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seVes
n00b
Joined: 06 Jan 2011
Posts: 54
Location: Germany
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 Posted: Wed Dec 07, 2011 10:31 pm Post subject: fstab: noatime is unregarded for rootfs |
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hey!
i've got some troubles with my fstab.
I have a SSD and optimized my system for using that. Everthing succeeded, except mounting my rootfs ( / ) with noatime.
My /etc/fstab:
| Quote: | edge tmp # cat /etc/fstab
# /etc/fstab: static file system information.
#
# <fs> <mountpoint> <type> <opts> <dump/pass>
/dev/sda1 / ext4 data=writeback,noatime 0 0
#... |
The sda1 is always mountet with relatime:
| Quote: | edge tmp # mount
rootfs on / type rootfs (rw)
...
/dev/root on / type ext4 (rw,relatime,user_xattr,barrier=1,data=writeback)
edge tmp # cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,relatime,user_xattr,barrier=1,data=writeback 0 0
... |
Have tried setting the "noatime" with tune2fs, but it says:
| Quote: | edge tmp # tune2fs -o noatime /dev/sda1
tune2fs 1.41.14 (22-Dec-2010)
Invalid mount option set: noatime
edge tmp # tune2fs -O noatime /dev/sda1
tune2fs 1.41.14 (22-Dec-2010)
Invalid filesystem option set: noatime |
Whats wrong? How can i fix this? Is it possible?
Kind regards
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Alex / seVes |
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Veldrin
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Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Wed Dec 07, 2011 11:54 pm Post subject: |
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yes it is:
just add rootflags=noatime to you kernel line in grub.
if you are using genkernel, use real_rootflags=noatime
V.
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seVes
n00b
Joined: 06 Jan 2011
Posts: 54
Location: Germany
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| Posted: Thu Dec 08, 2011 2:19 pm Post subject: |
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Hey guy!
This doesn't work for me.
After adding rootflags=noatime to cmdline in menu.lst, i got a booterror on startup:
| Code: | REISERFS warning (device sda1): super-6502 reiserfs_getopt: unknown mount option "noatime"
EXT4-fs (sda1): Unrecognized mount option "noatime" or missing value |
Any ideas?
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Veldrin
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Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Sat Dec 10, 2011 10:01 am Post subject: |
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hmm - can you try something else.
close all not necessary programs before proceeding. this might end up in a lock up or unresponsive system.
run mount -o remount,noatime / from you running system.
This should remount root with the noatime flag.
V.
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seVes
n00b
Joined: 06 Jan 2011
Posts: 54
Location: Germany
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| Posted: Tue Dec 13, 2011 4:10 pm Post subject: |
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Hey...
mount -o remount,noatime works, everthing else not. Run tune2fs in a live-system for /dev/sda1 or something like else doesn't work.
Other ideas? Would like to fix it...
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Alex / seVes |
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Veldrin
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Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Wed Dec 14, 2011 1:04 am Post subject: |
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noatime is a mount options, not fs option. therefore tune2fs will not help much.
can you post your grub config (menu.lst or grub.cfg depending on version)?
maybe rootflags=noatime is not enough, and rootfstype=ext4 needs to be added too
V.
mine for reference (though i do neither use ext4 not noatime...)
| Code: | menuentry "3.1.4-gentoo-1 - Sneaky Weasel" --class gentoo --class gnu-linux --class gnu --class os {
load_video
insmod gzio
insmod part_gpt
insmod btrfs
set root='(/dev/sdc,gpt3)'
search --no-floppy --fs-uuid --set=root a89fc4fb-4dd8-49c3-a83e-ef9f9936df02
linux /boot/linux-3.1.4-gentoo-1 ro real_root=/dev/sdc3 crypt_swap=/dev/sdc2 swap_key=/gentoo/root/gswap.gpg swap_keydev=/dev/sdc3 resume=/dev/mapper/swap real_rootflags=subvol=gentoo,relatime real_rootfstype=btrfs acpi=on mce vbe resume scsi_mod.scan=sync
initrd /boot/initrd-3.1.4-gentoo-1
} |
| Code: | root@tijakool ~ # mount
rootfs on / type rootfs (rw)
...
/dev/sdc3 on / type btrfs (rw,relatime,nospace_cache,autodefrag)
... |
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seVes
n00b
Joined: 06 Jan 2011
Posts: 54
Location: Germany
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| Posted: Wed Dec 14, 2011 9:28 pm Post subject: |
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Here it are...
| Code: | edge alex # cat /boot/grub/menu.lst
default 0
fallback 1
timeout 5
splashimage (hd0,0)/boot/grub/lenovo.xpm.gz
title Gentoo - 3.1.5-gentoo (x11)
root (hd0,0)
kernel /boot/kernel-3.1.5-gentoo root=/dev/sda1 rw init 5 elevator=noop
title Gentoo - 3.1.5-gentoo (terminal)
root (hd0,0)
kernel /boot/kernel-3.1.5-gentoo root=/dev/sda1 rw init 3 elevator=noop nousb |
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Alex / seVes |
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mackrhea786
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Joined: 04 Feb 2013
Posts: 1
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| Posted: Mon Feb 04, 2013 8:21 am Post subject: |
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| Veldrin wrote: | yes it is:
just add rootflags=noatime to you kernel line in grub.
if you are using genkernel, use real_rootflags=noatime
V. |
yes its right answer. i am also face kernel regarding many problem but it is helpful. |
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Gentoo on AMD64
