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0
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1answer
87 views

Loop device going into Readonly Mode

We are using a network Samba drive for Backup on our Linux Server. In order to store permissions (Samba does not support this), we have created a loop device to a large file (50GB) on the network ...
2
votes
1answer
431 views

Find out which loop device is behind a dev mapper blcok device

I'm using cryptsetup with loopback devices. I'm looking for a way, given a device mapping, to identify which loopback device is used by this device. i.e. get /dev/loop1 as a result of an operation on ...
-1
votes
1answer
75 views

Storage virtual machine. LVM or loop devices? [closed]

Actual situation: I'm the administrator of a virtual machine. The virtual machine is a Debian. This machine will be mainly a storage machine with different services (svn, ftp... ), and a webserver. ...
0
votes
1answer
535 views

poor performance with vmdk mounted as loop device even after conversion to raw

Edit 13/12/12 - At this stage it would appear to be related to Western Digital (and possibly others) Advanced Format 4K block sizes. This link goes some way into describing the issue, however the ...
3
votes
1answer
973 views

Cannot read device /dev/loop0

I'm trying to create a crypted drive on my loop0 device. After this command /sbin/cryptsetup create cryptedDrive /dev/loop0 I'm getting the following error Cannot read device /dev/loop0 ...
3
votes
1answer
132 views

Why make random file for loopback device for encrypted file system?

I have read a few tutorials on setting up an encrypted file system using cryptsetup. They all start with the following creation of a random file dd if=/dev/urandom of=/etc/cryptfile bs=1M count=10 ...
1
vote
1answer
675 views

Why does this loopback device creation malfunction?

The stackoverflow people thought this was more appropriate here, I put it there as it is part of a program but I can see their POV, so here it is: At the bottom of the code you can see it failing. In ...