billyblackburn/Gentoo stuff

## audio stuff
https://forums.gentoo.org/viewtopic-t-1083000-start-0.html
2 audio streams simultaeneously

## file layout_backup
d3z: With gentoo, restoring from an rsync or similar mirror is pretty easy. You can just
  use the handbook but instead of unpacking a stage tarball, you copy the mirror onto
  the volume, and then follow the steps to make it bootable.
d3z: It's good to print out partition tables and stuff to make it easy to restore that
  on a new drive.

tlhonmey: tertl3: to restore you'd decompress piped to dd and put it back on the disk.

[01:26]     tertl3: d3z: what about something like this
[01:27]        d3z: I use a combination of external USB drives, and Amazon S3.
[01:27]     tertl3: rsync -av --delete /dev/sda /dev/sdb
[01:27]        d3z: I would use rsync on the mounted filesystems, not the raw devices.
[01:28]        d3z: You want something like `rsync -aHAX --delete /source/path/ /target/path/`
[01:28]        d3z: The trailing slash is very important on the paths.

tertl3@tux ~ $ lsblk

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 931.5G  0 disk
├─sda1   8:1    0     2M  0 part
├─sda2   8:2    0   128M  0 part /boot
├─sda3   8:3    0   512M  0 part [SWAP]
└─sda4   8:4    0 930.9G  0 part /

tertl3@tux ~ $ fdisk -l /dev/sda

Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD1001FAES-7
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 175D0307-DE4B-4406-BBD8-AE715FCAF57D

Device       Start        End    Sectors   Size Type
/dev/sda1     2048       6143       4096     2M BIOS boot
/dev/sda2     6144     268287     262144   128M EFI System
/dev/sda3   268288    1316863    1048576   512M Linux filesystem
/dev/sda4  1316864 1953523119 1952206256 930.9G Linux filesystem

d3z: To back up root, I usually use a bind mount:  `mkdir /mnt/root; mount --bind /
/mnt/root; ... (backup) ...; umount /mnt/root`

d3z: This way it can backup the things that are "under" various mountpoints, especially
                    `/dev`


[16:06] +   iamben: i'd do something like:  "mkdir /mnt/bind && mount -o bind / /mnt/bind" tobind mount rootfs.  then "cd /mnt/bind && tar -cJf /rootfs-backup.tar.xz *"
[16:07] +   iamben: set XZ_OPTS="-T5" in yoru environment if you want it to use 5 threads

[16:08]   tlhonmey: Or more since you have 10 cores.

[16:09]     tertl3: im a bit confused about where to add to my environment
[16:09] +   iamben: you can either 'export XZ_OPTS="-T5"' in the shell to set it for this whole session, or

[16:10] +   iamben: just put it right before the tar command like:    XZ_OPTS="-T5" tar -cJf /rootfs-....

to restore

[16:01] +   iamben: 'tar -xvpf /rootfs-backup.tar.xz -C /'   or similar
[16:03]     tertl3: okay
[16:04] +   iamben: your tar command should also have   --xattrs --xattrs-include="*.*" for best results

## Gentoo stuff

iamben: copy the old config into the new source dir, and make oldconfig
tlhonmey: Also turning on the bit about storing a copy if the config in the kernel and making it
                    accessible via /proc/config.gz is a handy way to keep from losing your config.

tertl3: emerge -auvDU --jobs 4 --quiet-build=y --complete-graph=y --verbose-conflicts @world
emerge -avuDN @world
emerge --sync && emerge @world -uvDNa

//grub-install --target=i386-pc
//if /sys/firmware/efi has stuff in it, you're booted in UEFI mode
wgetpaste -c 'emerge -vp musique'
wgetpaste -c "anycommandyoulike"

/etc/conf.d/xdm to set DISPLAYMANAGER="sddm" then do "rc-service xdm start"

[19:56] <+wraeth> tertl3_: After enabling SND_HDA_INTEL in the kernel, there should be some additional options for various codecs related to it. You need the codec appropriate for your card (but you can enable all of them as they're trivially small).
[19:56] <wokko> tertl3_: check 'aplay -l' if nothing check kernel for youe sound card/codec
[19:57] <+wraeth> tertl3_: After updating the kernel config, don't forget to build it, install it and the modules, regen any initramfs you might have, and reboot into it.
[19:57] <+wraeth> tertl3_: Also wokko's advice (he's far better with sound that I ;) )


 * - media-fonts/arphicfonts
 * - media-fonts/droid
 * - media-fonts/ipamonafont
 * - media-fonts/noto
 * - media-fonts/ja-ipafonts
 * - media-fonts/takao-fonts
 * - media-fonts/wqy-microhei
 * - media-fonts/wqy-zenhei


-U will skip rebuilds in certain specific cases where
                it might not be strictly required

[12:51] +   iamben: tertl3: you need xdm.eclass provided by whatever overlay that ebuild came from
[12:51] +   iamben: probably should just enable the whole overlay
[12:52]     tertl3: iamben: it hasnt been touched in years
[12:53] +   iamben: you'll probably wanna look at what it's actually using that eclass for, and implement it some other way


[18:17] Viperlin: i use
[18:17] Viperlin: #!/bin/bash
[18:17] Viperlin: echo "sync? y/n"
[18:17] Viperlin: read PEE
[18:17] Viperlin: if [ "$PEE" = "y" ]; then
[18:17] Viperlin: eix-sync && emerge world -uNvDat --keep-going && revdep-rebuild --
                  --keep-going && emerge @preserved-rebuild
[18:17] Viperlin: else
[18:17] Viperlin: echo "no sync :("
[18:17] Viperlin: emerge world -uNvDat --keep-going && revdep-rebuild -- --keep-going &&
                  emerge @preserved-rebuild
[18:17] Viperlin: fi
[18:17] Viperlin: as emerge-updates.sh
[18:17] Viperlin: but might be a better way!


## make.conf
 These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
COMMON_FLAGS="-march=native -O2 -pipe"
CFLAGS="${COMMON_FLAGS}"
CXXFLAGS="${COMMON_FLAGS}"
FCFLAGS="${COMMON_FLAGS}"
FFLAGS="${COMMON_FLAGS}"
MAKEOPTS="-j6"


# NOTE: This stage was built with the bindist Use flag enabled
# 11:31 <+iamben> that bindist comment is unrelated to those^
# 11:31 < tertl3> oh
# 11:31 <+iamben> PORTDIR is an obsolete var, replaced by the settings in repos.conf ... the other 2 vars there match the default so they are not really needed
# PORTDIR="/usr/portage"
# DISTDIR="/usr/portage/distfiles"
# PKGDIR="/usr/portage/packages"


USE="-gpm icu alsa pulseaudio"
# This sets the language of build output to English.
# Please keep this setting intact when reporting bugs.
LC_MESSAGES=C

GENTOO_MIRRORS="http://www.gtlib.gatech.edu/pub/gentoo rsync://rsync.gtlib.gatech.edu/gentoo ftp://mirrors.rit.edu/gentoo/ rsync://mirrors.rit.edu/gentoo/"
	https://forums.gentoo.org/viewtopic-t-1083000-start-0.html
	2 audio streams simultaeneously
	d3z: With gentoo, restoring from an rsync or similar mirror is pretty easy. You can just
	use the handbook but instead of unpacking a stage tarball, you copy the mirror onto
	the volume, and then follow the steps to make it bootable.
	d3z: It's good to print out partition tables and stuff to make it easy to restore that
	on a new drive.

	tlhonmey: tertl3: to restore you'd decompress piped to dd and put it back on the disk.

	[01:26] tertl3: d3z: what about something like this
	[01:27] d3z: I use a combination of external USB drives, and Amazon S3.
	[01:27] tertl3: rsync -av --delete /dev/sda /dev/sdb
	[01:27] d3z: I would use rsync on the mounted filesystems, not the raw devices.
	[01:28] d3z: You want something like `rsync -aHAX --delete /source/path/ /target/path/`
	[01:28] d3z: The trailing slash is very important on the paths.

	tertl3@tux ~ $ lsblk

	NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
	sda 8:0 0 931.5G 0 disk
	├─sda1 8:1 0 2M 0 part
	├─sda2 8:2 0 128M 0 part /boot
	├─sda3 8:3 0 512M 0 part [SWAP]
	└─sda4 8:4 0 930.9G 0 part /

	tertl3@tux ~ $ fdisk -l /dev/sda

	Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
	Disk model: WDC WD1001FAES-7
	Units: sectors of 1 * 512 = 512 bytes
	Sector size (logical/physical): 512 bytes / 512 bytes
	I/O size (minimum/optimal): 512 bytes / 512 bytes
	Disklabel type: gpt
	Disk identifier: 175D0307-DE4B-4406-BBD8-AE715FCAF57D

	Device Start End Sectors Size Type
	/dev/sda1 2048 6143 4096 2M BIOS boot
	/dev/sda2 6144 268287 262144 128M EFI System
	/dev/sda3 268288 1316863 1048576 512M Linux filesystem
	/dev/sda4 1316864 1953523119 1952206256 930.9G Linux filesystem

	d3z: To back up root, I usually use a bind mount: `mkdir /mnt/root; mount --bind /
	/mnt/root; ... (backup) ...; umount /mnt/root`

	d3z: This way it can backup the things that are "under" various mountpoints, especially
	`/dev`





	[16:06] + iamben: i'd do something like: "mkdir /mnt/bind && mount -o bind / /mnt/bind" tobind mount rootfs. then "cd /mnt/bind && tar -cJf /rootfs-backup.tar.xz *"
	[16:07] + iamben: set XZ_OPTS="-T5" in yoru environment if you want it to use 5 threads

	[16:08] tlhonmey: Or more since you have 10 cores.

	[16:09] tertl3: im a bit confused about where to add to my environment
	[16:09] + iamben: you can either 'export XZ_OPTS="-T5"' in the shell to set it for this whole session, or

	[16:10] + iamben: just put it right before the tar command like: XZ_OPTS="-T5" tar -cJf /rootfs-....

	to restore

	[16:01] + iamben: 'tar -xvpf /rootfs-backup.tar.xz -C /' or similar
	[16:03] tertl3: okay
	[16:04] + iamben: your tar command should also have --xattrs --xattrs-include="." for best results

	iamben: copy the old config into the new source dir, and make oldconfig
	tlhonmey: Also turning on the bit about storing a copy if the config in the kernel and making it
	accessible via /proc/config.gz is a handy way to keep from losing your config.

	tertl3: emerge -auvDU --jobs 4 --quiet-build=y --complete-graph=y --verbose-conflicts @world
	emerge -avuDN @world
	emerge --sync && emerge @world -uvDNa

	//grub-install --target=i386-pc
	//if /sys/firmware/efi has stuff in it, you're booted in UEFI mode
	wgetpaste -c 'emerge -vp musique'
	wgetpaste -c "anycommandyoulike"

	/etc/conf.d/xdm to set DISPLAYMANAGER="sddm" then do "rc-service xdm start"

	[19:56] <+wraeth> tertl3_: After enabling SND_HDA_INTEL in the kernel, there should be some additional options for various codecs related to it. You need the codec appropriate for your card (but you can enable all of them as they're trivially small).
	[19:56] <wokko> tertl3_: check 'aplay -l' if nothing check kernel for youe sound card/codec
	[19:57] <+wraeth> tertl3_: After updating the kernel config, don't forget to build it, install it and the modules, regen any initramfs you might have, and reboot into it.
	[19:57] <+wraeth> tertl3_: Also wokko's advice (he's far better with sound that I ;) )


	* - media-fonts/arphicfonts
	* - media-fonts/droid
	* - media-fonts/ipamonafont
	* - media-fonts/noto
	* - media-fonts/ja-ipafonts
	* - media-fonts/takao-fonts
	* - media-fonts/wqy-microhei
	* - media-fonts/wqy-zenhei


	-U will skip rebuilds in certain specific cases where
	it might not be strictly required

	[12:51] + iamben: tertl3: you need xdm.eclass provided by whatever overlay that ebuild came from
	[12:51] + iamben: probably should just enable the whole overlay
	[12:52] tertl3: iamben: it hasnt been touched in years
	[12:53] + iamben: you'll probably wanna look at what it's actually using that eclass for, and implement it some other way


	[18:17] Viperlin: i use
	[18:17] Viperlin: #!/bin/bash
	[18:17] Viperlin: echo "sync? y/n"
	[18:17] Viperlin: read PEE
	[18:17] Viperlin: if [ "$PEE" = "y" ]; then
	[18:17] Viperlin: eix-sync && emerge world -uNvDat --keep-going && revdep-rebuild --
	--keep-going && emerge @preserved-rebuild
	[18:17] Viperlin: else
	[18:17] Viperlin: echo "no sync :("
	[18:17] Viperlin: emerge world -uNvDat --keep-going && revdep-rebuild -- --keep-going &&
	emerge @preserved-rebuild
	[18:17] Viperlin: fi
	[18:17] Viperlin: as emerge-updates.sh
	[18:17] Viperlin: but might be a better way!
	These settings were set by the catalyst build script that automatically
	# built this stage.
	# Please consult /usr/share/portage/config/make.conf.example for a more
	# detailed example.
	COMMON_FLAGS="-march=native -O2 -pipe"
	CFLAGS="${COMMON_FLAGS}"
	CXXFLAGS="${COMMON_FLAGS}"
	FCFLAGS="${COMMON_FLAGS}"
	FFLAGS="${COMMON_FLAGS}"
	MAKEOPTS="-j6"




	# NOTE: This stage was built with the bindist Use flag enabled
	# 11:31 <+iamben> that bindist comment is unrelated to those^
	# 11:31 < tertl3> oh
	# 11:31 <+iamben> PORTDIR is an obsolete var, replaced by the settings in repos.conf ... the other 2 vars there match the default so they are not really needed
	# PORTDIR="/usr/portage"
	# DISTDIR="/usr/portage/distfiles"
	# PKGDIR="/usr/portage/packages"


	USE="-gpm icu alsa pulseaudio"
	# This sets the language of build output to English.
	# Please keep this setting intact when reporting bugs.
	LC_MESSAGES=C

	GENTOO_MIRRORS="http://www.gtlib.gatech.edu/pub/gentoo rsync://rsync.gtlib.gatech.edu/gentoo ftp://mirrors.rit.edu/gentoo/ rsync://mirrors.rit.edu/gentoo/"