| commit | author | age | ||
| 4e8e57 | 1 | |
| OB | 2 | * fork |
| 3 | ||
| 4 | --> fork()---->if (pid==oldpid) parent; | |
| 5 | | | |
| 6 | | | |
| 7 | +-------->if (pid==oldpid) child; ----> execve() | |
| 8 | ||
| 9 | * LVM | |
| 10 | ||
| 11 | ||
| 12 | #+begin_src ditaa :file lvm.png :cmdline -E -s 0.8 | |
| 13 | ||
| 14 | ||
| 15 | Harddisk: vda Harddisk: vdb Harddisk: vdc | |
| 16 | +-----------------+ +-----------------+ +-----------------+ | |
| 17 | |vda1 | |vdb1 | |vdc1 | | |
| 18 | | | | | | | | |
| 19 | +---+-----------------+---------+-----------------+--------+-----------------+-----+ | |
| 20 | |VG |vda2 <- pvcreate | |vdb2 <- pvcreate | |vdc2 <- pvcreate | | | |
| 21 | | |Physical Extends | | | | | | | |
| 22 | | |(PE) | | | | | | | |
| 23 | | |-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-| | | |
| 24 | | |1| | | |4|5| | | | |2|9| | |4|5| | | | |3| | | | | | | | | | | |
| 25 | | |-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-| | | |
| 26 | | | | | | | | | |7|8| | | | | | | | | | | | | | | | | | | | | | | |
| 27 | | +-----------------+ +-----------------+ +-----------------+ | | |
| 28 | | | | |
| 29 | +----------------------------------------------------------------------------------+ | |
| 30 | | | | | |
| 31 | v v v | |
| 32 | +---------------------+ +---------------------+ +---------------------+ | |
| 33 | |Logical Volume (LV) | |Logical Volume (LV) | |Logical Volume (LV) | | |
| 34 | |Logical Extends (LE) | |Logical Extends (LE) | |Logical Extends (LE) | | |
| 35 | |Stripe (RAID 0) | |Mirror (RAID 1) | |ConCat (RAID 0) | | |
| 36 | |-+-+-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-+-+-| |-+-+-+-+-+-+-+-+-+-+-| | |
| 37 | |1|2|3| | | | | | | | | |4|5| | | | | | | | | | |7|8|9| | | | | | | | | | |
| 38 | +---------------------+ +---------------------+ +---------------------+ | |
| 39 | #+end_src | |
| 40 | ||
| 41 | ||
| 42 | * I-Node (Information Node) (1024/4096/...) | |
| 43 | ||
| 44 | | i-num | 42 | | |
| 45 | | size | 123876 | | |
| 46 | | owner | root | | |
| 47 | | group | sys | | |
| 48 | | permissions | 755 | | |
| 49 | | ACLs | | | |
| 50 | | SELinux | default_t | | |
| 51 | | a_time (access) | | | |
| 52 | | c_time (change) | | | |
| 53 | | m_time (modification) | | | |
| 54 | | link-count | 2 | | |
| 55 | | datablock | "hello world" | | |
| 56 | | pointer-block | -> dataX | | |
| 57 | | indirect pointer block | -> pointerX | | |
| 58 | ||
| 59 | ||
| 60 | * Directory | |
| 61 | ||
| 62 | (data block einer i-Node) | |
| 63 | ||
| 64 | | Name | i-Num | | |
| 65 | |----------+-------| | |
| 66 | | . | 23 | | |
| 67 | | .. | 7 | | |
| 68 | | test.txt | 42 | <- link | |
| 69 | | hallo | 153 | | |
| 70 | | foobar | 96 | | |
| 71 | | blahblah | 42 | <- link | |
| 72 | | test123 | 15 | | |
| 73 | | | | | |
| 74 | ||
| 75 | ln <src> <dest> # link | |
| 76 | ln -s <src> <dest> # symbolic link | |
