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--- docs:tips_n_tricks:luks.html [17.12.2015 03:15 CET] – [LUKS, cryptdisk an resizefs] peter
+++ docs:tips_n_tricks:luks.html [21.08.2022 19:06 CEST] (current) – [Resize an encrypted LV managed by cryptsetup] peter
@@ Line 2: / Line 2: @@
 ===== Resize an encrypted LV managed by cryptsetup =====
-While it is quite straight(([[http://www.google.com/?q=LVM+LUKS+resize2fs]])) forward to resize any stack of LUKS, ext2,3,4, LVM, MSDOS or GPT partitions, it becomes strange if you're using Ubuntus package //cryptsetup// ((Consisting of ''/etc/crypttab'' and ''cryptdisks_''(''start''|''stop'') ))
+While it is seems to be quiet obvious for most people
+(([[https://help.ubuntu.com/community/ResizeEncryptedPartitions|Help Ubuntu]],
+[[http://www.linuxquestions.org/questions/linux-general-1/resize-lvm-insize-luks-4175543023/|Linuxquestions]],
+[[http://serverfault.com/questions/394902/resizing-a-luks-encrypted-volume|Serverfault]],
+[[https://debianforum.de/forum/viewtopic.php?f=27&t=148210|debianforum]],
+[[https://wiki.archlinux.org/index.php/Resizing_LVM-on-LUKS|Archlinux Forum]],
+[[https://forum.ubuntuusers.de/topic/luks-partition-vergroessern.-ohne-lvm/|Ubuntuusers]],
+[[http://www.google.com/?q=LVM+LUKS+resize2fs|All the Rest]]
+))
+how to resize any stack of LUKS, ext2,3,4, LVM, MSDOS or GPT partitions, it becomes strange if you're using Ubuntus package //cryptsetup// ((Meaning, if you are using ''/etc/crypttab'' and ''cryptdisks_''(''start''|''stop'') for automatic handling of mounts))
   ~ # lvresize -L 22.5G /dev/vg_sys/lv_home
@@ Line 26: / Line 35: @@
 {{entry>Linux}}
 {{entry>LVM}}
+{{entry>LUKS}}
 {{entry>cryptsetup}}
 {{entry>resize2fs}}
-{{tag>Linux LVM cryptsetup resize2fs}}
+{{tag>Linux LVM LUKS cryptsetup resize2fs}}
+===== Prepare for low memory systems =====
+Get current memory need:
+  cryptsetup luksDump /dev/<device> | fgrep Memory
+Set new memory need:
+  cryptsetup luksConvertKey --key-file /path/to/keyfile --pbkdf-memory=10240 /dev/<device>
+__References__:
+  * https://unix.stackexchange.com/a/687497
+===== Gnome Keyring =====
+//Not exactly LUKS related, but shows up in the context//
+==== Reset LUKS password accidently stored "forever" ====
+  gnome-keyring-daemon -r
+Reference:
+  * https://askubuntu.com/questions/1059797/ubuntu-16-04-encrypted-usb-disk-key-not-showing-up-in-seahorse
+==== Change default answer to LUKS password question (e.g.) in Thunar ====
+Reference article seems to be out of date.
+Reference
+  * https://askubuntu.com/questions/509906/is-it-possible-to-make-forget-password-immediately-the-default-when-opening-lu
+  * https://bugzilla.gnome.org/show_bug.cgi?id=587909 (from https://superuser.com/questions/1625494/how-to-default-nemo-to-forget-luks-password)
+==== List all available secrets ====
+//Um .. aeh ... really 8-O//
+  apt install libsecret-1-dev
+  git clone https://gitlab.com/GrantMoyer/lssecret.git
+  cd lssecret
+  make
+  DESTDIR=/usr/local/lssecret make install
+  ln -s ../lssecret/bin/lssecret /usr/local/bin
+  lssecret -s
+References:
+  * https://gitlab.gnome.org/GNOME/libsecret/-/issues/29
+  * https://gitlab.com/GrantMoyer/lssecret