Some fixes to uuid/fs-label stuff

[grml-tips.git] / grml_tips

diff --git a/grml_tips b/grml_tips
index 09a8305..8bd37e3 100644 (file)
--- a/grml_tips
+++ b/grml_tips
@@ -1756,12 +1756,16 @@ Start X and lock console via exiting:
 
 % startx 2>~/.xsession-errors &| exit
 -- 
-Which process is writing to disk?
+Which process is writing to disk and/or causes the disk to spin up?
+
+First of all use lsof to check what's going on. Does not help? ->
 
 # echo 1 > /proc/sys/vm/block_dump
 
-Warning: you must disable syslogd before you do this, or you must
-make sure that kernel output is not logged.
+The command sets a sysctl to cause the kernel to log all disk
+writes. Please notice that there is a lot of data.  So please
+disable syslogd/syslog-ng before you do this, or you must make
+sure that kernel output is not logged.
 
 When you're done, disable block dump using:
 # echo 0 > /proc/sys/vm/block_dump
@@ -1769,6 +1773,10 @@ When you're done, disable block dump using:
 Alternative:
 laptop-mode-tools provides a tool named lm-profiler (laptop mode profiler)
 which handles block_dump on its own.
+
+See: $KERNEL-SOURCE/Documentation/laptop-mode.txt
+
+Also take a look at event-viewer(8) which is part of grml-debugtools.
 -- 
 Install initrd via initramfs-tools for currently running kernel:
 
@@ -2069,10 +2077,13 @@ xfs without vol_id:
 # xfs_admin -l /dev/sda1
 
 reiserfs without vol_id:
-# debugreiserfs /dev/sda1 | grep UUID
+# debugreiserfs /dev/sda1 | grep -i label
+
+jfs without vol_id:
+# jfs_tune -l /dev/sda1 | grep -i label
 
 reiser4 without vol_id:
-# debugfs.reiser4 /dev/sda1 | grep uuid
+# debugfs.reiser4 /dev/sda1 | grep -i label
 -- 
 Check filesystem's UUID:
 
@@ -2080,16 +2091,41 @@ generic way:
 # vol_id -u /dev/sda1
 
 ext2/3 without vol_id:
-# dumpe2fs /dev/sda1 | grep UUID
+# dumpe2fs /dev/sda1 | grep -i UUID
 
 xfs without vol_id:
 # xfs_admin -u /dev/sda1
 
 reiserfs without vol_id:
-# debugreiserfs /dev/sda1 | grep LABEL
+# debugreiserfs /dev/sda1 | grep -i UUID
 
 reiser4 without vol_id:
-# debugfs.reiser4 /dev/sda1 | grep label
+# debugfs.reiser4 /dev/sda1 | grep -i UUID
+-- 
+Change a filesystem's LABEL:
+
+swap:
+# mkswap -L $LABEL /dev/sda1
+
+ext2/ext3:
+# e2label /dev/sda1 $LABEL
+# tune2fs -L $LABEL /dev/sda1
+
+reiserfs:
+# reiserfstune -l $LABEL /dev/sda1
+
+jfs:
+# jfs_tune -L $LABEL /dev/sda1
+
+xfs:
+# xfs_admin -L $LABEL /dev/sda1
+
+fat/vfat:
+# echo 'drive i: file="/dev/sda1"' >> ~/.mtoolsrc
+# mlabel -s i:$LABEL
+
+ntfs:
+# ntfslabel $LABEL /dev/sda1
 -- 
 Disable pdiffs feature of APT:
 
@@ -2380,17 +2416,6 @@ EOF
 Start dnsmasq finally:
 # Restart dnsmasq
 -- 
-Find out which process(es) cause the disk to spin up:
-
-# echo 1 > /proc/sys/vm/block_dump
-
-The command sets a sysctl to cause the kernel to log all disk
-writes. Please notice that there is a lot of data.
-
-See: $KERNEL-SOURCE/Documentation/laptop-mode.txt
-
-Also take a look at event-viewer(8).
--- 
 Display stats about memory allocations performed by a program:
 
 Usage example for 'ls':