FileSystems - Revision history

Porcelinux: /* generate key-file */

2022-01-21T15:58:04Z

generate key-file

← Older revision		Revision as of 15:58, 21 January 2022
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	umount /dev/sdf1		umount /dev/sdf1
	cryptsetup luksClose /dev/mapper/crypdisk		cryptsetup luksClose /dev/mapper/crypdisk
	=== ~~generate~~ key-file ===		=== key-file ===
	dd if=/dev/random of=/root/~~crypdisk.key~~ bs=512 count=1		* generate
			dd if=/dev/random of=/root/random_data_keyfile1 bs=512 count=1
			* add a password to a device
			cryptsetup luksAddKey /dev/sda
			Enter any existing passphrase:
			* add key-file to device
			cryptsetup luksAddKey /dev/sda /root/random_data_keyfile1

	=== permanent mounting ===		=== permanent mounting ===
	* the file to store information to mount the partitions at boot is '''/etc/crypttab''' , similar to '''/etc/fstab'''		* the file to store information to mount the partitions at boot is '''/etc/crypttab''' , similar to '''/etc/fstab'''

2014-04-18T12:10:56Z

encryption

@@ Line 33: / Line 33: @@
 * the officialjournalized Linux file system
-== encryption ==
+== Disk Labels ==
 In my examples I'll use the following information:

2013-12-03T15:37:32Z

Sizes

2013-12-03T15:37:20Z

Sizes

← Older revision		Revision as of 15:37, 3 December 2013
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	Kilobyte - KB 1024 Bytes		Kilobyte - KB 1024 Bytes
	Megabyte - MB 1024 ~~KBs~~		Megabyte - MB 1024 KB
	Gigabyte - GB 1024 ~~MBs~~		Gigabyte - GB 1024 MB
	Terabyte - TB 1024 ~~GBs~~		Terabyte - TB 1024 GB
	Petabyte - PB 1024 ~~TBs~~		Petabyte - PB 1024 TB
	Exabyte - EB 1024 ~~PBs~~		Exabyte - EB 1024 PB
	Zettabyte - ZB 1024 ~~EBs~~		Zettabyte - ZB 1024 EB
	Yottabyte - YB 1024 ~~ZBs~~		Yottabyte - YB 1024 ZB

	== print a list of directories with more files ==		== print a list of directories with more files ==

2013-12-03T13:58:08Z

= print a list of directories with more files

← Older revision		Revision as of 13:58, 3 December 2013
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	Yottabyte - YB 1024 ZBs		Yottabyte - YB 1024 ZBs

	== print a list of directories with more files =		== print a list of directories with more files ==
	find . -xdev -type f \| cut -d "/" -f 2 \| sort \| uniq -c \| sort -n		find . -xdev -type f \| cut -d "/" -f 2 \| sort \| uniq -c \| sort -n

2013-11-20T09:47:32Z

← Older revision		Revision as of 09:47, 20 November 2013
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	Yottabyte - YB 1024 ZBs		Yottabyte - YB 1024 ZBs

			== print a list of directories with more files =
			find . -xdev -type f \| cut -d "/" -f 2 \| sort \| uniq -c \| sort -n

	== SSD ==		== SSD ==
	* ssh drives behave differently from disks, to allow proper use of the TRIM command in delete ~~operaions~~, I must use ext4 and enable this feauture in the /etc/fstab file:		* ssh drives behave differently from disks, to allow proper use of the TRIM command in delete operations, I must use ext4 and enable this feauture in the /etc/fstab file:
	/dev/sda1 / ext4 rw,defaults,discard 1 1		/dev/sda1 / ext4 rw,defaults,discard 1 1

2013-11-20T09:37:14Z

2013-10-25T13:19:02Z

SSD

← Older revision		Revision as of 13:19, 25 October 2013
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	issue_discards = 1		issue_discards = 1

			* trim manually the root filesystem
			fstrim -v /

	== ext2 ==		== ext2 ==

2013-10-25T13:18:22Z

SSD

← Older revision		Revision as of 13:18, 25 October 2013
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	* ssh drives behave differently from disks, to allow proper use of the TRIM command in delete operaions, I must use ext4 and enable this feauture in the /etc/fstab file:		* ssh drives behave differently from disks, to allow proper use of the TRIM command in delete operaions, I must use ext4 and enable this feauture in the /etc/fstab file:
	/dev/sda1 / ext4 rw,defaults,discard 1 1		/dev/sda1 / ext4 rw,defaults,discard 1 1

			* SSD in LVM
			/etc/lvm/lvm.conf

			issue_discards = 1

	== ext2 ==		== ext2 ==

2013-10-24T07:47:22Z

ext4 (not ext4dev anymore)