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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Filezilla transfer file name colon replace

I have transferred a massive amount of files by filezilla. But a few scattered files are pending being transferred. They had failed since my filezilla server is on windows and filezilla client is on ...
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18 views

Linux: Mount a remote disk stored on a custom storage

We have a non-standard storage (FS) on which we have flat disk images stored. We need to extract data from this raw image on a different host. The word "extraction" here means that I want to copy ...
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32 views

How can I directly read data from a file in Linux without using the filesystem cache?

I have shared storage which is mounted (read-only) on SERVER1, and mounted (read-write) on SERVER2. SERVER2 is writing data to a file. SERVER1 is reading data from that file. The file poling is ...
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19 views

How to repair multiply-claimed blocks?

I get a lot of the following logs in dmesg: [26159.277230] EXT4-fs error (device sdb1): ext4_iget:3875: inode #394497188: comm mv: bad extended attribute block 22794025699896 [26219.914802] EXT4-fs ...
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1answer
22 views

Look through folder capability on Windows and Linux [closed]

I want to create a user playpen solution that is comprised of a look through pattern. Each user would have his own folder that he can see and write to. This folder will contain his/her personal files ...
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1answer
42 views

Challenges of dealing with large disks/partitions

Currently doing research on creating a new file server. Server will be Linux based (CentOS 7) and will need to have around 8 TB of available space. Samba will be used to share the files. I am trying ...
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2answers
91 views

Optimize Linux file system for reading ~500M small files

We're seeing performance problems on a file system that contains ~500 M files that are relatively small (typically tens of kb) and ~150 K directories. Files access is predominantly reads and writes ...
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23 views

How much usable space will a 2TB+2TB+3TB+3TB btrfs filesystem have with data in RAID-1 mode?

I have a pair of 3TB drives in a btrfs filesystem, and I wish to expand this filesystem by adding two more 2TB drives, using the btrfs device add command. Data in the current filesystem is mirrored in ...
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1answer
35 views

How to list all files of a partition on linux?

I am running out of disk on my rhel box. I am trying to find all files in /dev/sda2. Do we have a command which can give all files (ideally, with size) in filesystem /dev/sda2? /dev/sda2 31297508 ...
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23 views

what happens if a file is modified while it is being copied over the network?

A bit of background... We run Redis on several EC2 machines running the Amazon Linux distro (seems to be based on Centos to me) and currently utilize both the RDB and AOF backups. These files are ...
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26 views

What distributed FS, with small files read / write workload perform better?

I have 2 machines sharing storage via iscsi (multipath), soon we add another one, this machines are Web app servers that read small files on shared storage ( < 256kB), and write them back. so we ...
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1answer
42 views

Recovering data from a drive

I have a server that was running Centos 6. It's been humming along for a few years and I have been backing up data off it on regular basis. All of sudden, and after a reboot, it came up in read-only ...
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1answer
78 views

OpenZFS on OSX filesystem dataset performance issue

tl;dr - My ZFS RAIDZ2 array reads at 7.5+ GB/s and writes at 2.0+ GB/s when I specify a bs=128K or greater with dd. OS X is assuming 1K (as per stat -f %k .) and all my is ~300MB/s; dd gives the same ...
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1answer
18 views

CorrectFilePaths (or alternative) for Server 2008

I have a server with Windows Server 2008 R2 installed, and a third party application that handles all our business transactions. The problem is, we're running out of space, and the root folder for the ...
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1answer
23 views

Is it ok to mkfs and mount the whole disk without partitionate

[root@VM_xxx_centos ~]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/vda1 8255928 7068948 767604 91% / /dev/vdb 516061624 5966928 483880296 2% /data2 As you ...
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1answer
77 views

Strange filename encoding

I have a strange issue regarding a filename. Summary of the situation is: [username@xxx tmp]$ ll -rw-r--r--. 1 xxx xxx 42694 8. Jun 19:56 12287_KKL_Messegerät_EF_30.1.pdf -rw-r--r--. 1 xxx xxx 42694 ...
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1answer
16 views

Make folder writable by multiple users via ACL

Is it possible to set the rights of a folder and all its files in such a way that multiple defined users can add, modify and remove files within? I was hoping to be able to do that via ACLs and I got ...
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25 views

Recursively lowercase, replace space and remove invalid characters on linux FS [migrated]

I want to recursively run the following commands on a directory as part of a cron. The first line changes everything to lowercase, the second replaces spaces with _ and the third removes all invalid ...
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1answer
28 views

Mounting Single San Drive on Multiple Hosts

I'm not sure exactly how to ask this, but here goes. We have a san. Within the san, we have the ability to connect a single volume to multiple systems as a raw disk. The Servers themselves would see ...
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2answers
35 views

All the dates and time for files in a folder in windows [closed]

In windows file explorer, I would like to go through all the subfolders in a folder and identify all the files in those folders and sort them by latest date and time. I am trying to figure out when ...
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1answer
31 views

BackupPC set blackout on alternate days [closed]

At the moment my schedule settings look like this. How can I only backup to only run on Mondays(1) and Wednesdays(3)? What I want to do is alternate between two BackupPC instances so one would ...
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1answer
37 views

Why does /sys/fs/ext4/vda1 exist when /dev/vda1 is ext3?

I'm trying to tune my filesystem for some operations I have to do involving huge numbers of files. Then I got confused about what FS I'm even using. tune2fs -l /dev/vda1 contains: Filesystem magic ...
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1answer
114 views

Creating the exact size FS on xfs

I got a few hundred folders that I need to migrate to a new server. I've been asked to create a xfs FS for each individual folder. Ran a du so I know the exact size of each folder and specified block ...
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14 views

VZFS partition UUID

On a virtual system I have VZFS file system. It is /dev/vzfs. I need to find partition UUID but commands does not work (blkid); also /dev/disk device does not exist. How can I find this partition ...
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72 views

Circular directory structure

I'm having an issue with a circular directory structure warning produced by du and find on my CentOS servers. I have two FreeNAS servers exporting several datasets via NFS which are mounted on the ...
2
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1answer
39 views

How can I warn users about their quotas only once?

I have a number of accounts on a Linux server that have filesystem quotas. I would like to email people only once for each of the following circumstances: The person goes over quota. The person's ...
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1answer
80 views

File Lock on Windows Server

I have a shared excel file stored on a server that continually results in "This file is locked by "another user". Do you want to open as read-only?". This is on a Windows 2003 R2 Server and has had ...
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2answers
20 views

Posix map fs path to syspath

Is there a safe way to map a filesystem path to a /sys/block/ node. For instance on my system (Ubuntu) my / path is mounted from /dev/disk/by-uuid/7f6a93a7-1e63-48a3-a7e3-b336a2f9dbf7 which is a ...
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0answers
39 views

Alternative to ReiserFS for storing many small files in one block?

I know that ReiserFS is able to store multiple small files in a single block, and at one time was recommended for use with s3backer because of that feature, as fewer blocks to store on S3 mean lower ...
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1answer
56 views

Why is my loop device size 0?

Why is my loop device not 600G in size? $ fallocate --length 600G sysvol $ sudo losetup --find sysvol $ sudo losetup --all /dev/loop0: [0831]:13 (/.../sysvol) $ sudo losetup --set-capacity ...
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1answer
95 views

Getting Error: “No space left on device” for a particular filename

I have a ext4 volume with lot of files inside a particular directory. Whenever I am trying to create a file inside it of a particular name, I am getting "No space left on device" error. $ touch ...
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1answer
215 views

How to script parted to resize partition on running root filesystem?

I have a VM template that I use for building other VMs using virt-clone / KVM. The VM template is 4GB to save space. The storage for VMs that I build from this are on iSCSI targets or LVM volumes ...
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4answers
1k views

Effectively handling 2+ million files

I have a file based DB that has about 2M files stored in 3 levels of subdirectories. 2/2/6253 2/2/6252 ... File a vary from 30 bytes to 60 KB. Whole DB is Read Only. DB is about 125 Gigabytes big. ...
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1answer
207 views

Debian 8 Systemd fstab can't mount file system

Just upgraded to Debian 8. And system can't be booted because of this two lines in /etc/fstab: /dev/data/server/ /data ext4 defaults 0 2 /data/vmail /var/vmail none ...
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32 views

Cross-platform filesystem watcher, running in VM watching host?

Can anybody suggest a way to copy data from a VM's host to the VM[0] in way that is cross-platform across hosts (i.e. Windows, Mac or Linux)? Right now, I'm achieving this by running rsync in the VM ...
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1answer
38 views

Can OpenAFS be used as NFS?

I have an application that only runs on Linux, which will generate ~500TB of data over the next year, which all must be kept and backed up each day. It would be temping to go with ZFSonLinux or ...
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1answer
41 views

Server ran out of HD room

A rogue script brought my centOS-based server to its knees and resulted in 0 bytes of HD room left. I since fixed the issue and everything seems to be running normally. So my question is, what ...
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1answer
45 views

Ubuntu - mounting partitions as read only

I have a server which has probably been shut down one time too many as a result of power cuts. Now when I log in, it's mounted every partition I can see as read only. I've looked up the solution, ...
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1answer
56 views

File system preventing execution of files

So I have a particular ext4 drive that doesn't allow me to execute files. I have the following example in bash where even with sudo and with the file having execute permissions for all users, the file ...
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1answer
212 views

CentOS 6.6 Doesn't Boot. Stucks at Enabling local filesystem quotas [ok] [closed]

I am running radius server on my CentOS 6.6, yesterday I tried to reboot my machine with sudo reboot with using Putty. It didn't restarted for some reason and I had to go to my DataCenter. When I shut ...
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1answer
273 views

XFS as default filesystem in the enterprise

After reading up on the whole data=ordered fiasco that EXT4 went through and how much support there was on it accommodating "broken" applications, I was surprised that a filesystem that is not ...
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0answers
27 views

JPG file and other of higher size not downloading

We have a SAP application for official use wherein all the documents are uploaded and saved in a server and from where it can be downloaded by anyone after logging in the server with his/her user ID. ...
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0answers
30 views

Put “.nfs” files created by NFS client in another location?

The setup is a Linux machine that mounts a filesystem over NFS. There is a process that needs to recursively remove directories on the NFS filesystem and ensure the directories are successfully ...
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1answer
26 views

Empty file shrinks after creating FS

I have a problem with my Server which freaks me out. I want to create a empty file and mount the file afterwards as a loop device. So I try this: dd if=/dev/zero of=/tmp/loop.img bs=1024k count=10 ...
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2answers
41 views

Windows network folder directory list inconsistent when viewed from two different client machines

I am on a corporate network using Windows. There is a network share provided by a NetApp appliance. When I log on to two different machines and view the network drive, I see inconsistent directory ...
2
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1answer
105 views

VXFS (veritas) File system filling up - except it's not

I have a Solaris 10 server which is reporting that a file system is filling up: # df -h /opt/CSCObac/var Filesystem size used avail capacity Mounted on ...
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1answer
177 views

MHDDFS randomly breaks

I am using MHDDFS to pool a bunch of large disks together into a single filesystem that I can easily share across a network. For some reason every now and then the virtual filesystem seems to fall ...
0
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1answer
16 views

AVHDX internal format for use with TestDisk

I can't seem to find any info about this. What is a HyperV differential AVHDX file format internally like, for the purpose of forensic recovery? That is: Is it just straight blocks, like dd would ...
1
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1answer
214 views

What is dd if=/dev/zero of=/EMPTY bs=1M

Often times I see this command for use when creating a Vagrant box sudo dd if=/dev/zero of=/EMPTY bs=1M To me it seams that it is copying a lot of NULL characters into a file named EMPTY at the FS ...
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1answer
64 views

Unable to mount fs, disk slice corrupted

please can someone help me with this issue. Now when i started sun server - it run on sunfire t100 and os od solaris 5.10, is display this: checking ufs filesystems /dev/rdsk/c0t0d0s7: BAD SUPERBLOCK ...