| 2009-03-02 23:53:55 |
Luke Plant |
bug |
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added bug |
| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: status |
New |
Triaged |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: title |
Bug #336992 in ubiquity (Ubuntu): "UUID of existing partitions are changed" |
Bug #336992 in partman-basicfilesystems (Ubuntu): "UUID of existing partitions are changed" |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: importance |
Undecided |
High |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: bugtargetname |
ubiquity (Ubuntu) |
partman-basicfilesystems (Ubuntu) |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: statusexplanation |
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Great catch, thanks. It looks as if the old UUID doesn't survive being saved in a shell variable in partman-basicfilesystems; we'll have to put it in a file instead (which in retrospect is more sensible anyway). |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: assignee |
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cjwatson |
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| 2009-03-03 10:02:58 |
Colin Watson |
ubiquity: bugtargetdisplayname |
ubiquity (Ubuntu) |
partman-basicfilesystems (Ubuntu) |
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| 2009-03-03 10:05:16 |
Colin Watson |
title |
UUID of existing partitions are changed |
UUID of existing swap partitions are changed |
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| 2009-03-03 10:13:57 |
Colin Watson |
partman-basicfilesystems: status |
New |
Triaged |
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| 2009-03-03 10:13:57 |
Colin Watson |
partman-basicfilesystems: assignee |
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cjwatson |
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| 2009-03-03 10:13:57 |
Colin Watson |
partman-basicfilesystems: importance |
Undecided |
High |
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| 2009-03-03 10:13:57 |
Colin Watson |
partman-basicfilesystems: statusexplanation |
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| 2009-03-03 10:13:57 |
Colin Watson |
partman-basicfilesystems: milestone |
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ubuntu-8.04.3 |
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| 2009-03-03 10:15:32 |
Colin Watson |
partman-basicfilesystems: status |
New |
Won't Fix |
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| 2009-03-03 10:15:32 |
Colin Watson |
partman-basicfilesystems: statusexplanation |
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I don't think we can sensibly fix this in Intrepid, since it would require new installer images and there are no plans for a point release; but I do think we should fix it in 8.04.3. |
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| 2009-03-03 12:47:17 |
Colin Watson |
bug |
|
|
assigned to busybox (Ubuntu) |
| 2009-03-03 12:47:28 |
Colin Watson |
busybox: status |
New |
Won't Fix |
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| 2009-03-03 12:47:28 |
Colin Watson |
busybox: statusexplanation |
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| 2009-03-03 12:51:43 |
Colin Watson |
busybox: status |
New |
Triaged |
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| 2009-03-03 12:51:43 |
Colin Watson |
busybox: assignee |
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cjwatson |
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| 2009-03-03 12:51:43 |
Colin Watson |
busybox: importance |
Undecided |
High |
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| 2009-03-03 12:51:43 |
Colin Watson |
busybox: statusexplanation |
|
While testing my fix for this, I noticed that this whole system breaks in the alternate/server installer as of Intrepid because we use conv=notrunc and that's disabled in busybox dd. We could remove conv=notrunc, but that would cause problems for Wubi installations.
This problem does not exist in Hardy, where conv=notrunc was always supported in busybox dd regardless of configuration; at some point in between it was made a configuration option and we neglected to notice and turn it on. |
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| 2009-03-03 12:51:57 |
Colin Watson |
busybox: status |
New |
Invalid |
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| 2009-03-03 12:51:57 |
Colin Watson |
busybox: statusexplanation |
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| 2009-03-03 13:00:07 |
Launchpad Janitor |
busybox: status |
Triaged |
Fix Released |
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| 2009-03-03 13:00:17 |
Launchpad Janitor |
partman-basicfilesystems: status |
Triaged |
Fix Released |
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| 2009-06-04 21:07:08 |
Launchpad Janitor |
branch linked |
|
lp:~ubuntu-core-dev/partman-basicfilesystems/hardy-proposed |
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| 2009-06-04 21:08:29 |
Colin Watson |
partman-basicfilesystems (Ubuntu Hardy): status |
Triaged |
In Progress |
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| 2009-06-05 11:34:09 |
Colin Watson |
description |
Binary package hint: ubiquity
I installed Ubuntu Intrepid on a machine, and then made a second installation (the second time using a Hardy Live CD, I was not able to use Intrepid the second time due to bug 333584 https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/333584 ).
The second installation involved repartitioning, and when I returned to my first installation, the UUID of the swap partition had been changed, which meant that swap was no longer available, and hibernate no longer worked.
The original UUID was:
441b1300-b765-4600-813b-fd2c03e917e6
The new UUID is:
441b13b7-6546-813b-fd2c-03e917e617e6
The striking similarities between these number make me think something funny is going on, which is why I bothered to post them. Assuming the hexadecimal digits correspond to a simple array of bytes, it looks like you can generate the second UUID by this algorithm:
1) create a buffer containing the first UUID
2) set pointer1 and pointer2 to position 0
3) if byte at pointer1 == 0, increment pointer1, and go to step 3
4) copy byte at pointer1 to pointer2
5) increment pointer1 and pointer2
6) go to step 3.
The other UUID on my first installation system, i.e. for the root partition, was not changed, but it did not contain a '00' in it either, so by the above process you would not expect it to change. (Also the root partition didn't change its starting cyclinder, only the end cylinder, whereas the swap partition probably had to be created from scratch).
As mentioned above, this happened in Hardy, not Intrepid, and it looks like it could well be a libparted bug or something like that. |
I installed Ubuntu Intrepid on a machine, and then made a second installation (the second time using a Hardy Live CD, I was not able to use Intrepid the second time due to bug 333584 https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/333584 ).
The second installation involved repartitioning, and when I returned to my first installation, the UUID of the swap partition had been changed, which meant that swap was no longer available, and hibernate no longer worked.
The original UUID was:
441b1300-b765-4600-813b-fd2c03e917e6
The new UUID is:
441b13b7-6546-813b-fd2c-03e917e617e6
The striking similarities between these number make me think something funny is going on, which is why I bothered to post them. Assuming the hexadecimal digits correspond to a simple array of bytes, it looks like you can generate the second UUID by this algorithm:
1) create a buffer containing the first UUID
2) set pointer1 and pointer2 to position 0
3) if byte at pointer1 == 0, increment pointer1, and go to step 3
4) copy byte at pointer1 to pointer2
5) increment pointer1 and pointer2
6) go to step 3.
The other UUID on my first installation system, i.e. for the root partition, was not changed, but it did not contain a '00' in it either, so by the above process you would not expect it to change. (Also the root partition didn't change its starting cylinder, only the end cylinder, whereas the swap partition probably had to be created from scratch).
As mentioned above, this happened in Hardy, not Intrepid, and it looks like it could well be a libparted bug or something like that.
This was fixed in partman-basicfilesystems 62ubuntu2 in jaunty:
http://bazaar.launchpad.net/~ubuntu-core-dev/partman-basicfilesystems/ubuntu/revision/574
I've backported this change to hardy-proposed:
http://bazaar.launchpad.net/~ubuntu-core-dev/partman-basicfilesystems/hardy-proposed/revision/562
TEST CASE: Perform an installation on a blank disk, then set the UUID of the swap partition to one containing at least one zero byte; the UUID provided by the reporter of this bug will do fine. You can do that like this, assuming that the swap partition is /dev/sda5:
sudo swapoff /dev/sda5
sudo mkswap -U 441b1300-b765-4600-813b-fd2c03e917e6 /dev/sda5
Having done this, reboot and do another installation overwriting the previous one's root filesystem and just using the existing swap partition; you'll need to use the manual partitioner to do this properly. After rebooting, run 'sudo vol_id -u /dev/sda5' and confirm that the UUID shown is exactly that which you set previously.
REGRESSION POTENTIAL: It might be worth making sure that installations with a fresh swap partition (i.e. no UUID to preserve) keep on working. |
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| 2009-06-05 11:35:57 |
Colin Watson |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2009-06-05 11:44:37 |
Colin Watson |
summary |
UUID of existing swap partitions are changed |
UUIDs of existing swap partitions are changed |
|
| 2009-06-09 17:37:32 |
Steve Langasek |
partman-basicfilesystems (Ubuntu Hardy): status |
In Progress |
Fix Committed |
|
| 2009-06-09 17:37:44 |
Steve Langasek |
tags |
|
verification-needed |
|
| 2009-06-23 19:00:31 |
Steve Beattie |
tags |
verification-needed |
verification-done |
|
| 2009-06-25 13:56:40 |
Launchpad Janitor |
partman-basicfilesystems (Ubuntu Hardy): status |
Fix Committed |
Fix Released |
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| 2009-07-08 17:26:12 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/karmic/busybox |
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| 2009-12-05 03:28:23 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/partman-basicfilesystems |
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| 2009-12-05 03:35:32 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/hardy-proposed/partman-basicfilesystems |
|
