File Quota

The Hadoop Distributed File System (HDFS) allows administrators to set quotas for each directory. The newly created directory does not have quotas. The biggest quota is long.max_value. A quota of 1 can force the directory to remain empty. A directory quota is a hard limit on the number of names under the directory tree. If the quota is exceeded when the file or directory is created, the operation fails. Renaming does not change the quota for that directory; If the rename operation results in a violation of the quota limit, the operation will fail. If you try to set a quota and the number of existing files exceeds this new ...

Quotatool is a tool for setting and manipulating file system quotas from the command line. It supports quotas for Linux (versions 3.x,2.6,2.4 and 2.2, with EXT2,EXT3 and EXT4,REISERFS,XFS), Solaris, and Aix. Quotatool 1.4.12 This version is now likely to change to a non-existent gid quota. GB and TB have been added as the size parameter of the multiplier. Several errors have been fixed. The document has been improved. Development has moved to ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall Recently encountered Svchost.exe virus, the virus like to stay in the Windows root directory, with the system started running, in the list of the starting program does not have its name. The guy also brought two generals: Autorun.inf and Ravmon.exe. Anti-Virus software put it in hand ...

Note: This article starts in CSDN, reprint please indicate the source. "Editor's note" in the previous articles in the "Walking Cloud: CoreOS Practice Guide" series, ThoughtWorks's software engineer Linfan introduced CoreOS and its associated components and usage, which mentioned how to configure Systemd Managed system services using the unit file. This article will explain in detail the specific format of the unit file and the available parameters. Author Introduction: Linfan, born in the tail of it siege lions, Thoughtwor ...

To prevent a user or group of users from consuming too much disk http://www.aliyun.com/zixun/aggregation/17325.html > storage space, you need to limit the available storage space for users or groups of users. Disk quotas are meant to force users to keep their system disk occupied for most of the time under the quota, and to eliminate their ability to use disk space indefinitely. In the Linux system, the quota is set on the file system, the file system needs to start before setting ...

1 Hadoop fs ----------------------------------------------- --------------------------------- The hadoop subcommand set executes on the root of the / home directory on the machine Is / user / root --------------------------------------------- ----------...

Start Hadoop start-all.sh Turn off Hadoop stop-all.sh View the file list to view the files in the/user/admin/aaron directory in HDFs. 　　Hadoop Fs-ls/user/admin/aaron Lists all the files (including the files under subdirectories) in the/user/admin/aaron directory in HDFs. Hadoop fs-lsr/user ...

Overview All Hadoop commands are raised by the Bin/hadoop script. Do not specify parameters running the Hadoop script prints the description of all commands. Usage: Hadoop [--config confdir] [COMMAND] [generic_options] [command_options] Hadoop has an option parsing framework for parsing general options and running classes. Command option description--config confdir overwrite default configuration directory ...

The 1.DD DD command is used to copy a file. 2.edquota This command can be used to set the disk space limit for users and groups of users. 3. Fdisk This command is used to perform a disk partition under Linux. 4.MKFS This command is used to build a Linux file system. 5.mount This command is used to assemble a file system. 6. Quota this command to restrict and display the disk space available to the user.

"Task Analysis and Requirements"  establishes directory/nfs/public, implements NFS service sharing, allows all users of 10.10.0.0 network segments to read, and other users do not have access to  to establish directory/nfs/admin, to achieve NFS service sharing, Only 10.10.9.100 users are allowed to read and write, other users do not have access to  Directory/nfs/work, NFS service sharing, test.com Domain users are read-only, and the root user is not mapped to anonymous users  Setup system at run Level 3 、...