| cjwatson | hm, I forgot to rebase netcfg for some reason | 01:28 |
|---|---|---|
| === rgreening_ is now known as rgreening | ||
| Jemt | Hello again, folks. | 12:41 |
| Jemt | A quick question regarding initrd. As mentioned earlier, I use the Live CD to boot Ubuntu installations on USB sticks. The USB stick, however, may be upgraded over the months, resulting in a new Initrd being created. Will Ubuntu always work if I boot it using an older version of Initrd? The kernel is hold back, so that's never upgraded | 12:43 |
| Jemt | I fear that packages somehow may depend on new functionality in the newly created initrd. This probably won't be available if the system is booted using an older version of initrd | 12:44 |
| cjwatson | packages other than the kernel may cause the initramfs to be regenerated | 12:44 |
| Jemt | Yes, I know - e.g. udev | 12:44 |
| cjwatson | if you're talking about just a stable release though, and forcibly hold the initramfs back (e.g. by never copying it out to the top level of the USB stick), you should be OKK | 12:45 |
| cjwatson | OK | 12:45 |
| cjwatson | just don't try to do that across updates between releases | 12:45 |
| Jemt | But as you mentioned, any package may force initrd to be re-generated. Don't you think that's because they require changes to initrd to work properly ? | 12:46 |
| Jemt | I was also considering holding back changes to initrd somehow, but really, almost any package could have it regenerate. I would probably have to disable the update manager to keep that from happening | 12:55 |
| Jemt | cjwatson: Is it possible to have a custom script run after package installations? I need something to trigger my "restore" script which will do "ln -s /boot/old-initrd /initrd.img" | 13:19 |
| Jemt | Nonsens... I just realized something. Holding it back on the USB stick is not the solution, since the older initrd on the Live CD is still used to boot the USB stick | 13:27 |
| Jemt | What I need, is to make sure the USB stick will always boot with the "old" kernel and initrd on the Live CD, even though the USB stick is up-to-date | 13:28 |
| Jemt | cjwatson: I found evidence to support what you said (not that I don't trust you :-)). /etc/initramfs-tools/update-initramfs.conf contains an option to disable updates to initrd. So it is unlikely that packages will break if the "old" initrd is used. | 13:58 |
| Jemt | Option is called "update_initramfs={yes/all/no} | 13:59 |
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