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Sep
26
comment How to manually setup grub on a seperate boot partition with LVM over LUKS full disk encryption?
@NRahl That's the initramfs, not grub, having issues finding the root partition because it's encrypted. You probably need to chroot in again and run update-initramfs -uk all, which should update the initramfs and include the appropriate LUKS decryption hooks. To have that do its job correctly, make sure that /etc/fstab and /etc/crypttab have correct entries before updating the initramfs.
Sep
25
answered Is setting 'discard' on a partition exposed through LVM sufficient?
Sep
17
comment An archiving strategy that will allow me to view file contents without uncompressing to disk
If you are on Linux, you can use squashfs, which was designed for what you described.
Sep
7
comment Encrypt disk volume with LUKS, enable access without passphrase
Note that the master key (i.e., the encryption key of the underlying block cipher) of a LUKS volume cannot be changed without re-encrypting the entire volume; changing a passphrase merely re-encrypts the master key under a new passphrase-derived key. In the second step, under any scheme that does not perform a full re-encryption of the data, the user cannot feasibly verify whether a copy of the master key has been stored by the creator, or by anyone who once obtained access (whether authorized or not) to the volume.
Sep
1
awarded  Critic
Aug
1
comment Why is moving files between btrfs subvolumes an expensive operation?
This doesn't answer your question, but you may be interested to know that from coreutils 8.24 (released July 3, 2015) onward, mv will try a reflink before falling back to a standard copy (changelog).
Jul
30
answered Documentation for BTRFS shorthand?
Sep
19
awarded  Yearling
Jun
30
awarded  Nice Answer
Dec
16
answered Extract URL from text with multiple URLs using sed
Nov
27
awarded  Notable Question
Oct
20
awarded  Enthusiast
Jul
17
awarded  Scholar
Jul
17
accepted Seagate Momentus XT corrupting files (Linux and Mac)
Jan
7
awarded  Announcer
Dec
10
comment MemTest is returning large numbers of errors in Test 7, no matter what ram I use
sudo cp will set root as the owner of the copied file, so the chown is not necessary (but it was a good idea). Note, though, that sudo mv will not set root as the owner of the moved file. Also, instead of sudo chown root, you would usually want sudo chown root:root to set both the user and group ownerships to root.
Dec
10
comment MemTest is returning large numbers of errors in Test 7, no matter what ram I use
Hmm... I think gunzip is included by default. In any case, I'm not sure why that's not working, but we just want to get the Memtest86+ ISO into the /boot/images/ directory, so here's another way: Download the memtest86+-4.20.iso.gz file normally through your web browser, and open the directory containing it. Right click on the file and select 'Extract here'. Now run sudo cp /path/to/download/mt420.iso /boot/images/memtest86+-4.20.iso to copy the extracted file into the /boot/images/ directory. Then follow up with sudo update-grub2. Let me know if you run into problems.
Dec
9
revised MemTest is returning large numbers of errors in Test 7, no matter what ram I use
Fixed spelling.
Dec
9
awarded  Supporter
Dec
9
comment What else can cause memtest failures?
This is a known bug in the Memtest86+ distributed with Ubuntu 12.10. See my answer to this duplicate question.