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Good gentoo rescue disk with recent kernel + btrfs-progs?
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davidm
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PostPosted: Tue Mar 24, 2015 8:00 pm    Post subject: Good gentoo rescue disk with recent kernel + btrfs-progs? Reply with quote

[solved thanks to Neddy]

Hi I wasn't sure where to put this but this seems a reasonable area. I have my system setup but recently had a scare after a power failure. Basically I have a minimal Gentoo install CD from December 2014 but that isn't really good enough since I run btrfs on root and the kernel+btrfs=progs is quite old. The problem is I might need to run 'btrfs check --repair' and having a really old kernel and btrfs-progs is not a great idea. To run the repair you need to have the filesystem unmounted so that means using an alternate install/rescue medium.

Is there such a tool or disk image out there with a kernel which is say >=3.17.8 with a built in btrfs-progs within the last six months? I gues sI could try to roll my own but I figured surely there is something already available like this tha tI am missing?

Thanks.


Last edited by davidm on Tue Mar 24, 2015 8:20 pm; edited 2 times in total
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NeddySeagoon
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PostPosted: Tue Mar 24, 2015 8:06 pm    Post subject: Reply with quote

davidm,

System Rescue CD looks promising
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NeddySeagoon

Computer users fall into two groups:-
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davidm
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PostPosted: Tue Mar 24, 2015 8:10 pm    Post subject: Reply with quote

NeddySeagoon wrote:
davidm,

System Rescue CD looks promising


Neddy, Thanks. I think I recall looking at that but thought the btrfs-progs was too old. I'll look again. Maybe I missed something or they have a more recent version.
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davidm
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PostPosted: Tue Mar 24, 2015 8:17 pm    Post subject: Reply with quote

Thanks again Neddy. As usual you are correct. :)

It appears the beta version:

http://www.sysresccd.org/Beta-x86

might be a good bet or I could roll my own:

http://www.sysresccd.org/Sysresccd-manual-en_How_to_personalize_SystemRescueCd

The regular version appears to have kernel 3.14 and btrfs-progs-3.18.2 of which the kernel is probably too old but the btrfs-progs is okay.
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MarioCorleone
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PostPosted: Tue Mar 24, 2015 10:23 pm    Post subject: Reply with quote

systemrescuecd is the best tool you have to choose from.
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davidm
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PostPosted: Wed Mar 25, 2015 2:10 am    Post subject: Reply with quote

mario18 wrote:
systemrescuecd is the best tool you have to choose from.


Correct.

Just for anyone else with this question:

The systemrescuecd at http://www.sysresccd.org includes an option to use the alternate kernel from the boot menu. Typically that is the newer kernel you probably want to use. It appears right now even the stable release has an alternate 3.18.x kernel as does the beta. However the default version seems to be 3.14.x and that might not be a good idea for running a 'btrfs check' due to rapid bug fixes.
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