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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Linux File Permission CVSD

I have a CVSD server on debian. which has few user who can access all the files and folder under cvs repository. but now i want to remove permission for one user only for one specific folder. That ...
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30 views

Filesystem block size confusion

I know that block size is, generally speaking, the minimal operation unit of a filesystem, but I was confused by fio, the I/O performance benchmark tool, which has a bs parameter to set the "block ...
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3answers
48 views

File permissions are being changed after gunzip of .gz file; how do I prevent that?

I have an NFS4 filesystem that has AD based authentication setup and ACLS to match. I am controlling access to the machines that mount the filesystem so the ACLs are very basic. One prevents users ...
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86 views

OverlayFS: How Can I Delete Files, Not Hide Them

I am trying to aggregate two mount points in to a single directory so that it will combine the files from both in to a single mountpoint. I am doing some tests with overlayfs and have been able to ...
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1answer
23 views

Cannot Create A Directory Called 'partition' On msdos Flashdrive

Really strange issue that I've encountered. I have fedora 23 and a flash drive that I play with writing some scripts for mount/unmount operations: /dev/sdb1 on /run/media/mymounts/kol type msdos (...
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1answer
114 views

VM filesystem in read-only mode

I have a VirtualBox Ubuntu VM with a virtual disk that is mounting as a read-only filesystem. I'm not sure why that is, and my attempts to remount as read/write haven't worked. One of the last things ...
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26 views

Shrinking an img file that contains linux partitions

I've got an img file (4,02GB) containing a Linux OS. My goal is to shrink this img filed down to < 4GB. The img contains a linux partition that only holds about 2,5GB of data. I need to be able to ...
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1answer
107 views

Unable to enable LDAP authentication on GPFS / Spectrum Scale file system

I have setup a GPFS / Spectrum Scale cluster on 2 RHEL7 nodes. On that cluster I have created a filesystem. I want to enable LDAP based authentication with kerberos so that I can NFSv4 ACLs to ...
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3answers
118 views

How do you securely shred a file from a RAID 6?

I'm looking for a way to delete a file from a RAID 6 implementation in a secure fashion (shredding). Do I need to delete the file from the RAID, disassemble the RAID, wipe the free space of each drive,...
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1answer
216 views

Resizing CentOS partition using parted

I am using CentOS 6.x. I would like to resize the LVM partiion, but I am little confused when I use parted to see the partition information. I have a few questions. Please look at the partition ...
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1answer
22 views

Get free capacity of an ocfs2 volume

I want to get free capacity of an ocfs2 volume (ocfs2-tools version 1.6), which is not mounted any where. Is there way to do that. Thanks
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1answer
102 views

How to get filesystem information of a logical volume which is not mounted

In linux, I want to get file system type of an ummounted logical volume. Is there any way to do that
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1answer
37 views

quota exceeded without files

How is it possible for a user/group to exceed its quota without owning any files? Here is an extract of my repquota output: *** Report for group quotas on device /dev/mapper/lata Block grace time: ...
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1answer
90 views

Filesystem Performance for LUKS Encrypted Volumes?

As you can format a LUKS volume with any filesystem you want, are certain filesystems better-suited to IO performance against an encrypted filesystem? Specifically, I'm wondering about a loop device ...
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1answer
46 views

Error trying to enable LDAP with kerberos authentication with GPFS

I have 3 RHEL7 nodes with GPFS / Spectrum Scale 4.2.0.0 installed. The 3 nodes have been setup with GPFS as a cluster with a GPFS filesystem created. I am trying enable LDAP based authentication ...
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38 views

Bad performance on ocfs2 with many files

i am managing a small science server infrastructure with an ocfs2 storage. On the storage are about 9.000.000 files consuming 4,7 TB. The files itself a really small around 500KiB-1Mb. The problem is ...
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2answers
223 views

What kind of ACL storage to use for a Samba domain controller on ZFS and FreeBSD

I want to set up a Samba domain controller on a FreeBSD hosts that uses ZFS for file storage. When I try to run samba-tool domain provision as documented on the Samba Wiki article on setting up a ...
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0answers
65 views

Read only file system after every reboot - centos

Some time ago I got disk full problem and after that everytime I reboot my centos server, the system loads with read only system files. Running mount -o remount,rw / will solve my problem. But ...
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4answers
89 views

Scan windows file system for directories containing certain words

Is there a command that I can run on a windows Server 2008 r2 that will only show directories that contain a certain word. For Example I want to find all directories that contain "logs" That means ...
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1answer
25 views

What happens when I press Ctrl+C when e2fsck running?

What happens when I press Ctrl+C when e2fsck running ? will it go to command prompt ? or it will reboot & then the server again goes to fsck ? Reason Why I want ? I want the server to up &...
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29 views

Windows Object Access Audit vs File Properties “Accessed” Date/Time

I'm attempting to audit all attempted access to a specific executable on a Windows 2008 R2 system, and have turned on success and failure auditing for all subcategories in "Object Access" in Advanced ...
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2answers
32 views

Prevent root in linux from changing folder permissions in GPFS filessystem

I have created a NFS export in a GPFS/SpectrumScale filesystem I created. I have enabled AD based authentication with our domain. Everything works. The NFS export was created with NFS4. The NFS ...
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1answer
31 views

Unable to mount NFS export unless I sudo to root

I created an NFS export on a GPFS/SpectrumScale filesystem I set up. I tested the NFS export on a xLinux, pLinux, z/OS and AIX succesfully. I then enabled AD based authentication on the NFS export ...
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1answer
148 views

How can I set up a filesystem directory to *always* be group writable?

I have a Linux file server with some shared directories. These directories are sometimes accessed over SFTP, and sometimes by users with shells. Regardless of how these directories are accessed, I ...
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28 views

Which version of OCFS2 is Required for Global Heartbeat

I am running Ubuntu 14.04 (Trusty) and have several iSCSI LUN's setup with the OCFS2 filesystem and local heartbeat. Since I have several OCFS2 formatted LUN's in my luster, I thought it would be ...
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2answers
31 views

Can LVM VG Contain PVs With Different Filesystem Types

Assuming of course, that both filesystems support LVM functionality. I originally thought yes, since this is an abstraction layer, but when googled couldn't find a direct confirmation.
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3answers
59 views

What is the most suitable path on Windows workstations to store admin scripts? [closed]

We have a need for a GPO to store admin scripts locally on Windows workstations (7 and above), and I was wondering if Microsoft has any recommendations or if you have any experience or thoughts on ...
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1answer
40 views

is there a way to findout about a file history (create date / create directory / moved directory ) ? [duplicate]

so i found a shell deep in a directory of my website . my website doesn't have a upload section and i use a well known framework and it covers sql injection ( i use codeigniter active record to work ...
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1answer
43 views

ext2 or ext3 without journaling

I've recently came across several servers with different "strategies" for their /boot partition (btw, always as /dev/sda1, 512M) Some servers use ext2 for /boot, some use ext3 for /boot, and for the ...
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0answers
90 views

Troubleshooting with kernel call trace and underlying root cause with XFS

How to determine the root underlying cause of an error when looking through a Linux kernel call trace, and in which order should I read the call trace? From my understanding, the call trace should ...
2
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0answers
171 views

Disk and Inode quota both exceeded; cannot delete anything

(I am using a UFS file system on a Solaris server. I have root privileges on the machine, but not on the machine that contains the disc in question.) I am receiving a "Disc quota exceeded" error when ...
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0answers
14 views

Samba as a layer above custom storage

Does Samba allow to use some sort of custom storage? I would like to serve virtual files with my application and to use Samba for serving them to (Windows) clients. Is it possible? I know there are ...
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133 views

Can't mount BTRFS with write permissions. Btrfs check crashes (Core dumped)

I was using btrfs filesystem for some time on one of my external drives mainly to test deduplication and everything was working just fine. Unfortunately yesterday when I mounted the partition I ...
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1answer
36 views

Not able to ssh into server after mounting users home on other ebs volume [closed]

I have a server which has a low storage problem. What i want is to mount the user ec2-user's home directory that is /home/ec2-user to another attached storage drive which is available at /dev/xvdk and ...
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2answers
30 views

what are my options for linking directories

I have a configuration file which refers to a file structure. This is what I have <?php // HTTP define('HTTP_SERVER', 'http://XXXX.co.uk/public_html/'); define('HTTP_IMAGE', 'http://XXXX.co.uk//...
3
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1answer
852 views

Server 2012 R2. Add permissions to all folders and subfolders when inheritence is disabled

I need to add full permissions for a specific group of users to all folders/files and subfolders on our file server without changing other permissions. Few years ago someone removed "Administrators" ...
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13 views

/dev/mapper/vg-root shows 100% usage [duplicate]

/dev/mapper/vg-root shows 100% usage even when the du command shows that more than 90% disk space is available, this is a 200GB disk.I am running CentOS 7.x please let me know the issue ? [fg@79732 ...
4
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1answer
60 views

How can I track why files are getting deleted on my Windows Server?

I have a Windows 2008 R2 server running a third-party web app. The web app generates log files and those log files are getting randomly deleted. The vendor support isn't able to reproduce the issue (...
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1answer
36 views

What is the “right way” to combine sync and drop_caches?

When I need to do echo 3 > /proc/sys/vm/drop_caches with a sync beforehand, is it better to use sync && echo 3 > /proc/sys/vm/drop_caches or sync ; echo 3 > /proc/sys/vm/drop_caches....
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52 views

change file system from ext3 to ext4 effict on MySQL

I have a situation where MySQL was installed in Linux with a ext3 file system. One table (InnoDB) reached the maximum size allowed for ext3 (2 TB) , insert statement gave "The table 'foo' is full". I ...
4
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3answers
341 views

Generating a lot of dirty pages is blocking synchronous writes

We have processes doing background writes of big files. We would like those to have minimal impact on other processes. Here is a test realised on SLES11 SP4. The server has massive memory, which ...
0
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1answer
309 views

Server Backup reports incomplete backup [0x80070020] due to item in System Volume Information Folder

My Windows Server 2012 R2 Essentials server has started throwing the same error each time during daily backups, each backup has this error in the failed items backup log: Error in backup of E:\...
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14 views

What will happen if i delete the Sys Folder on Debian Wheezy

it might be a noobie question, but i'm interesting in what the result would be (without trying). I was restoring my filesystem of my Debian Wheezy from a backup.tgz. According to some tutorials like ...
2
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1answer
33 views

HP UX iostat on File System

I have a server running HP UX 11 OS and I'm trying to have I/O statistics for File System and not disk. For example, I have 50 disk attached to the server when I type iostat (here under output of ...
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2answers
63 views

Lightweight transparent compression filesystem?

I have an AMD64 KVM VPS at RamNode, it has 30 GB disk, 256 MB RAM, and 1 "virtual CPU" (I have no idea of the specs of the host CPU). It will be used to store many small, easily compressed files, ...
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2answers
29 views

Using the output of a program as the contents of a file, dynamically

In Linux, I would like to create a file where the contents of the file are dynamically generated by the output of a program. The examples which already exist are /dev/random /dev/urandom, /dev/zero, ...
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1answer
71 views

File transfer (copy) queue for a Linux cluster

I am running (on CentOS 6) a cluster connected to the head node over a slow network. Each spawned job needs to pull a ~1GB file from the head node to the compute node, and then process it locally. The ...
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101 views

Cannot remove stale file on btrfs

I have a btrfs filesystem which in one directory has the following entry: -????????? ? ? ? ? ? 1448367601.M899489P12992.mst19,S=8958,W=9072:2,S I cannot remove this file, every operation ...
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2answers
48 views

Linux - wrapper to monitor an application's file access? [closed]

Are there any user-level wrapper-like scripts/programs that can watch what files an application accesses, without impacting performance? I'm trying to capture what files are produced by an automated ...
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2answers
113 views

I have 757 permission on some specific Linux directory. How can I grant read only access to user1?

757 allows read, write, execute by owner + read, execute by owner group + read, write, execute by others. Is there any way arround to specificaly allow read only to user01? Please exclude the ...