I have had the same issue with WD's advanced format HDDs since Oneric (precise as well). Have spoke to WD and according to them misaligned extended partition was an error with dusk utility because 'parted - print ' showed the main partition beginning at sector 2048 which is divisible by their 512 sector size for those drives. I was basically told that if I was not experiencing issues to ignore it. Note: the person I spoke with was not regular tech support but a member of their staff who just happens to use Ubuntu. I have posted a bug on this and he commented on it.
Sent from Eddie's iPhone odosielané z iPhone Eddieho On Mar 11, 2012, at 11:02 PM, Danny Howard <danny...@toldme.com> wrote: > 10.04.4 LTS: > > Formatting sdc3 (WDC WD20EARX-00P) to a full-disk ext4 partition via > gparted: > > mkfs.ext4 -j -O extent -L '' /dev/sdc1 > > dev/sdc1 alignment is offset by 512 bytes. > This may result in very poor performance, (re)-partitioning suggested. > Filesystem label= > OS type: Linux > Block size=4096 (log=2) > Fragment size=4096 (log=2) > Stride=1 blocks, Stripe width=0 blocks > 122101760 inodes, 488378000 blocks > 24418900 blocks (5.00%) reserved for the super user > First data block=0 > Maximum filesystem blocks=4294967296 > 14905 block groups > 32768 blocks per group, 32768 fragments per group > 8192 inodes per group > Superblock backups stored on blocks: > 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, > 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, > 102400000, 214990848 > > Writing inode tables: done > Creating journal (32768 blocks): done > Writing superblocks and filesystem accounting information: done > > This filesystem will be automatically checked every 33 mounts or > 180 days, whichever comes first. Use tune2fs -c or -i to override. > > Oookay, soo ... it is not obvious to me how to fix this. I'll try > resizing the partition with the first 1M empty, as suggested in that IBM > article. I trying unselecting alignment to sector but I got errors all > over the place. > > ** Attachment added: "GParted reports misalignment." > > https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/879387/+attachment/2854193/+files/gparted_details.htm > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/879387 > > Title: > Partitions misaligned on advanced format drive WD20EARX > > Status in “ubiquity” package in Ubuntu: > Confirmed > > Bug description: > After installing Ubuntu Oneiric 11.10 using manual partitioning on a > 2TB Western Digital WD20EARX with "advanced format" (4k sectors?) Disk > Utility says all partitions are misaligned. Parted tells the same > story (below). I'd expect the partitioner to align partitions. > > $ sudo parted -l > Model: ATA WDC WD20EARX-00P (scsi) > Disk /dev/sda: 2000GB > Sector size (logical/physical): 512B/4096B > Partition Table: gpt > > Number Start End Size File system Name Flags > 1 17.4kB 25.0GB 25.0GB ext4 > 2 25.0GB 125GB 100GB > 3 125GB 150GB 25.0GB linux-swap(v1) > 4 150GB 2000GB 1850GB ext4 > > $ sudo parted /dev/sda align-check opt 1 > 1 not aligned > $ sudo parted /dev/sda align-check min 1 > 1 not aligned > > ProblemType: Bug > DistroRelease: Ubuntu 11.10 > Package: ubiquity (not installed) > ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 > Uname: Linux 3.0.0-12-generic x86_64 > ApportVersion: 1.23-0ubuntu3 > Architecture: amd64 > Date: Fri Oct 21 14:39:37 2011 > InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) > ProcEnviron: > PATH=(custom, no user) > LANG=en_US.UTF-8 > SHELL=/bin/bash > SourcePackage: ubiquity > UpgradeStatus: No upgrade log present (probably fresh install) > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/879387/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/879387 Title: Partitions misaligned on advanced format drive WD20EARX To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/879387/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
