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Questions tagged [filesystems]

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.

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. A file system organizes data in an efficient manner and is tuned to the specific characteristics of the device. A tight coupling usually exists between the operating system and the file system. Some file systems provide mechanisms to control access to the data and metadata. Ensuring reliability is a major responsibility of a file system. Some file systems allow multiple programs to update the same file at nearly the same time.

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'Permission denied' to a file I own?

My user, bob, can't access files that he (theoretically owns). I'm running Fedora Core 8. It probably easier to shown than tell: > ls -al . total 32 drwxrwxr-x 7 bob bob 4096 May 18 14:33 . drwxrwxr-x 4 bob bob 4096 May 12 15:44 .. drwxr-xr-x 2 bob…
Gordon Wilson
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Optimal UNIX File System Partition + Setup Strategy

When partitioning a new system disk(s) for UNIX, what is your prefered strategy for both desktop and/or servers? Please include disk partition layout, file system format(s) and options, mount points, RAID level(s), LVM groups and volumes,…
cmcginty
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Is there a way to create a copy-on-write copy of a directory?

I'm thinking of a situation where I would have something that creates a copy of a directory, tweaks a few files, and then does some processing on the result. This wold be done fairly often, maybe a few dozen times a day. (The exact use case is…
BCS
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How can you shrink an XFS filesystem?

I have an xfs filesystem that has some free space. Can I shrink it? I know of xfs_growfs. And there is resize2fs and resize_reiserfs. Side question: is xfs not a good filesystem choice for bulk longterm file storage?
Paul Tarjan
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Command line recursive/deep directory copy in Linux?

What is a good, general way to make a recursive/deep directory copy in Linux that works in most cases? I've used simple things like cp -R as well as fairly elaborate cpio incantations. Are there any significant strengths or weaknesses that cause you…
Greg Mattes
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Is there any other reason for "no space left on device"?

I am using Dirvish on a Ubuntu server system for backing up a hd to an external usb 3.0 drive. Until a few days ago, everything worked fine, but now every backup fails with "no space left on device (28)" and "file system full". Unfortunately it is…
dummzeuch
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Resizing a LUKS encrypted volume

I have a 500GiB ext4 filesystem on top of LUKS on top of an LVM LV. I want to resize the LV to 100GiB. I know how to resize ext4 on top of an LVM LV, but how do I deal with the LUKS volume? mgorven@moab:~% sudo lvdisplay /dev/moab/backup ---…
mgorven
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How can I mount a partition on every reboot?

I have a partition mounted with mount -t ext3 /dev/sda3 /foo. Each time I reboot, I need to remount. How can I keep this mounted after every reboot?
coffee
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How do I list a file's data blocks on Linux?

As I understand it, each file on a Unix-like operating system has an inode number (which can be viewed with "ls -i"), and each inode is a list of disk blocks that contain the actual data of a file. Is there a Linux command which takes a filename as…
mike
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mirrored filesystem across a few servers

I'm looking for a solution to mirror or replicate one directory (or one filesystem) across a few Linux servers. Ideal solution would be one, which permits all servers read-write access. I also want it to me resilient, if one of the servers goes…
vartec
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kjournald reasons for high usage

I'm trying to figure out why is kjournald going crazy on my machine. It's an 8-core box with loads of memory. It's got ~50% cpu load. The iotop doesn't seem to point at any specific processes - some bursts of writes here and there (mostly cron…
viraptor
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How to remove "._" files in a directory? Ubuntu

Is there a command line to remove all "._foo.html" files in a directory on Unbuntu?
Christopher Altman
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Linux: Case-INSENSITIVE Filesystem

What methods are there to make the Linux filesystem case-INSENSITIVE ? I have asp.net applications developed on Windows, but there are always issues with capitalization/spelling on mono when putting it on Linux. One way is to mount a localhost SMB…
Quandary
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What are the differences between ext3, ext4 , ReiserFS?

And why should I pick one instead of the other?
Andrea Ambu
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Listing the largest files on disk in Windows

I'm after a list of the largest files on a windows box, i.e. Not just in one folder, but anywhere on the disk. Is there any easy way of getting this?
Codebeef
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