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suspend2 w/ filewriter + lmv2 problem + genkernel [SOLVED]
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mrfree
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PostPosted: Mon Dec 05, 2005 2:43 pm    Post subject: suspend2 w/ filewriter + lmv2 problem + genkernel [SOLVED] Reply with quote

I'm trying to use suspend2 (suspend2-sources) using filewriter on my system (all partition on lvm2), the problem is... I don't known which device to use when resuming :)

Let me explain...
during the first hibernate run, the script suggests me to add
Code:
resume2=file:/dev/dm-0:0x44610
to my cmdline , and I've do that...
now my system go to sleep correctly (the state is stored in /suspend_file) but when I reboot the system started normally without resume anything... :(

The problem seems to be in the initrd image... I create it using genkernel with
Code:
genkernel --gensplash=livecd-2005.1 --gensplash-res=1024x768 --lvm2 --install --oldconfig all


I've read some suspend2 docs:
http://www.suspend2.net/HOWTO-7.html#ss7.4
http://www.suspend2.net/FAQ-6.html#ss6.4
http://wiki.suspend2.net/DistroAndHardwareSetup/DebianInitrd

and I found that genkernel inirtd image doesn't contain linuxrc file! So I've tryed to add a simple one
Code:
#!/bin/sh
echo > /proc/suspend2/do_resume

and this is the final result
Code:
[...] myinitrd # tree
.
|-- bin
|-- dev
|   |-- console
|   |-- null
|   `-- tty1
|-- etc
|   `-- fstab
|-- lib64 -> ../lib
|-- linuxrc
|-- proc
|-- sbin
|-- sys
|-- temp
|-- usr
|   |-- bin
|   `-- sbin
`-- var
    `-- lock
        `-- dmraid

13 directories, 6 files


The linuxrc script seems to be executed correctly during the boot process but suspend2 doesn't like it
Code:
[...] Missing or invalid storage location (resume2=...) [...]


Where is the mistake? :?:
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Last edited by mrfree on Tue Dec 13, 2005 10:01 am; edited 2 times in total
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mrfree
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PostPosted: Tue Dec 06, 2005 3:07 pm    Post subject: Reply with quote

Mhhhh no replay... :?

Probably I need to do some thing like this
Quote:
This requires Suspend2 2.1.4.2 or later.

1. You will need to use an initrd or initramfs support, so your kernel must have support for this.
2. Configure your LVM/encrypted swap/whatever like you normally would.
3. Modify your initrd/initramfs as follows:
* install a statically linked version of dmsetup
* install any dm modules needed for your configuration
* ensure that /dev, /dev/mapper, /proc and /sys exist on that filesystem
* create a link from /dev/mapper/<partition name> to /dev/dm-0:

ln -s /dev/mapper/<partition name> /dev/dm-0

* use dmsetup table <partition name> to store the configuration for your partition in a file on the initrd|ramfs.
* in your linuxrc/init:
o mount /proc
o load modules as required
o use dmsetup create dm-0 <path to config-file> to set up access to the LVM partition
o echo > /proc/suspend2/do_resume
o do any other actions required (mount rootfs if initramfs...)
o umount /proc if initrd.


My questions are...
Why the initrd image, build by genkernel, is a simple empty directories structure?
During the init this tree is probably filled... how?

I probably need to make an handmade initrd image, but... exists a genkernel patch for this? :)
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mrfree
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PostPosted: Tue Dec 13, 2005 10:00 am    Post subject: Reply with quote

Ok... I've readed genkernel, suspend2 and others documentations and finally I've made an howto ;)

Now all works well!!!

[HOWTO] suspend2 e filewriter su lvm2 (usando genkernel) (in Italian)
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devsk
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PostPosted: Mon Jun 26, 2006 1:31 am    Post subject: Reply with quote

any translated howto? I am trying to use suspend2 with dmraid (nvraid) and same issue.
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