Chapter 22 Exercise 1 encryption
So a ran this on Fedora 33, After putting the loop partition in my fstab and rebooting, my system failed to boot and dropped me into a recovery shell. After quoting out the fstab line, I was fine. I then went through the process again and had the same issue.
not entirely sure what the outcome of this is supposed to be.
been stuck with this for a couple of days
Thanks
Tim
Lake Hiawatha NJ
Comments
-
need more information, in particular:
1) can you mount the encrypted partition when the system is up, not at boot
2) show us /etc/fstab relevant parts
3) Show us what the failure message looks like.
Please note this exercise is *not** designed to work for a loop partition! If you did it for a loop, you have to make sure the filesystem the loop file is mounted on is mounted first for obvious reasons. Generally, mounting an encrypted loop partition at boot sounds like a pain. It makes more sense to mount on demand as needed.
0 -
Ok ....thats kind of what I thought. So I can't mount a loop partition on on boot? The only reason I was doing that was to do the exercise without having to make an actual drive partition . here's my fstab with the offending line commented out. But I asume the issue is with the loop partition
UUID=767a9bf0-5c19-4246-bfb3-b4b4798fbb6a / ext2 usrquota,grpquota 0 1
UUID=9570-EA41 /boot/efi vfat umask=0077,shortname=winnt 0 2
UUID=9ba2a77f-5527-4d1a-b8ca-2700a1a93b79 /home ext4 defaults 1 2/dev/mapper/secret-disk /secret ext4 defaults 1 2
0 -
try mounting an unencrypted loop partition first, to make sure the problem is not with your encryption configuration file, /etc/crypttab.
Keep in mind you not only have to have the earlier filesystem mounted, you need to have /etc to be read and /dev/mapper to be set up, which means various kernel modules may have to be loaded, depending on your distribution and kernel version (neither of which you have specified)
This is all possible to make work, but I think it is of little value. If you are going to be prompted for a password during boot you slow things down for a partition which is probably not essential for system start up. If you set it up without a password, what's the point?
But setting up a loop-type file at boot is sensible; I do it every day. For example I have in my /etc/fstab:
/usr/src/KERNELS.sqfs /usr/src/KERNELS squashfs loop 0 0
which is using the squashfs filesystem (compressed, read only) . This uses a 3 GB file to mount 15GB of storage
0
Categories
- All Categories
- 51 LFX Mentorship
- 104 LFX Mentorship: Linux Kernel
- 576 Linux Foundation IT Professional Programs
- 304 Cloud Engineer IT Professional Program
- 125 Advanced Cloud Engineer IT Professional Program
- 53 DevOps Engineer IT Professional Program
- 61 Cloud Native Developer IT Professional Program
- 5 Express Training Courses
- 5 Express Courses - Discussion Forum
- 2.1K Training Courses
- 19 LFC110 Class Forum
- 7 LFC131 Class Forum
- 27 LFD102 Class Forum
- 158 LFD103 Class Forum
- 21 LFD121 Class Forum
- 1 LFD137 Class Forum
- 61 LFD201 Class Forum
- 1 LFD210 Class Forum
- LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 612 LFD259 Class Forum
- 105 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFD273 Class Forum
- 2 LFS145 Class Forum
- 25 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 11 LFS203 Class Forum
- 75 LFS207 Class Forum
- 300 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 37 LFS243 Class Forum
- 11 LFS244 Class Forum
- 37 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 141 LFS253 Class Forum
- LFS254 Class Forum
- 1.1K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 93 LFS260 Class Forum
- 132 LFS261 Class Forum
- 33 LFS262 Class Forum
- 80 LFS263 Class Forum
- 15 LFS264 Class Forum
- 11 LFS266 Class Forum
- 18 LFS267 Class Forum
- 18 LFS268 Class Forum
- 23 LFS269 Class Forum
- 203 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- LFS281 Class Forum
- 236 LFW211 Class Forum
- 172 LFW212 Class Forum
- 7 SKF100 Class Forum
- SKF200 Class Forum
- 903 Hardware
- 219 Drivers
- 74 I/O Devices
- 44 Monitors
- 116 Multimedia
- 209 Networking
- 101 Printers & Scanners
- 85 Storage
- 763 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 142 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 479 Linux System Administration
- 41 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 78 Network Management
- 108 System Management
- 49 Web Management
- 68 Mobile Computing
- 23 Android
- 30 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 538 Off Topic
- 131 Introductions
- 217 Small Talk
- 22 Study Material
- 826 Programming and Development
- 278 Kernel Development
- 514 Software Development
- 928 Software
- 260 Applications
- 184 Command Line
- 3 Compiling/Installing
- 76 Games
- 316 Installation
- 61 All In Program
- 61 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)