A filesystem is a method of storing and organizing computer files and their data.

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45 views

How does fsnotify setting affect system performance?

Occasionally a software package I install complains that the default fsnotify setting is far too low for decent performance. Intellij IDEA or crashplan are two examples. They suggest using fsnotify ...
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3k views

Mounting a multi-partition (GPT/HFS+) USB 2.0 harddrive on Debian

I have a 3TB USB 2.0 hard-drive which has two HFS+ (Mac) partitions using GUID partition table for the partition records. It was partitioned with Mac OS Disk Utility. How can I mount these partitions ...
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58 views

How to restrict directory name creation to pattern?

I have FreeNas CIFS share. Mount command result: /dev/ufs/VSPHERE on /mnt/VSPHERE (ufs, NFS exported, local, soft-updates, nfsv4acls) I want to restrict users from creating directories that do not ...
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141 views

Aufs Whiteout removal

I'm using AUFS for merging 100+ branches for a project. At runtime, I frequently add or remove few branches. Now, If I have a branch named "firefox-21.0" and If I update/modify one of it's file then ...
2
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127 views

aufs with lower writable branch

I'm trying to hide some directories on a mounted file system (it's not about security, just aesthetics). I've mounted the file system regularly on /mnt/data and wanted to use aufs to overlay a ...
2
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0answers
404 views

find ount what [flush-8:0] is writing

Using iotop, I found out that [flush-8:0] is doing a lot of hard disk activity, which explains the annoying slowdowns. However, I can't figure out what's the actual cause behind this flushing. No ...
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98 views

Why does my Pandaboard boot partition need to be vfat, and the rootfs need to be ext3 or ext4?

While booting Android on a Pandaboard, I am partitioning the SD card into two partitions, boot and root. They contain different filesystems. Why does the boot partition need to be vfat, while the ...
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119 views

Can a FAT32 and NTFS file system exist without UUID?

I have an USB disk drive partioned with 2 FAT32 partitions, which is not getting detected in the embedded device, but gets detected in a Fedora system. Basically in the udev rules, I am not able to ...
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332 views

Can /mnt/hgfs/'shared folder' be used as apache root?

I have an Ubuntu Server (12.04) running on my development machine. It is in a VM. I have succeeded with the task of setting up Apache2, MySQL, and PHP. I can access the server from my host browser ...
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60 views

What are the differences between the current Linux kernel and the Unix SVR4 kernel in terms of device drivers+i/o and virtual files systems?

Yes I realize that Linux supports many more file systems and recognizes more devices than Unix SVR4. I'm interested in what the differences are in the abstraction on top of an actual file system, or ...
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16 views

How is default readahead value determined

I have two different devices running XFS and the default readahead value set differs between the two disks. Why is that ? How is the default size computed ? Is it device dependent ? I might also add ...
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25 views

Replacing default initramfs with my own

I followed this article to develop my own sample intramfs.cpio Now I have to put this in my kernel and compile. The procedure that I follw for petlinux is that I first run petalinux-config (and ...
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8 views

The libblkid library: any way to use it with blocks in the core memory?

I know how to use the libblkid library to analyze existing block devices. I'd like to use it to analyze a memory extent before I write it to the block device. Something like that: char block[4096]; ...
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25 views

Citrix XenServer, all packages appear to be 32bit

I'm hoping to use Citrix XenServer for a group of 4/5 machines. One of these machines has 18TB of storage (after RAID5 is taken into account). I've installed XenServer and mkfs.ext3 is the only ...
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30 views

How to use fslint (in particular findnl) on the command line to actually mimic the behavior of the fslint-gui?

So I am trying the fslint tools. However, the help included in those tools as well as the man page don't indicate that the cleanup actions offered by the fslint-gui are also available through fslint ...
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11 views

What forms of discretionary access control are there?

I know it's kind of an unguided question, but just so I have a broader sense of how things are I was interested in getting a reasonably complete list of discretionary access controls available on Unix ...
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38 views

How can i determine the block size of an vxfs filesystem?

I am looking for a way to see what the current blocksize of an filesystem is. Normaly i would use tune2fs -l | grep "Block size", but that doesn't work on vxfs. I googled a bit and found fstyp -v ...
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40 views

Optimization for an SSD?

I am running Fedora 20 on a Laptop ( Lenovo Ideapad Yoga 2 Pro ) with an SSD. My filesystem is LVM with ext4 as the format option. I am now running Fedora as the only OS on the system with Legacy BIOS ...
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612 views

kernel: “echo 0 > /proc/sys/kernel/hung_task_timeout_secs”

I got this errors in syslog. Any idea what does it mean? The system is running on Ubuntu 12.04, kernel: 3.8.0-35-generic #52~precise1 It looks to me like failure when trying to write to disk... ...
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168 views

Mount exFAT file system as user without hardcoding

I've "solved" the following problem, but not in a desirable way. First, mounting exFAT file systems in Linux was truly as simple as this site says. The catch is, "as long as you are root." A user ...
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35 views

Can data be “clustered” on disk? If so, how?

Can linux be set to "automatically" cluster data in the way a clustered index does on SQL Server/MySQL or Postgres but a little better? websocket++ allows for fully persistent and shared memory ...
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114 views

How to blacklist bad blocks from a MD-raid + dm-crypt + ext4?

I have a ext4 partition, on top of a dm-crypt, on top of a MD-RAID 10. One partition (/dev/sdc1) dropped out of the array with a ton of read errors. I ran the manufacturer provided diagnostic tool ...
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841 views

Problem with openSUSE 12.3 dual-boot installation (with Windows 7)

I have a current Windows 7 64 bit installation that I'm using and I wish to create an openSUSE 12.3 partition on my HDD (not my SSD Windows drive). I used the Windows Disk Management tool to shrink my ...
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150 views

unionfs filesystem

I recently learned about unionfs and aufs and would like to put it to some real use. The scenario I have in mind is the following. Boot a machine with ubuntu on it which will serve as our base. Make ...
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105 views

/dev/shm/ecryptfs-$USER-Private keeps climbing in Kubuntu 12.10 Install

I'm having a problem with an installation of Kubuntu 12.10 with an encrypted home directory. I've been trying to figure it out for several weeks. For transparency, I'll note here that I posted this ...
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107 views

How can I delete data from in a hexdump file from one offset to another?

I've created a disk image which was zeroed, formatted to ext4 file system, and then had several various files copied to it. I'm trying to extract these files using a combination of xxd and dd, but ...
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1k views

How to set up ZFS with ZIL and L2ARC SSD?

I have been considering bcache and flashcache. However my friend suggested me something called ZFS. In fact it says that formating disk with ZFS can actually do the exact same thing without kernel ...
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121 views

Directly convert Archbang live on a USB drive to one such with persistent file-system

I have installed Archbang 2012.12.03 from ISO image on my USB drive, now I have a USB drive with a live Linux installed on it but at end of every session and rebooting system I faced with a fresh ...
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107 views

Creating a Virtual filesystem to boot linux

I am trying to boot the linux kernel (bzImage) in QEMU but have had issues. After asking on U&L I found out that my problem was that I was booting the kernel without a filesystem to boot from. So ...
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165 views

Negative hdd usage. Available is larger than fullsize

Having issues with space accounting of lvm volume. 23G is available. But the full size of the partition is 20G. (So, it shows "-4.1G used" 0_O) > df -h Filesystem Size Used Avail Use% ...
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241 views

Unable to access Linux share from a Windows machine with NT_STATUS_BAD_NETWORK_NAME error

On the Linux machine I changed the smb.conf like this: [john] path = /root/john/downloads available = yes valid users = john read only = no browsable = yes public = yes writable = yes The path ...
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126 views

memtester runs faster after couple of runs

I am using this test tool : http://pyropus.ca/software/memtester/ And I noticed that first 3 iterations take 4 hours but 30 iterations take only 12 hours. I was hoping that 30 iterations will take 40 ...
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394 views

How can I determine how directories/filesystems have been mounted?

I have access to a VM which on a different network at work using NIS. (Debian by the way) This VM has about 10 extra /directories in / when I log in. They do not exist on that VM alone, they are ...
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64 views

How to access storage device related events with Zeitgeist?

I am trying to get my mind around Zeitgeist, using the Python DBus API. To get the latest accessed files and application is not so hard, here is what I do: #! /usr/bin/env python from ...
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204 views

Connected external HDD slows down system

I need to connect large external hard disks (with many many files) to a system running Ubuntu. I have no idea how the Linux kernel is treating the inodes for the external drives, but attaching huge ...
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1k views

/etc/fstab is mounting rw filesystem as read-only

A partition of my internal hard drive (not the root partition) I want to mount automatically on boot. I've been using /etc/fstab to mount my external backup drive automatically read-only, so this is ...
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9 views

files that do not excist, prevent me from deleting them, corrupted filesystem

Well... It's about on an OS X system (hfs+), but that's unix after all to. :p system has become unbootable, due to a filesystem error... fsck.hfsplus fails because .... ... ** Checking ...
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36 views

No filesystem could mount root, tried: jffs2

CPU: ARM Cortex A-9 This is the kernel command line that I appears in configuration menu root=mtd:jffs2 rw rootfstype=jffs2 console=ttyps0,115200 I have put three files in flash: BOOT.BIN in mtd0 ...
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0answers
16 views

Fedora Update and /var space problems

I have just installed Fedora 20 (KDE) and the system informed me that I should get updates. I checked everything and accepted to install additional ones. It got to a certain point (around 10%) and it ...
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19 views

How not to boot from RAMDISK?

My all files and folders get disappeared after a system reboot. I am running petalinux on zynq chip by xilinx. I got some hint why is this happening. Actually my entire system is booting from RAM. ...
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85 views

jdb2 keeps Hard Disk busy all the time

My system became too slow last few days. The hard disk indicator is on all the time. To discover which process is keeping the disk busy i run this command: # while true; do date; ps auxf | awk ...
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79 views

CentOS 6.5 File system permission?

I am wondering, i have installed CentOS 6.5 Live-DVD in my company PC. After all the LAMP installation is done, am having a trouble with the File System permission settings. In the File system ...
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0answers
41 views

Big file overwriten with a 0B file

I just opend for write (by mistake) a big file with data (about 200 MB). Now I have this file and it has 0B. I want to know If I can find raw data on disk for recovery... ?
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126 views

touch: setting times of No such file or directory

I got strange issue with TeamCity server (from log-file): [2013-12-26 16:48:52,915] WARN - jetbrains.buildServer.SERVER - Failed to save custom data to the file: ...
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83 views

What's the problem with fsck.ext3?

It seems there is some problem with my HDD in my satellite box. The box records to and plays video from the HDD, but occasionally it hangs (it was stable before). It's Linux version ...
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53 views

How to compare two rfs directories with `diff`?

I've two RFS (RFS = Root File System) directories, which I would like to compare to each other with diff. Both directories represent an RFS of some other system, and they may contain links. If those ...
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56 views

File change notification in AIX

Is there a way to get notified immediately when a file changes , in AIX? For example, I have a text file , which a script file writes its exit status to. I want to get notified almost realtime, when ...
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27 views

Which of HIDS can do this?

I'm currently in choosing of HIDS ( Host-based intrusion detection system ). I'm discovery etckeeper on my ubuntu. My question is: Which of HIDS can trace each file on the filesystem? E.g. keep ...
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145 views

e2fsck not working

I am using Linux slitaz on my machine. I am able to see drives on the left side of the screen but when I click the drives it is giving the error cannot open the drive. When I ran the e2fsck on that ...
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81 views

System cannot load Ubuntu based OS's

I built a computer a few months ago, specs listed here. I then installed Linux Mint 13, but then when I wanted to install Ubuntu, the install would start, and I would select "Install". But when it ...