From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.server123.net (Postfix) with ESMTPS for ; Sun, 10 Jan 2016 16:18:18 +0100 (CET) MIME-Version: 1.0 Message-ID: From: "Eugen Rogoza" Content-Type: text/plain; charset=UTF-8 Date: Sun, 10 Jan 2016 16:18:17 +0100 Subject: Re: [dm-crypt] Alignment issue with 4K disk List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de > My personal opinion is: The test is semantically wrong in different > aspects. May I ask what drive you are using and what interface it uses? > > Regards > > -Sven Hi Sven, drive info below: /dev/sdc: ATA device, with non-removable media Model Number: WDC WD60EZRX-00MVLB1 Serial Number: WD-WX41D94RNKAX Firmware Revision: 80.00A80 Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0 Standards: Used: unknown (minor revision code 0x001f) Supported: 9 8 7 6 5 Likely used: 9 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors:11721045168 Logical Sector size: 512 bytes Physical Sector size: 4096 bytes device size with M = 1024*1024: 5723166 MBytes device size with M = 1000*1000: 6001175 MBytes (6001 GB) cache/buffer size = unknown Nominal Media Rotation Rate: 5700 Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, with device specific minimum R/W multiple sector transfer: Max = 16 Current = 0 DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * SMART feature set Security Mode feature set * Power Management feature set * Write cache * Look-ahead * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * DOWNLOAD_MICROCODE Power-Up In Standby feature set * SET_FEATURES required to spinup after power up SET_MAX security extension * 48-bit Address feature set * Device Configuration Overlay feature set * Mandatory FLUSH_CACHE * FLUSH_CACHE_EXT * SMART error logging * SMART self-test * General Purpose Logging feature set * 64-bit World wide name * WRITE_UNCORRECTABLE_EXT command * {READ,WRITE}_DMA_EXT_GPL commands * Segmented DOWNLOAD_MICROCODE * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Gen3 signaling speed (6.0Gb/s) * Native Command Queueing (NCQ) * Host-initiated interface power management * Phy event counters * NCQ priority information * unknown 76[15] DMA Setup Auto-Activate optimization Device-initiated interface power management * Software settings preservation * SMART Command Transport (SCT) feature set * SCT Write Same (AC2) * SCT Features Control (AC4) * SCT Data Tables (AC5) unknown 206[12] (vendor specific) unknown 206[13] (vendor specific) * DOWNLOAD MICROCODE DMA command * WRITE BUFFER DMA command * READ BUFFER DMA command Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count supported: enhanced erase Logical Unit WWN Device Identifier: 50014ee20b2a3e40 NAA : 5 IEEE OUI : 0014ee Unique ID : 20b2a3e40 Checksum: correct It is internal 3,5" SATA-drive put into a USB3-enclosure and connected via USB3 in UAS mode: Jan 10 01:13:26 nuc kernel: usb 2-4: new SuperSpeed USB device number 2 using xhci_hcd Jan 10 01:13:26 nuc kernel: usb 2-4: New USB device found, idVendor=174c, idProduct=55aa Jan 10 01:13:26 nuc kernel: usb 2-4: New USB device strings: Mfr=2, Product=3, SerialNumber=1 Jan 10 01:13:26 nuc kernel: usb 2-4: Product: ASM1153E Jan 10 01:13:26 nuc kernel: usb 2-4: Manufacturer: asmedia Jan 10 01:13:26 nuc kernel: usb 2-4: SerialNumber: 1234567891C4 Jan 10 01:13:26 nuc kernel: scsi host4: uas Jan 10 01:13:26 nuc kernel: usbcore: registered new interface driver uas Jan 10 01:13:26 nuc kernel: scsi 4:0:0:0: Direct-Access ASMT 2115 0 PQ: 0 ANSI: 6 Jan 10 01:13:26 nuc kernel: sd 4:0:0:0: Attached scsi generic sg2 type 0 Jan 10 01:13:26 nuc kernel: sd 4:0:0:0: [sdc] Spinning up disk... Jan 10 01:13:27 nuc kernel: ............ready Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] 11721045168 512-byte logical blocks: (6.00 TB/5.45 TiB) Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] 4096-byte physical blocks Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] Write Protect is off Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] Mode Sense: 43 00 00 00 Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Jan 10 01:13:38 nuc kernel: sdc: sdc1 sdc2 sdc3 sdc4 Jan 10 01:13:38 nuc kernel: sd 4:0:0:0: [sdc] Attached SCSI disk As a side note: sdc4 was a dm-crypt/LUKS-encrypted partition before. To my knowledge the device mapper warnings started to appear after migration to VeraCrypt. Cheers, Eugen