We have bunch of Sun Sparc workstations(solaris 7 & 8) connecting to a linux file server with NFS exports. Recently we upgraded our file server from fedora core1 to redhat enterprise linux 4. And since then we are experiencing a nightmare of file/dir missing. It happens randomly, couple of times... (1 Reply)
We have a Slackware 9.1 box that our ASP controls. We use it to see the logging of our Weblogic-clusters.
All the logging is auto-mounted in /rmt which is fine, as long as you know the names of the mountpoints. When you don't access the mountpoints for a certain period of time, the mountpoint... (0 Replies)
Hi all... I-m quite a new user of UNIX and i was trying to write a simple program and my problem is the following:how can i make a typed letter disappear (as we see in the MORE command, when we type <space>, b, q etc...) i know that for typing some text that has to be read it's used the structure:... (0 Replies)
My PC (Esprimo, 3 yeas old) has one hard drive having 2 partitions C: (80 GB NTFS, XP) and D: (120 GB NTFS, empty) and and a 200 MB area that yet is not-partitioned.
I would like to try Ubuntu and to install Ubuntu on the not-partitioned area . The idea is to have the possibility to run... (7 Replies)
I have set a mysql file to excute everyday morning to generate a html file displayng 2 tables from the database. Sometime they cannot be shown, and it shows the tables are not existed. I have not drop any table, and those 2 tables are not used by any other excution. Anybody know what is happening?... (0 Replies)
Hi all,
I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it... (23 Replies)
Dear all, I lost my CentOS 6.4, Systems default bar/panel where we navigate our system for the Applications, Places & System, Is there anyone who can help me please??? (1 Reply)
Hello,
1 ) Fdisk -l # Displays all the disk with partition table information
My Query )
A ) How can i make one disk ex: /dev/sdd not visible in fdisk -l output ?
B) From where fdisk -l collect and display the information ? (8 Replies)
#!/bin/sh
PATH_1=$PATH
echo "PATH_1 is " $PATH_1
function user_func (){
whoami
export PATH=$PATH_1:/usr/local/bin
echo "PATH is" $PATH
exit
}
export -f user_func
su -m hadoop -c 'user_func'
from out put, PATH is not set with PATH_1 append ( it's not another user to run the... (5 Replies)
Discussion started by: yanglei_fage
5 Replies
LEARN ABOUT LINUX
fsfreeze
FSFREEZE(8) System Manager's Manual FSFREEZE(8)NAME
fsfreeze - suspend access to an filesystem (Linux Ext3/4, ReiserFS, JFS, XFS).
SYNOPSIS
fsfreeze -f mountpoint
fsfreeze -u mountpoint
DESCRIPTION
fsfreeze suspends and resumes access to an filesystem
fsfreeze halts new access to the filesystem and creates a stable image on disk. fsfreeze is intended to be used with hardware RAID devices
that support the creation of snapshots.
fsfreeze is unnecessary for device-mapper devices. The device-mapper (and LVM) automatically freezes filesystem on the device when a snap-
shot creation is requested. For more details see the dmsetup(8) man page.
The mount-point argument is the pathname of the directory where the filesystem is mounted. The filesystem must be mounted to be frozen
(see mount(8)).
OPTIONS -h, --help
Print help and exit.
-f, --freeze
This option requests the specified a filesystem to be frozen from new modifications. When this is selected, all ongoing transac-
tions in the filesystem are allowed to complete, new write system calls are halted, other calls which modify the filesystem are
halted, and all dirty data, metadata, and log information are written to disk. Any process attempting to write to the frozen
filesystem will block waiting for the filesystem to be unfrozen.
Note that even after freezing, the on-disk filesystem can contain information on files that are still in the process of unlinking.
These files will not be unlinked until the filesystem is unfrozen or a clean mount of the snapshot is complete.
-u, --unfreeze
This option is used to un-freeze the filesystem and allow operations to continue. Any filesystem modifications that were blocked by
the freeze are unblocked and allowed to complete.
AUTHOR
Written by Hajime Taira.
NOTES
This man page based on xfs_freeze. One of -f or -u must be supplied to fsfreeze.
SEE ALSO mount(8)AVAILABILITY
The fsfreeze command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
May 2010 FSFREEZE(8)