Can't seem to turn off write caching. ~ dt1:sudo hdparm -I /dev/sdc1
/dev/sdc1: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ATA device, with non-removable media Model Number: ��+@�Z#��C����`@�������`�O�@�_�@��=����� Serial Number: i`�ih���I@�k= �l�� Firmware Revision: ����퉠 �� Media Serial Num: Ơ��K���`��,���|� ���` Media Manufacturer: ���Š����`��� Transport: Parallel; Revision: 0xf4bb Standards: Used: unknown (minor revision code 0xf35e) Supported: 12 10 Likely used: 12 Configuration: CHS addressing not supported LBA user addressable sectors: 4085503040 Logical Sector size: 3431065366 bytes Physical Sector size: 3431065366 bytes device size with M = 1024*1024: 13368250701391 MBytes device size with M = 1000*1000: 14017626847461 MBytes (14017626847 GB) cache/buffer size = unknown Nominal Media Rotation Rate: 62291 Capabilities: LBA, IORDY(may be)(cannot be disabled) Queue depth: 13 Standby timer values: spec'd by Standard, no device specific minimum R/W multiple sector transfer: Max = 129 Current = 94 Recommended acoustic management value: 68, current value: 32 DMA: *mdma0 *mdma1 mdma3 *mdma4 *mdma5 *mdma6 *mdma7 (?) Cycle time: min=62312ns recommended=57024ns PIO: pio0 pio1 pio2 Cycle time: no flow control=62367ns IORDY flow control=41600ns * reserved 69[2] * reserved 69[3] * reserved 69[4] * reserved 69[6] * DOWNLOAD MICROCODE DMA command * SET MAX SETPASSWORD/UNLOCK DMA commands * DEVICE CONFIGURATION SET/IDENTIFY DMA commands * Long physical sector diagnostics * CFast specification support * Data Set Management TRIM supported (limit 62355 blocks) * Deterministic read ZEROs after TRIM Removable Media Status Notification feature set supported Security: Master password revision code = 34944 not supported not enabled not locked not frozen not expired: security count supported: enhanced erase Integrity word not set (found 0xf371, expected 0x88a5) SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Device Sleep: DEVSLP Exit Timeout (DETO): 20 ms (default) Minimum DEVSLP Assertion Time (MDAT): 10 ms (default) ~ ~ dt1:sudo hdparm -W /dev/sdc1 /dev/sdc1: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 write-caching = not supported ~ ~ dt1:sudo hdparm -W0 /dev/sdc1 /dev/sdc1: setting drive write-caching to 0 (off) SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 write-caching = not supported ~ dt1:sudo hdparm -W /dev/sdc1 /dev/sdc1: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 write-caching = 1 (on) ~ I also tried with /dev/sdc, ~ dt1:sudo hdparm -W0 /dev/sdc /dev/sdc: setting drive write-caching to 0 (off) SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 write-caching = 0 (off) ~ dt1:sudo hdparm -W /dev/sdc /dev/sdc: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 write-caching = 1 (on) ~ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1366538 Title: Synchronisation/close /dev/sdX: i/o error on target host Status in linux package in Ubuntu: Triaged Status in linux source package in Trusty: Triaged Status in linux source package in Utopic: Triaged Status in linux source package in Vivid: Triaged Bug description: Ubuntu 14.04.1 x86-64 wanting to unmout a pata drive (usb attached), I get this (title) "Warning from libparted" when gparted launches. Same issue with another pc x86-64 Errors retries then ignore, shred /dev/sdi fails: shred: /dev/sdi : pass 1/2 (random)… shred: /dev/sdi : pass 1/2 (random)…231MiB/94GiB 0 % shred: /dev/sdi : failure of fdatasync: i/o error on target host I reached to shred the drive from a 12.04.4 i386 pc with no error. Sep 7 15:07:08 nux kernel: [261448.072475] usb 5-1: new high-speed USB device number 10 using xhci_hcd Sep 7 15:07:09 nux kernel: [261448.202999] usb 5-1: New USB device found, idVendor=04cf, idProduct=8818 Sep 7 15:07:09 nux kernel: [261448.203008] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Sep 7 15:07:09 nux kernel: [261448.203013] usb 5-1: Product: USB Mass Storage Device Sep 7 15:07:09 nux kernel: [261448.203018] usb 5-1: Manufacturer: Myson Century, Inc. Sep 7 15:07:09 nux kernel: [261448.205463] usb-storage 5-1:1.0: USB Mass Storage device detected Sep 7 15:07:09 nux kernel: [261448.205673] scsi20 : usb-storage 5-1:1.0 Sep 7 15:07:10 nux kernel: [261449.206849] scsi 20:0:0:0: Direct-Access HTS72101 0G9AT00 MCZO PQ: 0 ANSI: 0 CCS Sep 7 15:07:10 nux kernel: [261449.207763] sd 20:0:0:0: Attached scsi generic sg7 type 0 Sep 7 15:07:10 nux kernel: [261449.207901] sd 20:0:0:0: [sdi] 195371568 512-byte logical blocks: (100 GB/93.1 GiB) Sep 7 15:07:10 nux kernel: [261449.208068] sd 20:0:0:0: [sdi] Write Protect is off Sep 7 15:07:10 nux kernel: [261449.208074] sd 20:0:0:0: [sdi] Mode Sense: 00 14 00 00 Sep 7 15:07:10 nux kernel: [261449.208280] sd 20:0:0:0: [sdi] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Sep 7 15:07:10 nux kernel: [261449.555232] sdi: unknown partition table Sep 7 15:07:10 nux kernel: [261449.555926] sd 20:0:0:0: [sdi] Attached SCSI disk Sep 7 15:07:43 nux kernel: [261482.219026] end_request: critical target error, dev sdi, sector 0 Sep 7 15:07:52 nux kernel: [261492.015180] end_request: critical target error, dev sdi, sector 0 Sep 7 15:07:55 nux kernel: [261494.261159] end_request: critical target error, dev sdi, sector 0 Sep 7 15:16:23 nux kernel: [262003.027005] end_request: critical target error, dev sdi, sector 0 Sep 7 15:16:35 nux kernel: [262014.215352] end_request: critical target error, dev sdi, sector 0 Sep 7 15:16:35 nux kernel: [262014.859651] end_request: critical target error, dev sdi, sector 0 [EDIT: Once shreded, no error on the i386, but still same error on the 2 x86-64] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1366538/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp