linux-ext4 - Create ext2 filesystem from a directory

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 19 Feb 2019 08:03:33 +0000
From:   "Richard W.M. Jones" <rjones@...hat.com>
To:     linux-ext4@...r.kernel.org
Subject: Create ext2 filesystem from a directory

This might interest/disgust/shock/scare(?!) people on this list:

$ time ./nbdkit --filter=partition -U - linuxdisk . partition=1 --run 'qemu-img convert $nbd /var/tmp/ext2fs.img'

real   0m1.314s
user   0m0.424s
sys    0m0.889s

$ ls -lh /var/tmp/ext2fs.img 
-rw-r--r--. 1 rjones rjones 351M Feb 19 07:44 /var/tmp/ext2fs.img

Code here:

https://github.com/rwmjones/nbdkit/commit/6e7908c828e60f082d84d866070fe8406e6f2b04

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v