** Changed in: partman-base (Debian)
Status: New => Fix Released
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
Images in:
http://cdimages.ubuntu.com/ubuntu-server/precise/daily/current/
Have this updated partman-base.
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Title:
Partitions are misaligned
Does anyone have any clever approaches for install this updated udeb
into a precise installer? Things I've tried:
* downloading and installing an updated deb in preseed/early_command fails
since the postinst tries to run parted and it's too early to do so
* downloading and installing an updated
** Changed in: partman-base (Debian)
Status: Fix Released = New
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
** Changed in: oem-priority/precise
Status: Fix Committed = Fix Released
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Title:
Partitions are misaligned when using GPT on disks w/
This bug was fixed in the package partman-base - 153ubuntu5
---
partman-base (153ubuntu5) precise-proposed; urgency=low
* Permit non-cylinder alignment again on GPT (closes: #674894,
LP: #1006894).
-- Colin Watson cjwat...@ubuntu.com Mon, 02 Jul 2012 14:54:45 +0100
**
For Precise, I tested this on both GPT style partition tables and PC MBR
style partition tables. The GPT disks are now aligned. I detected no
regressions in the MBR disks.
** Tags removed: verification-needed
** Tags added: verification-done
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** Changed in: oem-priority/precise
Status: In Progress = Fix Committed
** Changed in: oem-priority
Status: In Progress = Fix Committed
** Also affects: oem-priority/quantal
Importance: Critical
Assignee: Chris Van Hoof (vanhoof)
Status: Fix Committed
** Changed in:
Hello Christopher, or anyone else affected,
Accepted partman-base into precise-proposed. The package will build now
and be available at http://launchpad.net/ubuntu/+source/partman-
base/153ubuntu5 in a few hours, and then in the -proposed repository.
Please help us by testing this new package.
** Branch linked: lp:~ubuntu-branches/ubuntu/precise/partman-base
/precise-proposed
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Title:
Partitions are misaligned when using GPT on disks w/
** Changed in: partman-base (Debian)
Status: Unknown = Fix Released
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Title:
Partitions are misaligned when using GPT on disks w/ 4096
** Changed in: oem-priority/precise
Status: Confirmed = In Progress
** Changed in: oem-priority
Status: Confirmed = In Progress
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** Changed in: partman-base (Ubuntu Quantal)
Status: Confirmed = In Progress
** Changed in: partman-base (Ubuntu Quantal)
Milestone: None = quantal-alpha-3
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** Also affects: partman-base (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=674894
Importance: Unknown
Status: Unknown
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This bug was fixed in the package partman-base - 158ubuntu1
---
partman-base (158ubuntu1) quantal; urgency=low
* Resynchronise with Debian. Remaining changes:
- Ubiquity integration: If PARTMAN_NO_COMMIT is set, then exit rather
than running commit.d and finish.d
** Branch linked: lp:~ubuntu-core-dev/partman-base/precise-proposed
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
** Description changed:
+ [Impact] GPT partitioning always uses cylinder alignment, which is pessimal
for performance on most modern disks.
+ [Test Case] Do a server install on a blank disk with the
'partman-partitioning/default_label=gpt' boot parameter. Accept all defaults
for partitioning.
** Branch linked: lp:debian/partman-base
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
physical sectors
To manage
** Also affects: partman-base (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: partman-base (Ubuntu Quantal)
Importance: Critical
Assignee: Colin Watson (cjwatson)
Status: Confirmed
** Changed in: partman-base (Ubuntu Precise)
Status: New =
** Tags added: rls-q-incoming
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
physical sectors
To manage notifications
** Changed in: oem-priority
Assignee: James M. Leddy (jm-leddy) = Chris van Hoof (vanhoof)
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Title:
Partitions are misaligned when using GPT
** Changed in: partman-base (Ubuntu)
Importance: High = Critical
** Tags added: rls-mgr-p-tracking
** Changed in: oem-priority
Importance: High = Critical
** Changed in: oem-priority/precise
Importance: Undecided = Critical
** Changed in: oem-priority/precise
Assignee:
** Changed in: oem-priority/precise
Status: New = Confirmed
** Changed in: oem-priority
Status: New = Incomplete
** Changed in: oem-priority
Status: Incomplete = Confirmed
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This upstream bug seems like it may be related: http://bugs.debian.org
/cgi-bin/bugreport.cgi?bug=674894
** Bug watch added: Debian Bug tracker #674894
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=674894
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Title:
Partitions are misaligned when using GPT on disks w/ 4096 byte
physical sectors
To manage notifications about this bug go to:
Also, note that the partman/alignment=minimal was just used as a test
to see if it made any difference. I found this issue without using any
special kernel command line option.
Also, I'm attaching the disk-recipe I used for the install.
** Attachment added: disk-recipe
Adding the OEM Priority task because this issue affects some of
Canonical's OEM customer projects in which disk performance will be
degraded and cause a poor user experience.
Also, I can make an image available that has the full preseeded install.
** Also affects: oem-priority
Importance:
Could you post:
/sys/block/sda/alignment_offset
/sys/block/sda/queue/minimum_io_size
/sys/block/sda/queue/optimal_io_size
/sys/block/sda/queue/physical_block_size
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** Changed in: oem-priority
Assignee: (unassigned) = James M. Leddy (jm-leddy)
** Changed in: partman-base (Ubuntu)
Status: New = Incomplete
** Changed in: partman-base (Ubuntu)
Assignee: (unassigned) = Colin Watson (cjwatson)
** Changed in: partman-base (Ubuntu)
Importance:
@Colin:
Here is your requested info:
$ cat /sys/block/sda/alignment_offset
0
$ cat /sys/block/sda/queue/minimum_io_size
4096
$ cat /sys/block/sda/queue/optimal_io_size
0
$ cat /sys/block/sda/queue/physical_block_size
4096
Also note that this has been seen on both Dell and Lenovo hardware.
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** Also affects: oem-priority/precise
Importance: Undecided
Status: New
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Title:
Partitions are misaligned when using GPT on disks w/
** Changed in: partman-base (Ubuntu)
Status: Incomplete = Confirmed
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Title:
Partitions are misaligned when using GPT on disks w/ 4096
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