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todd93
l33t
Joined: 30 Oct 2006
Posts: 620
Location: Missouri
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 Posted: Mon Oct 21, 2013 10:06 am Post subject: Separate /usr on Linux requires initramfs question [SOLVED] |
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Hi, I apologize if this question annoys anyone, but I am quite confused on this subject. I have neglected my install and haven't updated in a while. When this came up in the news yesterday, I have been trying to search out an answer to this. I don't think I have / and /usr on separate file systems, but I'm not sure. I was hoping someone could tell me exactly what it is I need to do to make my gentoo install happy. I did look at the wiki, but it just confused me further. Here is my fstab just for information purposes:
| Code: |
# <partition> <mountpoint> <type> <opts> <dump/pass>
/dev/sdb1 /boot ext3 defaults,noatime 1 2
/dev/sdb2 none swap sw 0 0
/dev/sdb3 / ext3 noatime 0 1
/dev/sr1 /mnt/cdrom auto noauto$
/dev/sda2 /mnt/windows ntfs-3g defaults,rw,user,umask=0 0 0
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I would appreciate any and all help I can get.
Thanks!
Todd
Last edited by todd93 on Fri Oct 25, 2013 12:23 pm; edited 1 time in total |
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anbc
n00b
Joined: 26 Jul 2013
Posts: 47
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| Posted: Mon Oct 21, 2013 10:19 am Post subject: |
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issue the following command in a terminal window to see your mount points
| Code: | | # mount | column -t |
Here is an example of some output
| Code: | /dev/sda on / type btrfs (rw,noatime,ssd,space_cache)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,size=3289304k,mode=755)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=4111250,mode=755)
cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /sys/fs/cgroup/openrc type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc)
cpuset on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
cpuacct on /sys/fs/cgroup/cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct)
freezer on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
bfqio on /sys/fs/cgroup/bfqio type cgroup (rw,nosuid,nodev,noexec,relatime,bfqio)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
/dev/sdb on /home type btrfs (rw,noatime,subvol=HOME)
tmpfs on /tmp type tmpfs (rw,noatime,nodiratime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nodev,noexec,nosuid) |
You can see that /usr is not explicitly mounted on a separate partition.
If your /usr is not on a separate partition then no changes need to be made to your system (if I have understood your question) |
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SamuliSuominen
Retired Dev
Joined: 30 Sep 2005
Posts: 2133
Location: Finland
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| Posted: Mon Oct 21, 2013 11:33 am Post subject: |
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| anbc wrote: | issue the following command in a terminal window to see your mount points
| Code: | | # mount | column -t |
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Nice use of column. Somehow it never occured to me before. Thanks. |
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anbc
n00b
Joined: 26 Jul 2013
Posts: 47
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| Posted: Mon Oct 21, 2013 2:47 pm Post subject: |
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| Quote: | | Nice use of column. Somehow it never occured to me before. Thanks. |
No prob! I love finding tidbits like this, too. |
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todd93
l33t
Joined: 30 Oct 2006
Posts: 620
Location: Missouri
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| Posted: Tue Oct 22, 2013 9:43 am Post subject: |
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| anbc wrote: | issue the following command in a terminal window to see your mount points
| Code: | | # mount | column -t |
Here is an example of some output
| Code: | /dev/sda on / type btrfs (rw,noatime,ssd,space_cache)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,size=3289304k,mode=755)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=4111250,mode=755)
cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /sys/fs/cgroup/openrc type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc)
cpuset on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
cpuacct on /sys/fs/cgroup/cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct)
freezer on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
bfqio on /sys/fs/cgroup/bfqio type cgroup (rw,nosuid,nodev,noexec,relatime,bfqio)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
/dev/sdb on /home type btrfs (rw,noatime,subvol=HOME)
tmpfs on /tmp type tmpfs (rw,noatime,nodiratime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nodev,noexec,nosuid) |
You can see that /usr is not explicitly mounted on a separate partition.
If your /usr is not on a separate partition then no changes need to be made to your system (if I have understood your question) |
Thank you so much, this is what I love about Gentoo, the little tricks that you can use to find out what you need! here's the output of mount points:
| Code: |
# mount | column -t
rootfs on / type rootfs (rw)
/dev/sdb3 on / type ext3 (rw,noatime,commit=0)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=490391,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /sys/fs/cgroup/openrc type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc)
cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
/dev/sdb1 on /boot type ext3 (rw,noatime,commit=0)
/dev/sda2 on /mnt/windows type fuseblk (rw,nosuid,nodev,noexec,allow_other,blksize=4096,default_permissions)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nodev,noexec,nosuid)
usbfs on /proc/bus/usb type usbfs (rw,noexec,nosuid,devmode=0664,devgid=85)
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cwr
Veteran
Joined: 17 Dec 2005
Posts: 1969
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| Posted: Tue Oct 22, 2013 10:41 am Post subject: |
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Won't df tell you?
Will |
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todd93
l33t
Joined: 30 Oct 2006
Posts: 620
Location: Missouri
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| Posted: Wed Oct 23, 2013 9:42 am Post subject: |
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| cwr wrote: | Won't df tell you?
Will |
what's df? |
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ulenrich
Veteran
Joined: 10 Oct 2010
Posts: 1480
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| Posted: Wed Oct 23, 2013 10:19 am Post subject: |
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man 1 df
will tell you if you have
| Code: | $ equery b $(which df)
* Searching for /bin/df ...
sys-apps/coreutils-8.21 (/bin/df) |
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todd93
l33t
Joined: 30 Oct 2006
Posts: 620
Location: Missouri
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| Posted: Thu Oct 24, 2013 9:52 am Post subject: |
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| ulenrich wrote: | man 1 df
will tell you if you have
| Code: | $ equery b $(which df)
* Searching for /bin/df ...
sys-apps/coreutils-8.21 (/bin/df) |
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oh, okay, gotcha, and yes it does, thank you!
| Code: |
# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 960309992 97152724 814376300 11% /
/dev/root 960309992 97152724 814376300 11% /
tmpfs 1994768 668 1994100 1% /run
udev 10240 0 10240 0% /dev
shm 1994768 192 1994576 1% /dev/shm
cgroup_root 10240 0 10240 0% /sys/fs/cgroup
/dev/sdb1 108865 90759 12485 88% /boot
/dev/sda2 976657404 718062164 258595240 74% /mnt/windows
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ulenrich
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Joined: 10 Oct 2010
Posts: 1480
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| Posted: Thu Oct 24, 2013 12:15 pm Post subject: |
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You can boot linux without an initrd, if you have all compiled into the kernel needed to mount / (root partition) , because you don't have any seperate /usr, which one could see looking at your /etc/fstab. But I didn't want to miss the chance of RTFM regarding df  |
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