https://bugzilla.kernel.org/show_bug.cgi?id=89511 --- Comment #43 from Jun Itou <itou_jun@xxxxxxxxxxx> --- When even 3.2.62 reboots an HDD in power supply on, it is "write through". It only becomes "write back" when I reset an HDD. Will it be that a bug of the material came to the front? Only a controller of D8927GC-002 becomes "write back" when I initialize it, is it the thing which it is not possible for in "write through" at the time of recognition somehow? root@sv-server:~# uname -a Linux sv-server 3.2.62 #1 SMP Fri Jan 9 19:06:10 JST 2015 x86_64 GNU/Linux root@sv-server:~# cat /sys/block/sdb/device/scsi_disk/*/cache_type write through root@sv-server:~# udevadm info --query=path --name=/dev/sdb /devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/host3/target3:0:0/3:0:0:0/block/sdb root@sv-server:~# echo -n "1-1" > /sys/bus/usb/drivers/usb/unbind root@sv-server:~# echo -n "1-1" > /sys/bus/usb/drivers/usb/bind root@sv-server:~# cat /sys/block/sdb/device/scsi_disk/*/cache_type write back -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
