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bjlockie
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Location: Canada
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 Posted: Tue Jun 12, 2012 12:51 pm Post subject: /dev/sdc1 changes to /dev/sda2 |
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I'm trying to move my install from /sda2 to my ssd drive on /dev/sdc1
I also want to move /var/tmp to ram but that doesn't work.
$ more /etc/fstab
/dev/sda1 /boot ext2 noauto,noatime 0 2
/dev/sda2 /home ext4 defaults,auto,noatime 0 1
/dev/sdc1 / ext4 defaults,auto,noatime,discard 0 1
/dev/sdb1 /media/storage ext4 defaults,auto,noatime 0 2
tmpfs /var/tmp tmpfs size=1G 0 0
tmpfs /tmp tmpfs size=1G 0 0
shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
$ mount
/dev/sda2 on / type ext4 (rw,noatime,discard,commit=0)
/dev/sdb1 on /storage type ext4 (rw,noatime)
/dev/sdb1 on /media/storage type ext4 (rw,noatime,commit=0)
/dev/sda2 on /home type ext4 (rw,noatime)
tmpfs on /tmp type tmpfs (rw,size=1G)
shm on /dev/shm type tmpfs (rw,noexec,nosuid,nodev)
/dev/sdb1 on /storage type ext4 (rw,noatime)
$ dmesg | grep sd
Command line: root=/dev/sdc1
Kernel command line: root=/dev/sdc1
sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2
sd 0:0:0:0: [sda] Attached SCSI disk
sd 1:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdb: sdb1
sd 1:0:0:0: [sdb] Attached SCSI disk
sd 4:0:0:0: [sdc] 175836528 512-byte logical blocks: (90.0 GB/83.8 GiB)
sd 4:0:0:0: [sdc] Write Protect is off
sd 4:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdc: sdc1
sd 4:0:0:0: [sdc] Attached SCSI disk
EXT4-fs (sdc1): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (sdc1): couldn't mount as ext2 due to feature incompatibilities
EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (sdc1): re-mounted. Opts: discard
EXT4-fs (sda2): re-mounted. Opts: (null)
EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
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Veldrin
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Joined: 27 Jul 2004
Posts: 1931
Location: Zurich, Switzerland
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| Posted: Tue Jun 12, 2012 1:28 pm Post subject: |
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what exactly fails? what is the error message?
and try one step at a time.
both tmp directories need special permission: 1777 or rwxrwxrwt
| Code: | tmpfs /var/tmp tmpfs size=1G,mode=1777 0 0
tmpfs /tmp tmpfs size=1G,mode=1777 0 0 |
you said you wanted to move your root fs. how did you move it?
for such a move, i usually boot into a livecd environment to be sure that the rootfs does not change.
the errors further down come from a missing kernel argument: rootfstype=ext4
V.
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bjlockie
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Joined: 18 Oct 2002
Posts: 1172
Location: Canada
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| Posted: Tue Jun 12, 2012 10:34 pm Post subject: |
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| Veldrin wrote: | what exactly fails? what is the error message?
and try one step at a time.
both tmp directories need special permission: 1777 or rwxrwxrwt
| Code: | tmpfs /var/tmp tmpfs size=1G,mode=1777 0 0
tmpfs /tmp tmpfs size=1G,mode=1777 0 0 |
you said you wanted to move your root fs. how did you move it?
for such a move, i usually boot into a livecd environment to be sure that the rootfs does not change.
the errors further down come from a missing kernel argument: rootfstype=ext4
V. |
I did a cp -ar from my old root to the new one.
It mostly works. 
I fixed the /tmp permissions like you said.
I'd like to put /var in ram (at least /var/run).
The biggest thing left is mount thinks my / is /dev/sda2 and it should be /dev/sdc1.
It IS using /dev/sdc1 though, it's weird.
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AMD FX6100 CPU, 16 GiB RAM, OCZ Vertex 3 SSD
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Galaxy-NVidia GeForce 8800GT video card, Cyber Power CP550HG USB UPS |
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Veldrin
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Location: Zurich, Switzerland
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| Posted: Wed Jun 13, 2012 12:57 pm Post subject: |
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| Quote: | | I'd like to put /var in ram (at least /var/run). |
putting /var in a tmpfs is next to impossible (ok, squashfs + loop might be a solution), as var contains variable data for various daemons, the entire gentoo system config (what packages are installed.)
/var/run should be automatically put on a ramdisk/tmpfs by openrc - at least i never changed any config, and it always worked.
for you root problem.
could you post you grub config? I am specifically interested in the root= or real_root= argument.
V.
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bjlockie
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Location: Canada
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| Posted: Wed Jun 13, 2012 11:51 pm Post subject: |
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| Veldrin wrote: | | Quote: | | I'd like to put /var in ram (at least /var/run). |
putting /var in a tmpfs is next to impossible (ok, squashfs + loop might be a solution), as var contains variable data for various daemons, the entire gentoo system config (what packages are installed.)
/var/run should be automatically put on a ramdisk/tmpfs by openrc - at least i never changed any config, and it always worked.
for you root problem.
could you post you grub config? I am specifically interested in the root= or real_root= argument.
V. |
title Gentoo Linux
root (hd0,0)
kernel /boot/bzImage root=/dev/sdc1
savedefault
I wonder if it is udev?
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AMD FX6100 CPU, 16 GiB RAM, OCZ Vertex 3 SSD
ASRock 970 Extreme3 motherboard with S/PDIF audio
Galaxy-NVidia GeForce 8800GT video card, Cyber Power CP550HG USB UPS |
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Veldrin
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Joined: 27 Jul 2004
Posts: 1931
Location: Zurich, Switzerland
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| Posted: Thu Jun 14, 2012 8:02 am Post subject: |
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you grub config looks correct, and a fallback entry would only match if there was an error.
I doubt, that it is an udev issue, as the /root gets mounted long before udev is started.
are you sure, you updated the fstab on the ssd? though i doubt that the init-scripts/openrc mount first mount one rootfs then switch to another...
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HeissFuss
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Joined: 11 Jan 2005
Posts: 400
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| Posted: Fri Jun 15, 2012 1:01 am Post subject: |
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You should probably use UUIDs in fstab instead of sd device names anyway since those don't change.
You can get them from 'blkid' and the fstab syntax is 'UUID="your filesystem uuid" /mount/point/ ext4 etc' |
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bjlockie
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Posts: 1172
Location: Canada
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| Posted: Sat Jun 16, 2012 3:18 am Post subject: |
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| HeissFuss wrote: | You should probably use UUIDs in fstab instead of sd device names anyway since those don't change.
You can get them from 'blkid' and the fstab syntax is 'UUID="your filesystem uuid" /mount/point/ ext4 etc' |
I changed it to UUIDs but I had to mount /storage and mount /home.
There were no errors and mount thinks it mounted but there were no files in it.
# mount
/dev/sda2 on / type ext4 (rw,noatime,discard,commit=0)
/dev/sdb1 on /storage type ext4 (rw,noatime)
/dev/sdb1 on /media/storage type ext4 (rw,noatime,commit=0)
/dev/sda2 on /home type ext4 (rw,noatime,commit=0)
/dev/sda2 on /var type ext4 (rw,noatime,commit=0)
/dev/sdb1 on /storage type ext4 (rw,noatime)
tmpfs on /tmp type tmpfs (rw,size=4G,mode=1777)
shm on /dev/shm type tmpfs (rw,noexec,nosuid,nodev)
/dev/sdb1 on /storage type ext4 (rw,noatime,commit=0)
/dev/sda2 on /home type ext4 (rw,noatime,commit=0)
# df
df: '/media/storage': No such file or directory
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 87773488 9901824 73475804 12% /
/dev/sdb1 480647488 275469428 180758860 61% /storage
/dev/sda2 487820492 130588556 332813136 29% /home
/dev/sda2 87773488 9901824 73475804 12% /var
/dev/sdb1 480647488 275469428 180758860 61% /storage
tmpfs 4194304 56 4194248 1% /tmp
shm 8165176 0 8165176 0% /dev/shm
/dev/sdb1 480647488 275469428 180758860 61% /storage
/dev/sda2 487820492 130588556 332813136 29% /home
UUID="a82c245a-5323-4eda-a094-fa2de81721a5" /boot ext2 noauto,noatime 0 2
UUID="743d709c-766c-477a-a892-65808cae645d" /home ext4 defaults,auto,noatime 0 1
UUID="743d709c-766c-477a-a892-65808cae645d" /var ext4 defaults,auto,noatime 0 1
UUID="e2647271-08fb-4af5-9a6f-11283a521bbd" / ext4 defaults,auto,noatime,discard 0 1
UUID="b7c60eb6-5501-4f1e-9c05-a416770cc32f" /storage ext4 defaults,auto,noatime 0 2
# use a ram disk for portage and /tmp
tmpfs /tmp tmpfs size=4G,mode=1777 0 0
/media/storage must be cached somewhere because it is an old mount point.
_________________
AMD FX6100 CPU, 16 GiB RAM, OCZ Vertex 3 SSD
ASRock 970 Extreme3 motherboard with S/PDIF audio
Galaxy-NVidia GeForce 8800GT video card, Cyber Power CP550HG USB UPS |
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bjlockie
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Posts: 1172
Location: Canada
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| Posted: Sun Jun 17, 2012 5:37 pm Post subject: |
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$ df
df: '/media/storage': No such file or directory
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 87773488 9382636 73994992 12% /
/dev/sdb1 480647488 236183452 220044836 52% /storage
/dev/sda2 487820492 115553208 347848484 25% /home
/dev/sda2 487820492 115553208 347848484 25% /var
/dev/sdb1 480647488 236183452 220044836 52% /storage
/dev/sda2 487820492 115553208 347848484 25% /other
tmpfs 4194304 1446860 2747444 35% /tmp
shm 8165176 0 8165176 0% /dev/shm
/dev/sdb1 480647488 236183452 220044836 52% /storage
$ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,noatime,discard,data=ordered 0 0
devtmpfs /dev devtmpfs rw,relatime,size=8164956k,nr_inodes=2041239,mode=755 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /run tmpfs rw,nosuid,nodev,relatime,mode=755 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
configfs /sys/kernel/config configfs rw,nosuid,nodev,noexec,relatime 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
shm /dev/shm tmpfs rw,nosuid,nodev,noexec,relatime 0 0
/dev/sda2 /other ext4 rw,noatime,data=ordered 0 0
tmpfs /tmp tmpfs rw,relatime,size=4194304k 0 0
shm /dev/shm tmpfs rw,nosuid,nodev,noexec,relatime 0 0
/dev/sdb1 /storage ext4 rw,noatime,data=ordered 0 0
$ mount
/dev/sda2 on / type ext4 (rw,noatime,discard,commit=0)
/dev/sdb1 on /storage type ext4 (rw,noatime)
/dev/sdb1 on /media/storage type ext4 (rw,noatime,commit=0)
/dev/sda2 on /home type ext4 (rw,noatime,commit=0)
/dev/sda2 on /var type ext4 (rw,noatime,commit=0)
/dev/sdb1 on /storage type ext4 (rw,noatime)
/dev/sda2 on /other type ext4 (rw,noatime,commit=0)
tmpfs on /tmp type tmpfs (rw,size=4G,mode=1777)
shm on /dev/shm type tmpfs (rw,noexec,nosuid,nodev)
/dev/sdb1 on /storage type ext4 (rw,noatime)
_________________
AMD FX6100 CPU, 16 GiB RAM, OCZ Vertex 3 SSD
ASRock 970 Extreme3 motherboard with S/PDIF audio
Galaxy-NVidia GeForce 8800GT video card, Cyber Power CP550HG USB UPS |
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Installing Gentoo
