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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Unable to list contents/remove directory (linux ext3)

System is CentOS5 x86_64, completely up to date. I've got a folder that can't be listed (ls just hangs, eating memory until it is killed). The directory size is nearly 500k: root@server [/home/user/...
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2answers
66 views

Can a “virtual” SVN repository be created whose own folders point to folders in another repository (like a FS mount)?

I have a Subversion repo hosted on a CentOS-based server. There are several teams who require access to different parts of the repository. I'd like to allow different users to see different parts of ...
3
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4answers
1k views

EBS+RAID10+XFS slower than EBS+RAID10+EXT3 using MySQL?

We're currently using EC2 with 16 EBS volumes in RAID10 configuration for our MySQL data. I know some people don't recommend to put EBS volumes to RAID but that's not what I'm concerned about at the ...
4
votes
5answers
16k views

Is there a way to delete/truncate a file while a process is writing to it?

We have an apache server running on linux writing to a log file that is getting really large (access_log). Our server will begin running out of space. Is there a way to delete or truncate the file ...
0
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1answer
696 views

HYPER-V Cluster W2012R2 Can't delete VHDX on CSV

I'm working on a Windows 2012 R2 Hyper-v. I've just done an EXPORT of a Virtual Machine to a CSV Volume to import later. But I hanve't performed the import, and when I went to delete the exported ...
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0answers
49 views

After installing a new disk, can't use old mount points on linux

So, I'm stumped on this one. I have functionally two volume groups. vgold and vgnew, and I migrated the lvms from the old one to the new one (via rsync of the files to an external drive first, not ...
4
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2answers
102 views

Next-gen filesystems: disk space usage log? [closed]

From time to time I run into problems when server hard disks (Linux) fill up quickly with lots of small files. When this happens I have to try to figure out how much space is being taken up and where ...
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1answer
38 views

IIS SMTP to create emails as file

Is it possible to configure IIS SMTP to receive emails from client and store into a file? Yes? How? My company does not allow email communication on our secure domain (long story). So in order to ...
3
votes
3answers
284 views

Scaling beyond 65k open files (TCP connections)

I have a requirement for my Ubuntu 14.04.3 LTS server to have >65k clients connected to it via TCP. Although I have memory & cpu to spare I'm unable to get more than 65k clients to connect. I ...
0
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0answers
175 views

Why is it not possible to mount a replicated gluster volume with one Gluster server?

I am running 2 glusterd on individual machines connected by private network. It apears that I can only mount the bricks if both deamons are up, otherwise it failes. As I am pretty new to glusterfs, ...
2
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2answers
182 views

Is a child directory “underneath” or “above”?

Is there a defined rule when to use underneath and when to use above when describing a child directory? I have encountered (and used) both: Make sure the config file is stored above the web root. ...
0
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1answer
85 views

Are zero byte files an indication of file system corruption?

I recently noticed a strange behaviour. I could not restart a productive webserver running since more than a year because the configuration was invalid: # /etc/init.d/apache2 restart Syntax error on ...
1
vote
1answer
121 views

Slow file io performance after large network copy on Win7

In a step of our build process we run a tool that generates about 125,000 files. When generation is complete we copy them up to a network share so other systems can copy them down to process further. ...
3
votes
3answers
91 views

A good place for application files in Linux

I am rather new to Debian file system placing convention. I see that configuration files for applications are usually stored in /etc/{application_name}/ Is this a "go-to" place when storing actual ...
2
votes
1answer
462 views

Disable file cache for mount point

I ran into a bug similar to this one: RHEL NFS client returns NULL bytes when reading a growing file So my solution was to check for \0 Bytes and reread the file. Problem here is, that the wrong ...
3
votes
3answers
209 views

What is a good configuration for networked Linux computers?

We are on a University campus network, and I am working for a professor who wants to network at least three new computers with four existing machines. I'd like to know the best way to setup these ...
2
votes
2answers
2k views

PowerShell Script to Get a Directory Total Size

I need to get the size of a directory, recursively. I have to do this every month or so. I want to make a powershell script to do it.
3
votes
5answers
5k views

Re-sizing disk partition linux/vm

I VM Player running a linux guest and I was wanting to know how do I expand the disk? In the VM player I gave more disk space but I am not sure how to mount/expand/connect the new disk space to the ...
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0answers
14 views

Call to pythons os.getcwd returning odd results on Lustre filesystem

I don't really know if this question should be on Server Fault or Stack Oveflow, but I thought I'd try here first. I have a python application that makes quite a lot of calls to os file system calls ...
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0answers
95 views

File writes stall during heavy disk I/O on Linux box

I have two processes running on my box => A and B. Whenever there is heavy disk I/O activity caused by writing large files to the disk by process A, I see that file writes in process B are stalling ...
43
votes
7answers
38k views

What is the best Linux filesystem for MySQL (InnoDB)?

I tried to look for benchmark on the performances of various filesystems with MySQL InnoDB but couldn't find any. My database workload is the typical web-based OLTP, about 90% read, 10% write. Random ...
12
votes
3answers
5k views

Mount Docker container contents in host file system

I want to be able to inspect the contents of a Docker container (read-only). An elegant way of doing this would be to mount the container's contents in a directory. I'm talking about mounting the ...
3
votes
3answers
1k views

Linux disk usage analyser that acts like symlinks are real files

I am using git-annex, an extension to the DVCS git, which is designed for handling large files. It makes heavy use of symlinks. The actual large files are moved to the .git/annex directory and the ...
6
votes
1answer
328 views

zfs checksum error in raidz1 vdev but not in disk

I am backing up data stored in a zpool consisting of a single raidz vdev with 2 hard disks. During this operation, I got checksum errors, and now the status looks as follows: pool: tmp_zpool state:...
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2answers
2k views

Is post-sudden-power-loss filesystem corruption on an SSD drive's ext3 partition “expected behavior”?

My company makes an embedded Debian Linux device that boots from an ext3 partition on an internal SSD drive. Because the device is an embedded "black box", it is usually shut down the rude way, by ...
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votes
0answers
21 views

du and df show discrepant amounts of available disk space on my Linux server [duplicate]

I know that inodes aren't necessarily deallocated with certain removal/deletion methods that users/programs use. When inodes are still present and pointing to files that have been deleted, but two or ...
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6answers
5k views

Removing an (apparently) infinitely recursive folder

Somehow, one of our old Server 2008 (not R2) boxes has developed a seemingly infinitely-recursing folder. This is playing havock with our backups, as the backup agent tries to recurse down into the ...
1
vote
1answer
56 views

sporadically, rsync takes exceptionally long

We do backups with rsync like this: rsync -axH --inplace --delete --delete-excluded \ --exclude-from=excludes --stats \ --link-dest="${previous?}" "${source?}"/ "${dest?}"/"${stamp?}" $previous ...
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votes
0answers
24 views

Filesystem benchmark read tests

I am benchmarking my filesystem which is ext3 and I made few tests with program hdparm. To be exact I conducted hdparm /dev/sda4 -t test (/dev/sda4 is my ext3 partition). And I got results with ...
2
votes
2answers
279 views

Setting up tmpfs `/run/lock` for hundreds of thousands of 0 byte lock files, and dealing with the inode limit

I have a situation where I need to create 100s of thousands of 0 byte lock files for concurrency control. I've tested creating them by using: for i in `seq 1 50000`; do touch "/run/lock/${i}.lock"; ...
1
vote
1answer
115 views

IS GlusterFS filesystem partition smart enough to shrink in size due to new data on the server?

I'm new to GlusterFS but it works really well for me as a distributed file system. I have a question about my setup and if I should use the partition I store the GlusterFS brick on for anything else. ...
0
votes
1answer
101 views

Where to create an AF_LOCAL/AF_UNIX socket file when not allowed to write in /var/run?

FSH says that socket and pid files should go to /var/run However, for security purpose, only root can creates file and subdirectories in this location. A common solution is creating a subdirectory ...
0
votes
1answer
559 views

“cannot open shared object file: Input/output error” - for everything

pacman: error while loading shared libraries: libarchive.so.13: cannot open shared object file: Input/output error Almost every command responds with something like this, each with a different shared ...
2
votes
1answer
724 views

Error: No space left on device when starting/stopping services only

I know there are multiple questions like this already, but none of their answers applies to my problem. So I tried to upgrade from Debian 7.7 to Debian 8.1. Every works fine, but certain operations ...
0
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0answers
65 views

Mounting a remote filesystem using v9fs (client) and u9fs(server) does not give me write permissions

I am trying to mount a 9p filesystem on a linux client machine running v9fs as the 9p client with the following command sudo mount -t 9p -o proto=tcp,uname=xxxx,username=xxx,uid=xxxx,gid=xxxx,port=...
0
votes
1answer
61 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 ...
0
votes
0answers
155 views

Proxmox-Server: Extremely high load during deletion-task of old backups

I'm using Proxmox to get some VPS. In Proxmox I set up some backup-tasks which are running fine. BUT: The backups are stored in big files (each backup has round about 300GB) so I can not store more ...
0
votes
0answers
109 views

How to prevent users from creating long paths

Long file paths cause real problems when need to move/copy or delete large amount of data that the path is 350 character long (max character allowed by Windows is 256) I was wondering if anyone knows ...
1
vote
1answer
1k views

Create file system on multipath volume

I'm completely new to linux admin and file system. Recently we acquired an HP MSA P2000 san. I've setup the disk into a vdisk and created 3 volumes on it. On Centos 7, I've also setup the multipath ...
2
votes
0answers
973 views

What is a fast, efficient method for threading rsync

I have a single root directory (on a NAS) that I need to backup to another server. The hierarchy of the directory is several layers deep and a majority of the data is composed of extremely large ...
0
votes
0answers
32 views

Not recognizing path to credentials on fstab

I'm trying to mount a remote filesystem with fstab, and using a credentials file to load the username and password, but for some reason I get this error message when I try to use # mount -a: mount ...
0
votes
1answer
86 views

Gluster FS. Rebuild replicated volume

I am playing with GlusterFS. And now I am curious how to fully rebuild replicated volume. So I`ve created 1 replicated volume from server1 and server2 nodes: root@server1:~# gluster volume create ...
0
votes
1answer
2k views

Direct I/O on Linux

I'm trying to enable Direct I/O on /opt (/dev/sda6, ext4) on Linux Mint 13. What I'm trying is: mount -o dio,rw /dev/sda6 /opt as root. The system responds with: mount: wrong fs type, bad option, ...
0
votes
1answer
301 views

Windows Server 2008 R2 Slow File Copy

I recently installed Windows Standard Server 2008 R2 with SP1 on an HP Proliant ML350 G5. This server has Sql Server 2008 Express with a few very small databases, and acts as a file and print share ...
3
votes
2answers
464 views

ESXi 4.1 VM gone after hard reboot

I have a serious problem here. After I forced a reboot of a freezed ESXi 4.1 server, a VM is literally gone. When I ssh to the host and run ls -lah inside the datastore, it returnes: /vmfs/volumes/...
2
votes
3answers
9k views

What is meant by “streaming data access” in HDFS?

According to the HDFS Architecture page HDFS was designed for "streaming data access". I'm not sure what that means exactly, but would guess it means an operation like seek is either disabled or has ...
1
vote
1answer
128 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 ...
0
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0answers
45 views

Save cache folder on seperate partition with superfast filesystem?

I'm reading about disks, partitions, filesystems, recovery. I have a lack of knowledge about them. To learn things I mentally model abstract situations. So, imagine... I have the ubuntu server with ...
0
votes
1answer
59 views

How to use an .lnx file on RedHat

I have an .lnx file that I need to use on the RedHat distribution. Any idea how to run / install it? I tryed to make it executable and jut call it but this doesn't work. Thank you.
0
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0answers
45 views

Restore shows tape volume error

I have used the below command to take dump on my RHEL server: /sbin/dump -0uz -f /data0101/backup_labeir1/labeir1_150622_123050_^apps.dmp /apps The dump is successful, but when I do a restore using ...