How to insert noatime in /etc/fstab CentOS 7? - linux

this is my /etc/fstab file:
proc /proc proc defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
sysfs /sys sysfs defaults 0 0
/dev/md/0 none swap sw 0 0
/dev/md/1 /boot ext3 defaults 0 0
/dev/md/2 / ext4 usrjquota=quota.user,jqfmt=vfsv0 0 0
How to enable noatime? I do not know exactly where to insert the string.
I think that is:
/dev/md/1 /boot ext3 defaults,noatime 0 0
That´s right? or Is in dev/md/2?
Many thanks.

Yes, that would work. But it makes more sense to delete the defaults placeholder when you add it:
/dev/md/1 /boot ext3 noatime 0 0
You probably care more about adding that mount option to slash, though:
/dev/md/2 / ext4 usrjquota=quota.user,jqfmt=vfsv0,noatime 0 0

Related

(linux) gzip fails with No space left on device

I need to compress a directory on my Ubuntu server. The directory is about 3.2 Go, and I have 15 Go left over 20 Go available on my server.
I'm using the command: tar -zcvf test src_directory
The command fails with the message:
gzip: stdout: No space left on device
tar: test: Wrote only 6144 of 10240 bytes
tar: Child returned status 1
tar: Error is not recoverable: exiting now
Why is it failing as I have enough space on my server ? (15 Go should be enough)
thanks
EDIT
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 463M 0 463M 0% /dev
tmpfs 98M 2.2M 96M 3% /run
/dev/xvda1 20G 17G 2.2G 89% /
tmpfs 490M 0 490M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 490M 0 490M 0% /sys/fs/cgroup
tmpfs 24K 0 24K 0% /var/gandi
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 202:0 0 20G 0 disk
└─xvda1 202:1 0 20G 0 part /
xvdz 202:6400 0 512M 0 disk
├─xvdz1 202:6401 0 502M 0 part [SWAP]
└─xvdz2 202:6402 0 10M 0 part
with df, I can see there is only 2.2G left on the disk. How can I have details about what is taking so much space ? Because I know that my application files only take 4.6G.
thanks
Check whether you have enough memory available on the partition you want the archive to be stored in
$: df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 476G 300G 176G 63% /
Also check if you have the permissions necessary to archive the desired directory.
If the problem still persists, I may suggest a filesystem check
$: lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 698.7G 0 disk
├─sda1 8:1 0 500M 0 part /boot
├─sda2 8:2 0 5.8G 0 part [SWAP]
├─sda3 8:3 0 50G 0 part /
├─sda4 8:4 0 1K 0 part
└─sda5 8:5 0 642.4G 0 part /home
# Find the device that matches the mountpoint of the directory in question
# Replace X with the appropriate device
# Replace Y with the appropriate partition
$: sudo fsck -vcck /dev/sdXY

How change the filesystem or all catalog /etc/ from RO-ReadOnly to RW?

I have a question I have a RO filesystem that is readonly. What I need to change in the file fstab in order to be able to edit system files or the all /etc/ directory editing. I can edit only fstab.
fstab file:
/etc # cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount pt> <type> <options> <dump> <pass>
/dev/root / ext2 rw,noauto 0 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts defaults,gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs mode=0777 0 0
tmpfs /tmp tmpfs defaults 0 0
sysfs /sys sysfs defaults 0 0
I do not know much about Linux, so I will be grateful for your help.
Try the following version and it should work independent of the contents of /etc/fstab:
mount -o remount,rw /dev/xxxx /
Instead of /dev/xxxx, use whatever device is valid for your drive.

mount: / not mounted or bad option

I'm running a custom Raspbmc build on my raspberry pi.
On startup, I always see the message
mount: / not mounted or bad option
The filesystem is still mounted, but still want to know whats causing the trouble.
my /etc/fstab looks like this:
proc /proc proc defaults,noatime,nodiratime 0 0
devpts /dev/pts devpts rw,nosuid,noatime,nodiratime,gid=5,mode=620 0 0
/dev/mmcblk0p1 /boot vfat ro,noatime,nosuid,nodiratime 0 0
UUID=7e790ee3-660b-46ab-8378-d8ea91730162 / ext4 defaults,data=writeback,nobh,nodiratime,noatime 0 0
tmpfs /home/pi/.xbmc/temp tmpfs rw,size=5M,nosuid,noexec,nodev,noatime,nodiratime,gid=1000,uid=1000 0 0
/tmp /var/tmp none rw,noexec,nosuid,nodev,bind 0 0
I would add "errors=remount-ro" after
ext4 default,errore=remount-ro,...
Just try to edit this, let me know-

Setfacl configuration issue in Linux

I am configuring a Linux Server with ACL[Access Control Lists]. It is not allowing me to perform setfacl operation on one of the directoriy /xfiles. I am able to perform the setfacl on other directories as /tmp /op/applocal/. I am getting the error as :
root#asifdl01devv # setfacl -m user:eqtrd:rw-,user:feedmgr:r--,user::---,group::r--,mask:rw-,other:--- /xfiles/change1/testfile setfacl: /xfiles/change1/testfile: Operation not supported
I have defined my /etc/fstab as /dev/ROOTVG/rootlv / ext3 defaults 1 1 /dev/ROOTVG/varlv /var ext3 defaults 1 2 /dev/ROOTVG/optlv /opt ext3 defaults 1 2 /dev/ROOTVG/crashlv /var/crash ext3 defaults 1 2 /dev/ROOTVG/tmplv /tmp ext3 defaults 1 2 LABEL=/boot /boot ext3 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/ROOTVG/swaplv swap swap defaults 0 0 /dev/APPVG/home /home ext3 defaults 1 2 /dev/APPVG/archives /archives ext3 defaults 1 2 /dev/APPVG/test /test ext3 defaults 1 2 /dev/APPVG/oracle /opt/oracle ext3 defaults 1 2 /dev/APPVG/ifeeds /xfiles ext3 defaults 1 2
I have a solaris server where the vfstab is defined as
cat vfstab
# fd - /dev/fd fd - no - /proc - /proc proc - no - /dev/vx/dsk/bootdg/swapvol - - swap - no - swap - /tmp tmpfs - yes size=1024m /dev/vx/dsk/bootdg/rootvol /dev/vx/rdsk/bootdg/rootvol / ufs 1 no logging /dev/vx/dsk/bootdg/var /dev/vx/rdsk/bootdg/var /var ufs 1 no logging /dev/vx/dsk/bootdg/home /dev/vx/rdsk/bootdg/home /home ufs 2 yes logging /dev/vx/dsk/APP/test /dev/vx/rdsk/APP/test /test vxfs 3 yes - /dev/vx/dsk/APP/archives /dev/vx/rdsk/APP/archives /archives vxfs 3 yes - /dev/vx/dsk/APP/oracle /dev/vx/rdsk/APP/oracle /opt/oracle vxfs 3 yes - /dev/vx/dsk/APP/xfiles /dev/vx/rdsk/APP/xfiles /xfiles vxfs 3 yes -
I am not able to find out the issue. Any help would be appreciated.
Your fstab line is unreadable, but you may need to turn on the acl option for ext3 in your /ifeeds partition:
/dev/APPVG/ifeeds /xfiles ext3 defaults,acl 1 2

Ordering of /proc/mounts and /etc/mtab

Does anyone know whether /proc/mounts is guaranteed to be in the order in which devices are mounted?
For instance:
[root#machine proc]# cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext3 rw,data=ordered 0 0
/dev /dev tmpfs rw 0 0
/proc /proc proc rw 0 0
/sys /sys sysfs rw 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
devpts /dev/pts devpts rw 0 0
/dev/sda1 /boot ext3 rw,data=ordered 0 0
tmpfs /dev/shm tmpfs rw 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
/dev/root /boot ext3 rw,data=ordered 0 0
In the above case, can I be sure that /boot will currently show /dev/root rather than /dev/sda1, which is currently hidden.
I'm guessing the same answer should be true of /etc/mtab.
I'm on RHEL 5.5.
The mount points in /proc/mounts are in mounted order. If you mount a new file system it gets appended to the list of filesystems, essentially obscuring the original mount point.
There are absolutely no guarantees about the content of /etc/mtab, it is purely managed by the userland mount command, so can be bypassed or rewritten arbitrarily, plus you can use the '-n' option to mount will actually omit placing entries in the /etc/mtab, thus making it incorrect relative to the kernel.
As a silly question, why do you need this information?

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