A file system (or filesystem) is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available space on the device(s) which contain it.

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Is there downtime by remount /tmp

Just want to know, Is there any downtime by remounting /tmp filesystem. step 1. mount -o remount defaults,exec /tmp step 2. mount -o remount defaults,noexec,nosuid,nodev /tmp
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62 views

Fetching all PHP files and store their size

I like to monitor every php file with their size (and if a new file has been added). On my server are more than 200 000 of em so find takes very long. This is what I do: ls -1 --size $(find -P . ...
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67 views

cvs accidentaly breaks rcs file

I have an cvs server with pretty big binray file (about 50Mb) and its rcs file is about 2G Today I discovered that file update returns an error: cvs [update aborted]: unexpected EOF reading ...
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1answer
133 views

Accessing iSCSI LUN from OS X and Debian simultaneously

My setup is the following: Synology Disk Station as iSCSI target OS X 10.8 as client Debian as client I don't like to know that I should use WebDAV or similar file sharing protocols. I'd like to ...
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3answers
256 views

Cleaning up junk and logs on unix/linux

I manage some unix systems, and users on my system are creating a lot of junk and littering their work areas. I am running into filesystem full every day. There are many terabytes locked up and is ...
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2answers
877 views

How to determine POSIX advisory file locks are working in simfs in the VM I'm using?

I'm looking for a command-line utility or some other way to test effectiveness of file locks, specifically POSIX advisory locks (which aren't only for POSIX, btw) in a Linux filesystem. Specifically, ...
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102 views

How do I speed up “ls -l” on a network file system (NFS)?

I have a NFS volume mounted in the following way: theHostname.com:/path/on/theHostname on /local/path type nfs (rw,nosuid,addr=10.0.0.54) The /local/path directory has 30_000 files. When I do a ls ...
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28 views

Can quotas be turned on automatically when file system is mounted?

I was not clear on this point-- I have quotas enabled in /etc/fstab for several file systems on a file server. However, I have noticed that if I unmount the file system and then remount it (ext4), ...
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102 views

Why do some files in dir list appear in red & have '?' instead of the file properties?

I've just found that in at least one user's Maildir some of the files in the cur directory appear 'flashing'(!) in red in my terminal and the same files have their properties/attributes replaced with ...
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105 views

Can't mount ecrytpfs as a non-root user on Red Hat

I'm trying to mount a ecryptfs volume on Red Hat as a regular user. ecryptfs-utils is installed from source (repos only contain old versions). Mounting as root works normally, but trying with a ...
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1answer
49 views

File system permissions lost or unseen

Ok, I have an apparent WTF question here. I log as root, I run: # ls /var/lib/gitolite3/.gitolite/logs/ -l -rw-rw-rw-. 1 gitolite3 gitolite3 5570 Aug 2 21:00 gitolite-2013-08.log No problem? I ...
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4answers
3k views

Cannot install centos 6.4 with XFS

I would like install centos 6.4 and use XFS as filesystem for some partitions in my configuration. But Anaconda don't propose XFS in the filesystem choice. Then I try to install in text mode but in ...
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1answer
87 views

Is there an issue with too many entries in a directory?

We have a system that uses Jira, and Jira stores attachments to tickets in /opt/jira/jiraattachments. Under that directory is the project name RRT, and under that is a directory of tickets. Thus, ...
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2answers
62 views

LVM system space is not consistent

I have found some problem in my server, here it is: df -H | columt -t Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_test-lv_home 212G 177G 25G 88% ...
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1answer
71 views

Mount a iscsi target volume natively

I have a LVM logic volumn exported though iscsi and formatted by the client to ext4. Now that machine serving the iscsi target went down and I'm wondering if I can just take the hard disk out to ...
2
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1answer
697 views

What are the side effects of a full root partition?

I have a mission critical server running that I cannot take down (or at least, I'm told I can't right now). It unfortunately filled it's root partition up. It's running a custom process that's ...
2
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2answers
264 views

How to rename junction without breaking link

If I rename a folder which is the target of a (or multiple) junction, is there any way to update all the junctions to point to the renammed folder instead of just breaking?
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63 views

Prevent mountpoint from being remounted read-write

Is it possible to force a filesystem to be read-only, unable to be remounted (even by root) as RW? It is not necessary that the mounted volume be recoverable after reboot. One way I have experimented ...
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2answers
429 views

Why don't linux distributions default to mounting tmpfs with infinite inodes?

According to this answer it is possible to mount at least tmpfs with "infinite" inodes. Consider this specific (numbers chosen for example purposes, I know that they're not realistic) situation: ...
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1answer
355 views

Impossible to read / delete some files

How can I fix a message like this (read after a dmesg command)? EXT4-fs error (device hdb1): ext4_lookup: deleted inode referenced: 119197 EXT4-fs error (device hdb1): ext4_free_inode: bit already ...
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1answer
196 views

How to grant somebody “Take ownership” privilege?

I have a Windows 2008 R2 machine. My machine itself is not a domain controller but is joined to a domain. In Local Security Policy, under Security Settings > Local Policies > User Rights ...
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292 views

Slow network file access on windows 2008

We have a really poor business application that uses access databases (I know, fail!) as its back end. There are lots of access db files it uses, all about 4mb in size. If I copy the files locally ...
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1answer
116 views

Add new partition to Centos hard drive

My hard drive currently has (I believe) 2 partition; boot (sda1) and everything else (sda2?). Some of the hard drive is also being used as swap memory, but I don't really understand how that effects ...
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1answer
334 views

rsync copying entire files instead of difference

I have 2 remote folder containing few files. I am using rsync to sync the 2. The thing is that on the first server files are strictly just APPENDED with new data every day. When I call rsync it seems ...
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4answers
124 views

fsck and disk integrity checks for Linux systems that are rarely rebooted

Like most Linux systems, my systems rarely need to be rebooted ( if ever). How do you handle disk integrity checks and filesystem maintenance if you don't reboot? Do you schedule periodic reboots ...
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81 views

Change partition type of a directory

OLD POST. IGNORE If my root / is ext4, how do I change /some/other/directory to ext3? Assuming this is possible, please explain how a directory of one type can exist in a directory of another type. ...
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1k views

Is there any way to fix a corrupted LDM database?

TL;DR: Are there any tools/approaches to diagnosing and fixing LDM (Logical Disk Manager) metadata structures without recreating from scratch? Full description: I have two SSD drives ...
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1answer
73 views

Where do ext3 inode / meta-data reside?

Just a quick question about ext3: Are inodes stored in the same area as file data, or are there separate regions on the disk reserved exclusively for meta-data and others reserved exclusively for ...
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1answer
153 views

Where are filesystem full event logged?

I forced a filesystem to be 100% full. I am able to generate a message to STDOUT: # dd if=/dev/urandom of=reallylargefile count=2097152 dd: writing to `reallylargefile': No space left on device ...
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4answers
4k views

UNEXPECTED INCONSITENCY run fsck manually redhat

I erroneously restarted my server before completing a filesystem resize. Here's the command that ran successfully before restarting: lvresize -L -400GB /dev/mapper/vg_yavin-lv_home At boot, I get ...
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1answer
693 views

file system is going into read only mode frequently

My server file system is going into read only mode frequently. If I reboot my system, It is performing a fsck operation on disks. But, It is exited with exit status 4 ( File system errors left ...
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1answer
125 views

ext2 to ext4: Convert/upgrade or create new

We have a filesystem, on LVM, created as ext2 - and in daily use running 8-10 webservers (software, tempfiles, logfiles). The discs are "local" to the OS, but are really SAN disks provided to the ...
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1answer
365 views

Online resize of ext2 - Bug?

An ext2 filesystem can be resized - as long as the underlying block device can be resized - but not ONLINE. However, as another posting of mine has showed, if the ext2 filesystem is mounted as ext4 ...
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99 views

In linux and solaris, what is the UUID based off of?

If you run dmidecode|grep UUID you are given a "globally unique string of characters" which can be used for licensing purposes. In linux, the format is usually something like this: ...
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1answer
61 views

How can I list all accessed files on process startup

I have a process that fails on startup due to some permission issues. I want to check what files it tries to open on startup but with lsof I can list only opened files for a running process but what ...
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3answers
2k views

AUFS missing in Redhat Fedora, is there an alternative way of stacking directories?

I can't find Aufs in Redhat's Fedora, or any other stackable filesystem for that matter. It seems this is due to relabelling limitations of SELinux. Is there a way to achieve similar without ...
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2answers
136 views

Fedora. Remove file containing dollar sign

Cannot remove a file nor a directory containing it. output of ls -la: -????????? ? ? ? ? ? 1221036243.V905I191359M574755.domain.com:2$ UPDATE 1 [root@domain ...
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2answers
666 views

What does zfs receive -F do?

When I read man zfs for zfs receive I see -F Force a rollback of the file system to the most recent snap- shot before performing the receive operation. If receiving an ...
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1answer
28 views

delete empty file link

I accidently made a link and can't delete that: big:~# ls -al total 88 lrwxrwxrwx 1 root root 27 May 28 18:10 -> /etc/apache2/ssl/apache.pem drwx------ 8 root root 4096 May 29 01:45 . ...
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98 views

Cant remove linux ln hard links

I am using CentOS 6.3 and am logged in a root. When I create a hard link by doing this: ln /root.hdd /somedir/root.hdd That works fine, the inode shows the same between the two files and ...
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69 views

Dynamically allocating limited disk space per user on NTFS

I'm designing a module that needs to allocate dynamic, limited disk space per user. Based on a large NTFS filesystem, I want each user to tell me how much space he want's extended to him, and then ...
4
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2answers
216 views

Opening an archived “Application Event Log” (Hidden Directory)

I'm an admin on the box. I've turned off all the folder options "Hide protected operating system files" and turned on "Show hidden files and folders". I can see this folder in Windows Explorer: ...
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1answer
146 views

Installing RHEL on a single disk with ZFS

I know ZFS is usually used for numerous reasons including it's amazing mirroring features. However in this instance the machine I've been tasked with setting up has a RAID-1 setup so I only have one ...
2
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2answers
221 views

A same file displays different time stamp and permissions between local file system and NFS

I created a nfs share entry mzhu@zeus:/share$ cat /etc/exports /share *(rw,async,insecure) From the local file system, execute 'ls -al' in /share. The output is mzhu@zeus:/share$ ls -al total 20 ...
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1answer
567 views

Vmware Tools potentially locking files/folders on Windows Server

I have a Windows 2008 R2 X64 server running on Vmware ESXi. Originally it was running on Hyper-V, but I have since converted the VHD to a VMDK and migrated to ESXi. I also installed VMware Tools. ...
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0answers
1k views

rsnapshot frequently ext3-fs error: “ext3_lookup: deleted inode referenced:”

I've having following problem frequently on our backupserver. I'll try to explain the issue in the hope somebody could clarify why and how to fix it Setup details We have a DELL r200 server attached ...
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4answers
20k views

How to extend an ext4 partition and filesystem?

I have a 400GB disk with a 320GB ext4 partition. I would like to grow the ext4 partition to use the left space (80GB of free space). +--------------------------------+--------+ | ext4 ...
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3answers
3k views

Is there a hard limit to the number of files a directory can have? [duplicate]

Wondering if there is a limit to the number of files that can be stored inside a directory, in CentOS 6. There is one particular directory which could potentially have millions of subdirectories. ...
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1answer
123 views

Inodes after extending filesystem

If I make a ext4 filesystem and add about 20% of extra inodes, how would this effect the inode count if later I extend the filesystem? Would the extended filesystem also automatically add an extra 20% ...
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1answer
100 views

simple Linux alternative to Windows extpart to extend basic system disk without downtime?

On Windows there is Dell's extpart which allows one to extend a basic system disk (NTFS) of a running system without downtime. It looks like this: C:\>extpart.exe ExtPart - Utility to extend ...