The last few days i am working with febootstrap.
febootstrap is a tool to build a tiny linux appliance based on your system.
To build an appliance, febootstrap downloads every package it needs from the internet, using the defined repositories on your pacman.conf file.
If you want to test different packages or you have to build libguestfs, febootstrap will try to download again and again the packages from the internet.
The main reason is that it use a custom cachedir and root dir for fakeroot to take place and setup your new appliance.
I work-around that i posted a guide a few days back here. But that guide is telling you to edit your basic pacman.conf.
The developer of febootstrap, Richard WM Jones has a great amount of tolerance so i’ve bugged him enough to think about adding at febootstrap a command option for using your own pacman.conf file.
From today we (archers) can use febootstrap (from git at the moment - PKGBUILD is here) with our own custom pacman.conf file.
Below is a quick setup of using your own local/custom-repo/mirror with febootstrap without editing /etc/pacman.conf file.
If you have already downloaded or saved your packages to a custom location, you can bypass the first step.
The whole process doesnt need root privileges.
Step One:
$ mkdir -pv /tmp/cachedir
$ cp /var/cache/pacman/pkg/*pkg.tar.xz /tmp/cachedir/
$ repo-add /tmp/cachedir/local.db.tar.gz /tmp/cachedir/*
Step Two:
$ cp /etc/pacman.conf /tmp/
$ vim /tmp/pacman.conf
comment out the exist repo sections: core - extra - community
add the below lines
[local]
SigLevel = Never
Server = file:///tmp/cachedir/
Step three :
test it !
$ febootstrap -o /tmp/ -v --names rsync --packager-config /tmp/pacman.conf
greek post - random thoughts
Τον τελευταίο καιρό, όλο και περισσότερο διαβάζω για τα παράπονα και την γκρίνια των:
- σε ποιον ανήκουν τα tweet μου,
- σε ποιον οι φωτογραφίες μου,
- σε ποιον το profile μου
- σε ποιον τα προσωπικά μου δεδομένα
κι άλλα τέτοια.
Την “δημόσια” αρχή έκανε το facebook εδώ και μερικά χρόνια, αλλά ούτε η google - αλλά ούτε και καμία άλλη εταιρεία (data mining) δεν “διευκρινίζει” ξεκάθαρα ότι τα δεδομένα που εισάγεις - τους ανήκουν!
Αλλά τους ανήκουν.
Σάλος για το archive του twitter! Όταν δεις τι έχεις αναρτήσει … θα καταλάβεις ότι το χρησιμοποιείς λάθος.
πχ στην yahoo δεν μπορείς να διαγράψεις το profile σου - όπως και στο facebook πριν από λίγο καιρό.
Πιστεύεις δλδ όταν πατάς διαγραφή - αυτό ως δια μαγείας - διαγράφεται αυτόματα από παντού - από όλα τις συσχετίσεις - από όλα τα backup files ?
Κι όταν εγώ σε “δηλώσω” πάνω σε μια φωτογραφία; Αυτό θεωρείς ότι διαγράφεται;
Δεν θέλω να μείνω στο νομικό πλαίσιο - δεν έχω καν την διάθεση να μιλήσω για αυτό.
Ας γυρίσουμε λίγα χρόνια πίσω (πριν το 1999)
Στην αρχή του internet ήταν αυτονόητο ότι θα χρησιμοποιήσεις κάποιο handle κι όχι το πραγματικό σου όνομα. Πχ. Crash Override
Ποτέ δεν συμπλήρωνες καμία σελίδα με προσωπικά δεδομένα και ποτέ μα ποτέ δεν έκανες εγγραφή σε μια λίστα για DEALS ή που σου υπόσχεται 95% έκπτωση.
Και τώρα;
Τώρα ανεβάζεις προσωπικές φωτογραφίες:
δλδ την φωτογραφία με την γυναίκα σου και το νεογέννητο παιδί σου κάτω από το χριστουγεννιάτικο δέντρο, δίπλα στο τζάκι με ανοιχτό το χρηματοκιβώτιο να φαίνονται τα λεφτά από την άλλη πλευρά η 54” τηλεόραση και στο τραπέζι οι πιστωτικές σου κάρτες να φαίνονται
κι από κάτω ως λεζάντα γράφεις: “αύριο ξεκινάμε για διακοπές μια βδομάδα στο χωριό”
ενώ η φωτογραφία έχει κρατήσει το gps στίγμα και φαίνεται ακριβώς και η διεύθυνσή σου.
Στο δρόμο για το χωριό tweetάρεις: “στο δρόμο για το χωριό - ξεκινήσαμε πριν από μια ώρα”
Μετά από μια βδομάδα - γυρνάς στο σπίτι κι ως δια - μαγείας σου έχουν πάρει την τηλεόραση, το δέντρο και σου έχουν ξηλώσει και το τζάκι από τον τοίχο!
Ακόμα αναρωτιέσαι πως;
Ούτε εγώ προσέχω ή καλύτερα ΔΕΝ προσέχω όσο θα έπρεπε.
Data Mining:
“Η πληροφορική είναι η επιστήμη που ερευνά την κωδικοποίηση, διαχείριση και μετάδοση συμβολικών αναπαραστάσεων πληροφοριών”
Φαντάσου μια εταιρεία που κατέχει yottabytes από το σύνολο του πληθυσμού χωρίς καν να τα έχει εισάγει αυτή. Τα εισάγεις εσύ για αυτούς.
Το προϊόν είσαι εσύ !
Κάνε click εδώ και να μάθεις περισσότερα: Safe Browsing
Προσθήκη: Please Rob Me via comzeradd
There is an updated blog post about febootstrap. Click here
At some point, especially if you are using libguestfs, you will end up using febootstrap.
febootstrap is a tool to build a supermin appliance to boot strap a tiny base.img with the packages you need.
febootstrap support archlinux so we (archers) can use febootstrap or libguestfs based on an archlinux boot strap tiny appliance. So no extra work for archlinux in rescue virtual-machines or mount virtual disks.
febootstrap has the ability of searching through Arch User Repository to include any extra packages that dont exist in default repositories. This isnt the right way of installing packages from aur … but for lazy people febootstrap seems to do exactly what it should be.
Yesterday i’ve sent my first tiny ocaml patch at febootstrap for changing the location of aur packages.
You can check the patch here.
Hopefully its ok.
Today i want to write down the right way of installing extra packages from aur. The main reason is that aur has a lot of flagged-out-of-date packages and some of them are really … lets say the PKGBUILDs arent up-to-date or with proper dependencies. I am not expert in archlinux packaging so this from a user perspective guide.
1.
First, download the PKGBUILD you want (or use a customize abs PKGBUILD) of the package you need to install in febootstrap.
Check the PKGBUILD, correct the version, add checksum (for package integrity), review the dependencies, make the pkg. Check it again.
This is the most important thing. Try hard not to be lazy on this.
2.
Create the package with makepkg command. You’ll need base-devel packages for this.
Check the files inside the package
pacman -Qpl *.pkg.tar.xzbinaries must be under /usr/bin, libraries under /usr/lib
Be careful
3.
Create a new directory to hold your custom build packages from aur or abs.
eg.
mkdir -pv /opt/custom_repo/and move your *.pkg.tar.xz file (or files) under this directory
eg.
move *.pkg.tar.xz /opt/custom_repo/4.
At this point you are ready to create your custom repo db file
eg.
repo-add /opt/custom_repo/repo.db.tar.gz /opt/custom_repo/*pkg.tar.xzand
5.
append the below lines at your /etc/pacman.conf file
[repo]
SigLevel = Never
Server = file:///opt/custom_repo/
type
pacman -Syyto sync your repositories and you are done!
Now you can use febootstrap without searching in aur.archlinux.org for extra packages.
using virt-df is simple as writing df on your terminal.
Below a real life example:
# virsh list --all
Id Name State
----------------------------------------------------
1 win2003 running
4 win2008 running
# virt-df -d win2008 -h
Filesystem Size Used Available Use%
win2008:/dev/sda1 40G 38G 1.9G 96%
Έχω μονάχα ένα laptop: FUJITSU SIEMENS: Amilo Si 1520. Τα τεχνικά του χαρακτηριστικά T5600 - 1.83 GHz - 2Gb Ram. H fujitsu το κατασκεύασε το 2005, εγώ το αγόρασα στα μέσα του δεύτερου εξάμηνου του 2006. 6 χρόνια δουλεύει μέρα νύχτα και πραγματικά θα μπορούσε να σας πει μερικές τρομακτικές ιστορίες. Τον τελευταίο καιρό όμως έχει αρχίσει να φτάνει στα όρια της ζωής του. Για να είμαι ειλικρινής την έχει περάσει πολλά χρόνια τώρα, αλλά έχει αντέξει στην χρήση μου, σε χτυπήματα και σε κάτι περίεργα ρεύματα (εντός κι εκτός ελλάδος).
Ψάχνω για τον αντικαταστάτη του και τον βρήκα στο πρόσωπο του FUJITSU UH572. Αναζητώντας μέσω skroutz το βρήκα διαθέσιμο (σε απόθεμα) στην cosmodata. Κοιτώντας τα χαρακτηριστικά διαπιστώνω ότι ο επεξεργαστής είναι ο: Intel Core™ i7 3617. Θέλω να δω εάν υποστηρίζει VT-x, VT-d (Hardware Virtualization)
κάπου εδώ ξεκινά ο Γολγοθάς μου
Ψάχνω πρώτα στην Intel - Δεν υπάρχει
Ψάχνω μετά στο site της fujitsu - Δεν υπάρχει
Ψάχνω μετά στο google - Υπάρχει, αλλά μόνο σε ελληνικά online καταστήματα !!!!!!!!
Μα πως είναι δυνατόν - αναρωτιέμαι.
Τηλέφωνο στην cosmodata, ο πωλητής με συνδέει με το τεχνικό τμήμα.
-(εγώ) Ενδιαφέρομαι για ένα laptop κι έχω μια ερώτηση σχετικά με τον επεξεργαστή του.
-(τεχν) Τι πρόβλημα υπάρχει;
-(εγώ) Δεν βρίσκω πουθενά στο internet το cpu model - νομίζω ότι έχει γίνει τυπογραφικό λάθος
…
-(τεχν) δεν έχω λόγο να αμφισβητήσω τον κατασκευαστή.
-(εγώ) δεν μπορείτε εσείς να μου πείτε το μοντέλο;
-(τεχν) όχι, δεν έχω μπροστά μου το laptop
μέχρι εδώ, σχετικά καλά. Δεν περιμένω να γνωρίζει κάτι παραπάνω. Απογοητεύομαι λίγο όμως γιατί δεν μπορεί να κάνει το κάτι παραπάνω ώστε να βρει το μοντέλο και να διορθώσει το site. Ξανά πίσω στο τηλεφωνικό κέντρο - τώρα με πωλητή
-(εγώ) Ενδιαφέρομαι για ένα laptop και θέλω να έρθω να το αγοράσω από το κατάστημα.
-(πωλ) Θα πληρώσετε παραπάνω, αγοράστε το online.
-(εγώ) Δεν με ενδιαφέρει, θα πληρώσω παραπάνω. Βλέπω είναι σε απόθεμα, θέλω να έρθω από εκεί.
-(πωλ) Μα θα πληρώσετε παραπάνω!
(πρώτη φορά στην ζωή μου, βλέπω πωλητή να μην θέλει να πουλήσει ακριβότερα)
-(εγώ) δεν με απασχολεί το ποσό. Θέλω να έρθω να το αγοράσω από κάποιο κατάστημα. Θέλω να μου πείτε όμως από ποιο κατάστημα ή πότε μπορώ να περάσω για να το αγοράσω/παραλάβω. Μην έρθω και είναι σε κάποια αποθήκη κάπου μακριά.
-(πωλ) Να σας συνδέσω με κάποιον άλλο.
φαντάζομαι ο αποθηκάριος/λογιστής κάποιος που να ξέρει την τύχη του.
-(εγώ): Ενδιαφέρομαι για κάποιο laptop. Θέλω να το αγοράσω από το κατάστημα. Βλέπω είναι διαθέσιμο, πείτε μου παρακαλώ πότε μπορώ να περάσω κι από που για να το αγοράσω/παραλάβω
-(αποθ): Ποιο μοντέλο
-(εγω): το τάδε …..(κωδικός)
-(αποθ): Είστε σίγουρος;
-(εγώ): Ναι, το βλέπω μπροστά μου στο site σας
-(αποθ): Είναι καινούριο ή παλιό;
-(εγώ): Δεν ξέρω
-(αποθ): Περιμένετε
…. … … (περιμένω) …
-(αποθ): Δεν υπάρχει αυτό το laptop
-(εγώ): Μα λέτε ότι είναι διαθέσιμο!
-(αποθ): Δεν υπάρχει
Προς: Cosmodata
- Αναφέρεις ότι πουλάς ένα laptop με λανθασμένα τεχνικά χαρακτηριστικά σε απόθεμα που δεν υπάρχει. Περιμένεις δλδ τους πελάτες, να αγοράσουν διαδικτυακά, να πληρώσουν για κάτι που δεν υπάρχει, αλλά πουλάς σε απόθεμα. Αυτό λέγεται ΑΠΑΤΗ
voted for “Arch“
any screenshots ?
RT @gapan !Salix !Xfce 14.0 has been released: http://bit.ly/YjYJVh
I am using OpenId and i have a personal OpenID provider based on simpleid.
I used to be able to login to sourceforge via https://balaskas.gr but i’ve removed my SSL from my website
(My SSL cert is signed by cacert and firefox doesnt accept cacert - thats another story).
So i wanted to re-configure my sourceforce access with http and openid.
I cant !
“There was an error using your OpenID.”
My logs
216.34.181.60 - - [21/Nov/2012:08:39:33 +0200] “GET / HTTP/1.1” 200 951 “-” “Zend_OpenId”
216.34.181.60 - - [21/Nov/2012:08:39:33 +0200] “POST / HTTP/1.1” 200 951 “-” “Zend_OpenId”
i’ve opened a support ticket but i got this:
“While we certainly allow users to use custom OpenIDs, we cannot guarantee that they work with our site. As such, we’re not going spend time troubleshooting that.”
right …. custom OpenID !
for the love of Bob, i am using a personal OpenID provider - i dont have a custom openid !
This is a rather large post, so you need to have some time to read through it.
I was interested into learning/identifying how data are written on a hard disk using LVM2.
All that begun when i was trying to extract partitions from a corrupted disk with no partition table!
Steps:
- Create a disk image
- Create Physical Volume
- Create Volume Group
- Create Logical Volume
- Format Filesystem
using only basic cmds [ du, fdisk, file, hexdump, losetup, strings, truncate ] and LVM2 basic cmds.
to reduce the size of this post, the latest couple hexdumps are located in separate files (12K and 172K) provide them with links.
Plz click on them just to see the output. They are very interesting.
So lets start
A. Create disk image file
# truncate -s 5G file.img
# du file.img
0 file.img
# du --apparent-size file.img
5242880 file.img
# qemu-img info file.img
image: file.img
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 0
# losetup /dev/loop1 file.img
# fdisk -l /dev/loop1
Disk /dev/loop1: 5368 MB, 5368709120 bytes, 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
B. Create Physical Volume
# pvcreate /dev/loop1
# pvck -v /dev/loop1
Scanning /dev/loop1
Found label on /dev/loop1, sector 1, type=LVM2 001
Found text metadata area: offset=4096, size=1044480
# pvdisplay
"/dev/loop1" is a new physical volume of "5,00 GiB"
--- NEW Physical volume ---
PV Name /dev/loop1
VG Name
PV Size 5,00 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr
# file file.img
file.img: LVM2 PV (Linux Logical Volume Manager), UUID: Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr, size: 5368709120
# qemu-img info file.img
image: file.img
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 8.0K
# du -k file.img
8 file.img
# du --apparent-size file.img
5242880 file.img
# hexdump -C file.img
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000200 4c 41 42 45 4c 4f 4e 45 01 00 00 00 00 00 00 00 |LABELONE........|
00000210 58 36 35 f2 20 00 00 00 4c 56 4d 32 20 30 30 31 |X65. ...LVM2 001|
00000220 5a 68 36 37 61 6a 78 41 56 36 77 42 6f 77 71 66 |Zh67ajxAV6wBowqf|
00000230 57 39 32 47 55 35 78 57 45 65 65 48 44 6d 72 72 |W92GU5xWEeeHDmrr|
00000240 00 00 00 40 01 00 00 00 00 00 10 00 00 00 00 00 |...@............|
00000250 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000260 00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 |................|
00000270 00 f0 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000280 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00001000 16 d6 8e db 20 4c 56 4d 32 20 78 5b 35 41 25 72 |.... LVM2 x[5A%r|
00001010 30 4e 2a 3e 01 00 00 00 00 10 00 00 00 00 00 00 |0N*>............|
00001020 00 f0 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00001030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
# strings -t d file.img
512 LABELONE
536 LVM2 001Zh67ajxAV6wBowqfW92GU5xWEeeHDmrr
4100 LVM2 x[5A%r0N*>
C. Create Volume Group
# vgcreate volgr01 /dev/loop1
Volume group "volgr01" successfully created
# vgdisplay
--- Volume group ---
VG Name volgr01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 5,00 GiB
PE Size 4,00 MiB
Total PE 1279
Alloc PE / Size 0 / 0
Free PE / Size 1279 / 5,00 GiB
VG UUID Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK
# file file.img
file.img: LVM2 PV (Linux Logical Volume Manager), UUID: Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr, size: 5368709120
# qemu-img info file.img
image: file.img
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 8.0K
# du -k file.img
8 file.img
# du --apparent-size file.img
5242880 file.img
# hexdump -C file.img
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000200 4c 41 42 45 4c 4f 4e 45 01 00 00 00 00 00 00 00 |LABELONE........|
00000210 58 36 35 f2 20 00 00 00 4c 56 4d 32 20 30 30 31 |X65. ...LVM2 001|
00000220 5a 68 36 37 61 6a 78 41 56 36 77 42 6f 77 71 66 |Zh67ajxAV6wBowqf|
00000230 57 39 32 47 55 35 78 57 45 65 65 48 44 6d 72 72 |W92GU5xWEeeHDmrr|
00000240 00 00 00 40 01 00 00 00 00 00 10 00 00 00 00 00 |...@............|
00000250 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000260 00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 |................|
00000270 00 f0 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000280 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00001000 93 f4 58 bc 20 4c 56 4d 32 20 78 5b 35 41 25 72 |..X. LVM2 x[5A%r|
00001010 30 4e 2a 3e 01 00 00 00 00 10 00 00 00 00 00 00 |0N*>............|
00001020 00 f0 0f 00 00 00 00 00 00 02 00 00 00 00 00 00 |................|
00001030 c5 02 00 00 00 00 00 00 97 b4 9e 26 00 00 00 00 |...........&....|
00001040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00001200 76 6f 6c 67 72 30 31 20 7b 0a 69 64 20 3d 20 22 |volgr01 {.id = "|
00001210 55 62 32 49 53 57 2d 78 37 77 64 2d 52 38 69 79 |Ub2ISW-x7wd-R8iy|
00001220 2d 47 65 78 47 2d 4a 47 55 47 2d 45 43 49 31 2d |-GexG-JGUG-ECI1-|
00001230 6b 64 70 42 72 4b 22 0a 73 65 71 6e 6f 20 3d 20 |kdpBrK".seqno = |
00001240 31 0a 66 6f 72 6d 61 74 20 3d 20 22 6c 76 6d 32 |1.format = "lvm2|
00001250 22 20 23 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 61 |" # informationa|
00001260 6c 0a 73 74 61 74 75 73 20 3d 20 5b 22 52 45 53 |l.status = ["RES|
00001270 49 5a 45 41 42 4c 45 22 2c 20 22 52 45 41 44 22 |IZEABLE", "READ"|
00001280 2c 20 22 57 52 49 54 45 22 5d 0a 66 6c 61 67 73 |, "WRITE"].flags|
00001290 20 3d 20 5b 5d 0a 65 78 74 65 6e 74 5f 73 69 7a | = [].extent_siz|
000012a0 65 20 3d 20 38 31 39 32 0a 6d 61 78 5f 6c 76 20 |e = 8192.max_lv |
000012b0 3d 20 30 0a 6d 61 78 5f 70 76 20 3d 20 30 0a 6d |= 0.max_pv = 0.m|
000012c0 65 74 61 64 61 74 61 5f 63 6f 70 69 65 73 20 3d |etadata_copies =|
000012d0 20 30 0a 0a 70 68 79 73 69 63 61 6c 5f 76 6f 6c | 0..physical_vol|
000012e0 75 6d 65 73 20 7b 0a 0a 70 76 30 20 7b 0a 69 64 |umes {..pv0 {.id|
000012f0 20 3d 20 22 5a 68 36 37 61 6a 2d 78 41 56 36 2d | = "Zh67aj-xAV6-|
00001300 77 42 6f 77 2d 71 66 57 39 2d 32 47 55 35 2d 78 |wBow-qfW9-2GU5-x|
00001310 57 45 65 2d 65 48 44 6d 72 72 22 0a 64 65 76 69 |WEe-eHDmrr".devi|
00001320 63 65 20 3d 20 22 2f 64 65 76 2f 6c 6f 6f 70 31 |ce = "/dev/loop1|
00001330 22 0a 0a 73 74 61 74 75 73 20 3d 20 5b 22 41 4c |"..status = ["AL|
00001340 4c 4f 43 41 54 41 42 4c 45 22 5d 0a 66 6c 61 67 |LOCATABLE"].flag|
00001350 73 20 3d 20 5b 5d 0a 64 65 76 5f 73 69 7a 65 20 |s = [].dev_size |
00001360 3d 20 31 30 34 38 35 37 36 30 0a 70 65 5f 73 74 |= 10485760.pe_st|
00001370 61 72 74 20 3d 20 32 30 34 38 0a 70 65 5f 63 6f |art = 2048.pe_co|
00001380 75 6e 74 20 3d 20 31 32 37 39 0a 7d 0a 7d 0a 0a |unt = 1279.}.}..|
00001390 7d 0a 23 20 47 65 6e 65 72 61 74 65 64 20 62 79 |}.# Generated by|
000013a0 20 4c 56 4d 32 20 76 65 72 73 69 6f 6e 20 32 2e | LVM2 version 2.|
000013b0 30 32 2e 39 38 28 32 29 20 28 32 30 31 32 2d 31 |02.98(2) (2012-1|
000013c0 30 2d 31 35 29 3a 20 54 68 75 20 4e 6f 76 20 20 |0-15): Thu Nov |
000013d0 38 20 31 31 3a 33 31 3a 35 34 20 32 30 31 32 0a |8 11:31:54 2012.|
000013e0 0a 63 6f 6e 74 65 6e 74 73 20 3d 20 22 54 65 78 |.contents = "Tex|
000013f0 74 20 46 6f 72 6d 61 74 20 56 6f 6c 75 6d 65 20 |t Format Volume |
00001400 47 72 6f 75 70 22 0a 76 65 72 73 69 6f 6e 20 3d |Group".version =|
00001410 20 31 0a 0a 64 65 73 63 72 69 70 74 69 6f 6e 20 | 1..description |
00001420 3d 20 22 22 0a 0a 63 72 65 61 74 69 6f 6e 5f 68 |= ""..creation_h|
00001430 6f 73 74 20 3d 20 22 6d 79 77 6f 72 6b 22 09 23 |ost = "mywork".#|
00001440 20 4c 69 6e 75 78 20 6d 79 77 6f 72 6b 20 33 2e | Linux mywork 3.|
00001450 36 2e 36 2d 31 2d 41 52 43 48 20 23 31 20 53 4d |6.6-1-ARCH #1 SM|
00001460 50 20 50 52 45 45 4d 50 54 20 4d 6f 6e 20 4e 6f |P PREEMPT Mon No|
00001470 76 20 35 20 31 31 3a 35 37 3a 32 32 20 43 45 54 |v 5 11:57:22 CET|
00001480 20 32 30 31 32 20 78 38 36 5f 36 34 0a 63 72 65 | 2012 x86_64.cre|
00001490 61 74 69 6f 6e 5f 74 69 6d 65 20 3d 20 31 33 35 |ation_time = 135|
000014a0 32 33 36 37 31 31 34 09 23 20 54 68 75 20 4e 6f |2367114.# Thu No|
000014b0 76 20 20 38 20 31 31 3a 33 31 3a 35 34 20 32 30 |v 8 11:31:54 20|
000014c0 31 32 0a 0a 00 00 00 00 00 00 00 00 00 00 00 00 |12..............|
000014d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
# strings -t d file.img
512 LABELONE
536 LVM2 001Zh67ajxAV6wBowqfW92GU5xWEeeHDmrr
4100 LVM2 x[5A%r0N*>
4608 volgr01 {
4618 id = "Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK"
4664 seqno = 1
4674 format = "lvm2" # informational
4706 status = ["RESIZEABLE", "READ", "WRITE"]
4747 flags = []
4758 extent_size = 8192
4777 max_lv = 0
4788 max_pv = 0
4799 metadata_copies = 0
4820 physical_volumes {
4840 pv0 {
4846 id = "Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr"
4892 device = "/dev/loop1"
4915 status = ["ALLOCATABLE"]
4940 flags = []
4951 dev_size = 10485760
4971 pe_start = 2048
4987 pe_count = 1279
5010 # Generated by LVM2 version 2.02.98(2) (2012-10-15): Thu Nov 8 11:31:54 2012
5089 contents = "Text Format Volume Group"
5127 version = 1
5140 description = ""
5158 creation_host = "mywork" # Linux mywork 3.6.6-1-ARCH #1 SMP PREEMPT Mon Nov 5 11:57:22 CET 2012 x86_64
5261 creation_time = 1352367114 # Thu Nov 8 11:31:54 2012
From this point hexdump will be out of this post, so i you want (it would be useful) click on the relative links.
D. Create Logical Volume
# lvcreate -l +100%FREE -n /dev/volgr01/lv_volume
Logical volume "lv_volume" created
# lvdisplay
--- Logical volume ---
LV Path /dev/volgr01/lv_volume
LV Name lv_volume
VG Name volgr01
LV UUID OpoaHx-kD4m-9mSO-Nj7W-i7LN-2Sxg-KFhkXw
LV Write Access read/write
LV Creation host, time mywork, 2012-11-08 11:41:51 +0200
LV Status available
# open 0
LV Size 5,00 GiB
Current LE 1279
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:22
# file file.img
file.img: LVM2 PV (Linux Logical Volume Manager), UUID: Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr, size: 5368709120
# qemu-img info file.img
image: file.img
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 12K
# du -k file.img
12 file.img
# du --apparent-size file.img
5242880 file.img
# hexdump -C file.img
Click here to see the hexdump (12K)
# strings -t d file.img
512 LABELONE
536 LVM2 001Zh67ajxAV6wBowqfW92GU5xWEeeHDmrr
4100 LVM2 x[5A%r0N*>
4608 volgr01 {
4618 id = "Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK"
4664 seqno = 1
4674 format = "lvm2" # informational
4706 status = ["RESIZEABLE", "READ", "WRITE"]
4747 flags = []
4758 extent_size = 8192
4777 max_lv = 0
4788 max_pv = 0
4799 metadata_copies = 0
4820 physical_volumes {
4840 pv0 {
4846 id = "Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr"
4892 device = "/dev/loop1"
4915 status = ["ALLOCATABLE"]
4940 flags = []
4951 dev_size = 10485760
4971 pe_start = 2048
4987 pe_count = 1279
5010 # Generated by LVM2 version 2.02.98(2) (2012-10-15): Thu Nov 8 11:31:54 2012
5089 contents = "Text Format Volume Group"
5127 version = 1
5140 description = ""
5158 creation_host = "mywork" # Linux mywork 3.6.6-1-ARCH #1 SMP PREEMPT Mon Nov 5 11:57:22 CET 2012 x86_64
5261 creation_time = 1352367114 # Thu Nov 8 11:31:54 2012
5632 volgr01 {
5642 id = "Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK"
5688 seqno = 2
5698 format = "lvm2" # informational
5730 status = ["RESIZEABLE", "READ", "WRITE"]
5771 flags = []
5782 extent_size = 8192
5801 max_lv = 0
5812 max_pv = 0
5823 metadata_copies = 0
5844 physical_volumes {
5864 pv0 {
5870 id = "Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr"
5916 device = "/dev/loop1"
5939 status = ["ALLOCATABLE"]
5964 flags = []
5975 dev_size = 10485760
5995 pe_start = 2048
6011 pe_count = 1279
6032 logical_volumes {
6051 lv_volume {
6063 id = "OpoaHx-kD4m-9mSO-Nj7W-i7LN-2Sxg-KFhkXw"
6109 status = ["READ", "WRITE", "VISIBLE"]
6147 flags = []
6158 creation_host = "mywork"
6183 creation_time = 1352367711
6210 segment_count = 1
6229 segment1 {
6240 start_extent = 0
6257 extent_count = 1279
6278 type = "striped"
6295 stripe_count = 1 # linear
6322 stripes = [
6334 "pv0", 0
6353 # Generated by LVM2 version 2.02.98(2) (2012-10-15): Thu Nov 8 11:41:51 2012
6432 contents = "Text Format Volume Group"
6470 version = 1
6483 description = ""
6501 creation_host = "mywork" # Linux mywork 3.6.6-1-ARCH #1 SMP PREEMPT Mon Nov 5 11:57:22 CET 2012 x86_64
6604 creation_time = 1352367711 # Thu Nov 8 11:41:51 2012
E. Format FileSystem
# mkfs.ext2 /dev/volgr01/lv_volume
mke2fs 1.42.6 (21-Sep-2012)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
327680 inodes, 1309696 blocks
65484 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1342177280
40 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
Allocating group tables: done
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
# mount /dev/volgr01/lv_volume /mnt/
# df -h /mnt/
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/volgr01-lv_volume 5,0G 10M 4,7G 1% /mnt
# file file.img
file.img: LVM2 PV (Linux Logical Volume Manager), UUID: Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr, size: 5368709120
# qemu-img info file.img
image: file.img
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 82M
# du -k file.img
83680 file.img
# du --apparent-size file.img
5242880 file.img
# hexdump -C file.img
Click here to see the hexdump (172K)
# strings -t d file.img
512 LABELONE
536 LVM2 001Zh67ajxAV6wBowqfW92GU5xWEeeHDmrr
4100 LVM2 x[5A%r0N*>
4608 volgr01 {
4618 id = "Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK"
4664 seqno = 1
4674 format = "lvm2" # informational
4706 status = ["RESIZEABLE", "READ", "WRITE"]
4747 flags = []
4758 extent_size = 8192
4777 max_lv = 0
4788 max_pv = 0
4799 metadata_copies = 0
4820 physical_volumes {
4840 pv0 {
4846 id = "Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr"
4892 device = "/dev/loop1"
4915 status = ["ALLOCATABLE"]
4940 flags = []
4951 dev_size = 10485760
4971 pe_start = 2048
4987 pe_count = 1279
5010 # Generated by LVM2 version 2.02.98(2) (2012-10-15): Thu Nov 8 11:31:54 2012
5089 contents = "Text Format Volume Group"
5127 version = 1
5140 description = ""
5158 creation_host = "mywork" # Linux mywork 3.6.6-1-ARCH #1 SMP PREEMPT Mon Nov 5 11:57:22 CET 2012 x86_64
5261 creation_time = 1352367114 # Thu Nov 8 11:31:54 2012
5632 volgr01 {
5642 id = "Ub2ISW-x7wd-R8iy-GexG-JGUG-ECI1-kdpBrK"
5688 seqno = 2
5698 format = "lvm2" # informational
5730 status = ["RESIZEABLE", "READ", "WRITE"]
5771 flags = []
5782 extent_size = 8192
5801 max_lv = 0
5812 max_pv = 0
5823 metadata_copies = 0
5844 physical_volumes {
5864 pv0 {
5870 id = "Zh67aj-xAV6-wBow-qfW9-2GU5-xWEe-eHDmrr"
5916 device = "/dev/loop1"
5939 status = ["ALLOCATABLE"]
5964 flags = []
5975 dev_size = 10485760
5995 pe_start = 2048
6011 pe_count = 1279
6032 logical_volumes {
6051 lv_volume {
6063 id = "OpoaHx-kD4m-9mSO-Nj7W-i7LN-2Sxg-KFhkXw"
6109 status = ["READ", "WRITE", "VISIBLE"]
6147 flags = []
6158 creation_host = "mywork"
6183 creation_time = 1352367711
6210 segment_count = 1
6229 segment1 {
6240 start_extent = 0
6257 extent_count = 1279
6278 type = "striped"
6295 stripe_count = 1 # linear
6322 stripes = [
6334 "pv0", 0
6353 # Generated by LVM2 version 2.02.98(2) (2012-10-15): Thu Nov 8 11:41:51 2012
6432 contents = "Text Format Volume Group"
6470 version = 1
6483 description = ""
6501 creation_host = "mywork" # Linux mywork 3.6.6-1-ARCH #1 SMP PREEMPT Mon Nov 5 11:57:22 CET 2012 x86_64
6604 creation_time = 1352367711 # Thu Nov 8 11:41:51 2012
4468768 lost+found
RT @hackerspacegr Σήμερα στις 19.00: OpenWrt Users Meetup 0007 http://tinyurl.com/bphfm7c
I live in Greece.
I need to find some info about a product of hellenic post so i wrote at my url bar: www.elta.gr
The first page is in Greek language!!!
There is no greek words but thats okei!
You cant click on GR flag but thats okei too.
To read something in greek you have to click on gb flag and then click on gr flag !
but thats okei …
From UX point this is a disaster!
the proof:
Copying Is Not Theft http://ur1.ca/aj052
I have changed my index page to honor Dennis MacAlistair Ritchie. http://balaskas.gr/ We havent forgotten you.
To whom dont know what busybox is, plz stop using linux, android or any embedded device.
Step 1. Learn what version of kernel your device has.
my mobile use Marvel (ARMv6) kernel.
Step 2. Download your binary from here download busybox
wget -c http://www.busybox.net/downloads/binaries/latest/busybox-armv6l
Step 3. Copy busybox to your device
adb push busybox-armv6l /mnt/sdcard/
Step 4. Enter your device
adb shell
Step 5. Remount /system with read-write access
mount -o rw,remount /system
cd /system/xbin/
Step 6. Copy busybox to your system xbin dir
cp /mnt/sdcard/busybox-armv6l /system/xbin/
Step 7. Change permissions
chmod 0755 /system/xbin/busybox-armv6l
Step 8. Move your old busybox - dont remove it
cp busybox BusyBox-v1.19.4-cm7
Step 9. replace busybox
# busybox-armv6l cp busybox-armv6l busybox
simple as that !
A customer of mine, had me approached to install a virtualization solution at his company.
The first goal was portability the second productivity.
I had to find a way (transparent from their employes) to remove their work environment from their hardware.
Productivity is easy … just remove any unnecessary software and keep their desktops as clean as they can be.
“Attention Span” is the big monster.
I found that with no-sound they couldnt listen to youtube or to internet radio stations or mp3 and they had to install a radio at their office.
One radio station, one music for all. That approach was much better than every other solution i could figure out.
Imaging a work space with 15 people, how every one wants to listen to a different music/news, youtube or whatever.
That was noise - and noise is the enemy!
As for portability - we dont want to use this old hardware - was easy enough too.
I’ve built a tinycorelinux image and convert every PC to a thin or thick client.
RDP to their Terminal Server was the only thing i had to ensure is working.
Dnsmasq is the simplest and best solution to do that (PXE).
created /tftpboot/ dir and worked my way through that.
I used fedora cause it is a virtualization box with all the latest versions of software.
I wanted to test fedora and selinux wasnt so bad after all.
Till the latest upgrade!
/tftpboot directory system_u:object_r:tftpdir_t:s0
/tftpboot/.* all files system_u:object_r:tftpdir_t:s0
dnsmasq now needs dnsmasq_t
type=AVC msg=audit(1349450414.500:20456): avc: denied { read } for pid=27175 comm="dnsmasq" name="tftpboot" dev="dm-1" ino=524451 scontext=system_u:system_r:dnsmasq_t:s0 tcontext=unconfined_u:object_r:tftpdir_t:s0 tclass=dir
relabeling is out of question.
The solution is to transfer all the necessaries files to a new directory that
semanage fcontext -l
doesnt marked as something else and chcon the entire directory (recursive) to label to dnsmasq_t all files and dirs.
or to add a new policy rule that accepts dnsmasq_t for /tftpboot directory
or DISABLE selinux cause you’ll never now what else will through to you !
Its unacceptable to make such core changes without have a plan for backwards compatibility or a way to inform your faithful admin that he/shee will have a problem because you have destroyed everything he/she built the last year!.
RT @erkanyilmaz " HSTS is supported in Google #Chrome, #Firefox 4, and the popular NoScript Firefox extension”
goodbye #http, hello #hsts http://ur1.ca/ah5q0 http://ur1.ca/ah5q1
RT @samatjain python-sha3: C-based !Python module implementing new SHA-3 "Keccak" hash http://ur1.ca/ah41b