you will have to work around this in the driver. > oh, ugg.. well I think these msgs from dmesg identify the part if we > end up needing to use a denylist: > > scsi 0:0:0:49488: Well-known LUN SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > scsi 0:0:0:49476: Well-known LUN SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > scsi 0:0:0:49456: Well-known LUN SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > scsi 0:0:0:0: Direct-Access SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > scsi 0:0:0:1: Direct-Access SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > sd 0:0:0:0: [sda] 29765632 4096-byte logical blocks: (122 GB/114 GiB) > sd 0:0:0:0: [sda] Write Protect is off > sd 0:0:0:0: [sda] Mode Sense: 00 32 00 10 > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports > DPO and FUA > sd 0:0:0:0: [sda] Optimal transfer size 786432 bytes > scsi 0:0:0:2: Direct-Access SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > scsi 0:0:0:3: Direct-Access SKhynix H28S8Q302CMR A102 PQ: 0 ANSI: 6 > > > (otoh I guess the driver could just notice that writeboost keeps > failing and stop trying to use it) > > BR, > -R FWIW, I see this on my c630 as well, but my LUN shows up as scsi 0:0:0:49488: Well-known LUN SAMSUNG KLUDG4U1EA-B0C1 0500 PQ: 0 ANSI: 6
