X-Git-Url: https://git.grml.org/?a=blobdiff_plain;f=grml_tips;h=4fa526361d41e0573e0c2fbaf905600fa4fb113c;hb=29e0710307bf2717859cd61f3f315eae87f56d0f;hp=5cce08e8f86961d0e8ab77fed35278894049c380;hpb=540a674d23e4a8ea690f2f8bc12a525fa52961c8;p=grml-tips.git

diff --git a/grml_tips b/grml_tips
index 5cce08e..4fa5263 100644
--- a/grml_tips
+++ b/grml_tips
@@ -3057,3 +3057,34 @@ umount -l /cdrom
 eject /dev/cdrom
 echo b > /proc/sysrq-trigger
 -- 
+Show what happens on /dev/sda0:
+
+# mount the debugfs to relay kernel info to userspace
+mount -t debugfs none /sys/kernel/debug
+
+# is a convenient wrapper arround blktrace and blkparse
+btrace /dev/sda0
+-- 
+Convert Flash to Avi:
+
+% ffmpeg -i input.flv output.avi
+-- 
+Usage example for cryptsetup / -luks encrypted partition on LVM:
+
+volume group name:   x61
+logical volume name: home
+
+echo "grml-crypt_home /dev/mapper/x61-home none luks" >> /etc/crypttab
+Start cryptdisks
+mount /dev/mapper/grml-crypt_home /mnt/test
+-- 
+fdisk/parted/... complains with something like
+'unable to open /dev/sda - unrecognised disk label'?!
+
+See http://grml.org/faq/#fdisk =>
+
+* use /sbin/fdisk.distrib from util-linux
+* switch to sfdisk, cfdisk,...
+* use parted's mklabel command (but please read the
+  parted manual before executing this command)
+--