I tried the following patch:
Index: linux/drivers/scsi/sd.c
===================================================================
--- linux.orig/drivers/scsi/sd.c 2014-06-26 18:40:39.214696552 +0200
+++ linux/drivers/scsi/sd.c 2014-06-27 15:52:30.776159456 +0200
@@ -2440,7 +2440,7 @@ sd_read_cache_type(struct scsi_disk *sdk
sdkp->RCD = 0;
}
- sdkp->DPOFUA = (data.device_specific & 0x10) != 0;
+ sdkp->DPOFUA = 0;
if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) {
sd_first_printk(KERN_NOTICE, sdkp,
"Uses READ/WRITE(6), disabling FUA\n");
This obviously is not the correct thing to do, but it makes the disk usable:
Jun 27 17:26:50 marge kernel: [ 523.909815] usb 2-1: new SuperSpeed USB device number 2 using xhci_hcd
Jun 27 17:26:50 marge kernel: [ 523.929246] usb 2-1: New USB device found, idVendor=152d, idProduct=0567
Jun 27 17:26:50 marge kernel: [ 523.929258] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jun 27 17:26:50 marge kernel: [ 523.929265] usb 2-1: Product: USB to ATA/ATAPI Bridge
Jun 27 17:26:50 marge kernel: [ 523.929271] usb 2-1: Manufacturer: JMicron
Jun 27 17:26:50 marge kernel: [ 523.929276] usb 2-1: SerialNumber: xxx
Jun 27 17:26:50 marge kernel: [ 523.930999] usb-storage 2-1:1.0: USB Mass Storage device detected
Jun 27 17:26:50 marge kernel: [ 523.931237] scsi12 : usb-storage 2-1:1.0
Jun 27 17:26:51 marge kernel: [ 524.930451] scsi 12:0:0:0: Direct-Access JMicron Generic 0114 PQ: 0 ANSI: 6
Jun 27 17:26:51 marge kernel: [ 524.931228] sd 12:0:0:0: Attached scsi generic sg3 type 0
Jun 27 17:26:51 marge kernel: [ 524.932964] sd 12:0:0:0: [sdd] Spinning up disk...
Jun 27 17:26:53 marge kernel: [ 525.937848] ..ready
Jun 27 17:26:53 marge kernel: [ 526.942395] sd 12:0:0:0: [sdd] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Jun 27 17:26:53 marge kernel: [ 526.943037] sd 12:0:0:0: [sdd] Write Protect is off
Jun 27 17:26:53 marge kernel: [ 526.943048] sd 12:0:0:0: [sdd] Mode Sense: 47 00 10 08
Jun 27 17:26:53 marge kernel: [ 526.943662] sd 12:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Jun 27 17:26:53 marge kernel: [ 526.987919] sdd: sdd1
Jun 27 17:26:53 marge kernel: [ 526.990055] sd 12:0:0:0: [sdd] Attached SCSI disk
Jun 27 17:27:29 marge kernel: [ 563.227849] EXT4-fs (sdd1): warning: mounting fs with errors, running e2fsck is recommended
Jun 27 17:27:29 marge kernel: [ 563.228043] EXT4-fs (sdd1): mounted filesystem with ordered data mode. Opts: (null)
(This is on another machine, but it shows the same behavior without the patch.)
Does somebody have a hint for a real fix?
Note that I also tried the following change, which did _not_ fix the issue:
Index: linux/drivers/scsi/scsi_lib.c
===================================================================
--- linux.orig/drivers/scsi/scsi_lib.c 2014-06-27 17:30:27.901581410 +0200
+++ linux/drivers/scsi/scsi_lib.c 2014-06-27 17:32:12.044958922 +0200
@@ -824,7 +824,7 @@ void scsi_io_completion(struct scsi_cmnd
* read past the end of the disk.
*/
if ((cmd->device->use_10_for_rw &&
- sshdr.asc == 0x20 && sshdr.ascq == 0x00) &&
+ (sshdr.asc == 0x20 || sshdr.asc == 0x24) && sshdr.ascq == 0x00) &&
(cmd->cmnd[0] == READ_10 ||
cmd->cmnd[0] == WRITE_10)) {
/* This will issue a new 6-byte command. */
--
Michael
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