How does the read & write request from a command prompt go to usb & retrieve the file ? When a read request is given , I/O manger sends the request to file system manager (FSM) and from FSM to mass storage device drivver and from there to mass storage , is this right in Linux ?
View 1 RepliesI have Ubuntu9.10 installed in my laptop, and I want to give read-only permission on mass storage device (USB flash & external HD) & CD-ROM.
please guide me how this is possible. It should be automatically.
It's necessary for security purpose.
My Canon PowerShot A470 + CHDK can write to SD-cards that are "locked" (the lock switch is used to make the card bootable), but GNU/Linux
`/dev/mmcblk1': Read-only file system
(I'm using "Texas Instrument 5-in-1 Multimedia Card Reader")
So I have to switch that switch on and off again and again. ("unlocked" to write to the card in Linux, "locked" to boot the camera from it).
How to force locked card to be writable in GNU/Linux?
I have a problem when trying to mount a memory card in my cell phone. I connect the phone with an USB cable, select mass storage as the phone prompts it, but no luck.
dmesg shows
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[ 200.673190] usb 3-1: new full speed USB device using ohci_hcd and address 4
[ 200.823377] usb 3-1: New USB device found, idVendor=05c6, idProduct=1000
[ 200.823386] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
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Just to be sure I tried the same thing with FreeBSD, though I knew from past experiences what to expect from it. It just worked(tm) flawlessly, but I'd rather not keep FreeBSD just for the sake of one device I can't seem to get working with Linux. All I can guess it must either be a kernel bug that has persisted for far too long or a faulty udev rule.
* I am implementing mass storage device on a test board.
* It contains NAND flash.
* Using corresponding "udc driver" and "g_file_storage" I could make my test board enumerate as mass storage device on my Linux machine.
* my 16 MB pen drive (test board) is now ready for read/write.
But there are some Bad Blocks on the NAND.Hence copy is not complete. Although on Linux machine there is no error message. Now , what is there in a normal pen drive which manages the Bad Block or what am I missing so that such Bad Blocks are managed.
Here is the error I get on my test board :
mtdblock: erase of region [0x2c0000, 0x4000] on "Bon 2" failed
end_request: I/O error, dev mtdblock2, sector 5664
Buffer I/O error on device mtdblock2, logical block 708
[code]....
I am running Lenny. USB storage devices are painfully slow, if the data to be copied is above 4GB it works on transferring for more than half an hour and then comes up with an error dialog(saying something like file size is too big). The problem exists in both read and write.
I did google a bit and here is the output of lsmod | grep hci
ehci_hcd28428 0
uhci_hcd18672 0
usbcore118192 4 usb_storage,ehci_hcd,uhci_hcd
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I've searched high and low, and can't figure this one out. I have a older Olympus Camera (2001 or so). When I plug in the USB connection, I get the following log output:
$ dmesg | grep sd
[20047.625076] sd 21:0:0:0: Attached scsi generic sg7 type 0
[20047.627922] sd 21:0:0:0: [sdg] Attached SCSI removable disk
Secondly, the drive is not mounted in the FS, but when I run gphoto2 I get the following error:
$ gphoto2 --list-config
*** Error ***
An error occurred in the io-library ('Could not lock the device'): Camera is already in use.
*** Error (-60: 'Could not lock the device') ***
What command will unmount the drive. For example in Nautilus, I can right click and select "Safely Remove Device". After doing that, the /dev/sg7 and /dev/sdg devices are removed.
The output of gphoto2 is then:
# gphoto2 --list-config
/Camera Configuration/Picture Settings/resolution
/Camera Configuration/Picture Settings/shutter
/Camera Configuration/Picture Settings/aperture
/Camera Configuration/Picture Settings/color
/Camera Configuration/Picture Settings/flash
/Camera Configuration/Picture Settings/whitebalance
/Camera Configuration/Picture Settings/focus-mode
/Camera Configuration/Picture Settings/focus-pos
/Camera Configuration/Picture Settings/exp
/Camera Configuration/Picture Settings/exp-meter
/Camera Configuration/Picture Settings/zoom
/Camera Configuration/Picture Settings/dzoom
/Camera Configuration/Picture Settings/iso
/Camera Configuration/Camera Settings/date-time
/Camera Configuration/Camera Settings/lcd-mode
/Camera Configuration/Camera Settings/lcd-brightness
/Camera Configuration/Camera Settings/lcd-auto-shutoff
/Camera Configuration/Camera Settings/camera-power-save
/Camera Configuration/Camera Settings/host-power-save
/Camera Configuration/Camera Settings/timefmt
Some things I've tried already are sdparm and sg3_utils, however I am unfamiliar with them, so it's possible I just didn't find the right command.
# mount | grep sdg
# mount | grep sg7
# umount /dev/sg7
umount: /dev/sg7: not mounted
# umount /dev/sdg
umount: /dev/sdg: not mounted
# gphoto2 --list-config
*** Error ***
An error occurred in the io-library ('Could not lock the device'): Camera is already in use.
*** Error (-60: 'Could not lock the device') ***
I would like to download a few (591)images from the Galaxy S phone. Samsung have advised me that to do that I need to place the Galaxy S phone on Mass storage, whivch I can do and plug the phone USB cable to the PC and manually mount the USB. The Galaxy S firmware 2.1-update1 doesn't support automatic mounting! The Galaxy S has an Android platform Kernel version 2.6.29 with root @SE-S604 #2. I'm running Ubuntu 10.04 on a AMD Athlon(tm) XP 1700+ with 1G of ram. It's the manual mounting of the USB connection
View 1 Replies View RelatedWhen I connect a USB stick to my laptop, it is mounted as root:root. I want ot be able to use it as the logged in user
It has worked in the past (1+ month ago), but recently it just mount it as root:root.
My userid is 1000, so somewhere in the system it knows that the current user is relevant.
The directory created
The date is off System time is correct - so this could be an indication of what is wrong.
I have tried with my own custom compiled kernel and now I am using the latest 2.6.38 official image.
I am currently using opensuse 11.2 with kde 4.3.1. I am having a problem when I connect my samsung R450. It will not mount or show up as a usable device in either Dolphin, Amarok, or on the device notifier. I have tried manually mounting but I get an error saying it cannot find such device. I did not have any issues using it in 11.1 with KDE 4.2. It is being recognized by my system, but not allowing it to show up as a storage device or being mounted.
output of dmesg:
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output of lsusb:
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When I shut of the usb mass storage on the samsung R450 it switches to modem and is properly detected and usable as modem by my system.I don't have any other problems with other usb devices, such as a digital camera or flash drives, so I don't know if I just missing a system setting or configuring something wrong.
I just discovered that inserting any USB drive causes an immediate hang of the system. The keyboard caps lock and scroll lock lights blink. Only recourse is to power cycle the system. This is after installing Kubuntu 9.10 in January, I don't believe I had occasion to insert a USB drive until tonight. 100% reliable. No entries in logs, presumably because it hangs the kernel when it happens. The /var/log/kern.log file has been corrupted due to file system damage (1+ sectors of some other file inserted into chain) and probably other files as well.
I've not had occasion to report other bugs, but I've found no way to report anything other than application bugs. I tried using "ubuntu-bug kernel" which helpfully said there was no such application as 'kernel' and has been busy "collecting problem information" for the last half hour or more. Somehow I don't think its ever going to finish.
The crash only happens when booted into Kubuntu 9.10. If I boot off of 9.04 then USB drives work fine. Both USB drives I've tried reliably produce the crash. One is a random cheap USB thumb drive (imprinted "Cisco"), the other is a 16GB Corsair Voyager.
I have a problem with my Ubuntu which is when I plug my usb mass storage I get nothing as id i haven't plugged it. Nothing appears in the Computer , and when I do the command fdisk -l.. the usb mass storage isn't there to mount it and when i press lsusb
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Here is the dmesg
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My ubuntu is lucid 10.04, and my mother board is Gigabyte GM31.
steps to block usb mass storage devices in linux
View 2 Replies View RelatedI am so completely frustrated with this and can't seem to find any solid answers. I have a Google Nexus One phone. I want to also use it as a portable music player. I can find no player for Linux that can do ALL of the following:
- copy music
- transcode when necessary
- transfer cover art in appropriate format
- transfer playlists (music files AND .m3u playlist files)
Banshee is the closest, but it is so painfully slow, has many problems with tags and also doesn't transfer playlist files. Banshee advertises support "out of the box" for this device. I've tried overriding with an .is_audio_player file, but it is ignored. Rhythmbox will transfer song files and transcode as necessary, but no artwork, no playlists. Exaile doesn't recognize this device for some reason.
Since I use openbox with some packages from Xfce4 (mainly for convenience) I get most stuff "for free" as it were when using openbox, but I can't figure out how to mount android devices in a simple way. I can either do it manually, or install some other file manager that has this capability. This leads me to my question, I've noticed that if I install Nautilus, which automatically mounts android devices OotB, I get this functionality in Thunar as well. This leads me to believe that there is clearly a dependency package of some kind installed when running apt-get install nautilus that enables it, It'd be great to get this functionality in Thunar without having all the nautilus packages just littering about for no good reason. the required package is gvfs-backends, which I should have realized when I was unable to browse smb:// addresses. You forget a lot when you only make a fresh install once every 2 years or so.
View 0 Replies View RelatedI have a 1TB external HDD which I use to store my music library of roughly 40 gigs. Therefore I would normally import music directly from it to my Rhythmbox library while keeping everything stored on the removable drive. In recent versions of Rhythmbox this is no longer needed as the application integrates my external HDD into the side pane and lists the music automatically. This is great although when closing Rhythmbox and reopening it, the drive has to be scanned all over again. This is a huge pain when it has to scan through 40+ gigs of music.
Therefore I would like this feature disabled and removed from my side pane. It is not needed and causes quite a large annoyance. Either I want it removed or the ability to keep the index of music from the drive in Rhyrhmbox at all times. Achieving this would be fantastic and would switch me back to Rhythmbox. recently I have been using Exaile which I love but rhythmbox not working bugs me.
I am beginner in UBUNTO 10.04 LTS. I have a mobile broadband of Relience which use the device of Huawei EC 1262. I have a problem with this modem. when i installed required packages for this device like usbswitch, wvdial etc, my internet connect works fine but as i switch off the PC and restart, PC can not detect the modem, it detect as mass storage device. Is there any command/option that i switch the mass storage device into modem in the terminal window or on the GUI platform mean on the desktop screen.
View 2 Replies View RelatedIt doesn't show it on the device-notifier, or fdisk, and not sure if this will be any use to you. In windows it appears immediately as a MSD, doesn't show as a modem or anything first.
Code:
linux-gg0e:/home/Chris # tail -f /var/log/messages
Feb 14 10:20:09 linux-gg0e smartd[2752]: Device: /dev/sda [SAT], SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 51 to 50
Feb 14 10:20:09 linux-gg0e smartd[2752]: Device: /dev/sda [SAT], SMART Usage Attribute: 195
[Code]....
I need to enable my new E2120 samsung phone as a mass storage device. but I think I need a USB driver. Had a good look round the forums but can't seem to find any posts. Its quite a new phone but hopefully the solution is already about. When I plug it into the USB the phones screen has a hashed out 'mass storage' option.
View 1 Replies View RelatedI've been trying to figure out what Apache directive is causing this:
Code:
[Thu Nov 11 15:00:00 2010] [info] [client x.x.x.x] Request header read timeout
My apache version is:
Apache/2.2.14 (Ubuntu)
I have google searched for this error but cannot seem to find any matches or information.
what are the series of files that are called when a user make copy operation from usb mass storage to hard disk?i have reached the code of the usb mass storage in linux kernel 2.6.33 and i want the exact code the make the copy how can i do that?
View 2 Replies View Relatedi have a windows xp machine with filesharing enabled and the shares set up and ready to go i have a laptop on which i did a fresh install of fedora 15 with samba and all the necessary packages to make the fedora machine a samba client to the windows machine.
my problem is that when i go into nautilus and click on the network tab it shows nothing not one single computer...the fedora machine doesnt even show up.....i have done all the tests i can think of and confirmed that the smb service is running, the nmb service is running, samba is allowed thru the firewall and all the computers are in the same workgroup..yet neither one can see each other even more frustrating is when i go to mount a windows share thru the terminal it shows a successful mount (as i type in the command hit enter and recieve no errors) BUT when i go into the mount directory and open the new directory i made for the samba share it shows nothing there not even when i go into the windows machine and add a file to the shared folder...PLUS for some strange reason the /mnt directory already had two empty files called "home" and "boot" already in it i have no clue what thats about but ok, then on the windows side i go into "network places" and click on "show workgroup computers" and the windows machine will show up but not the fedora machine.
these are the commands i have used to install and get samba working- "yum install samba system-config-samba samba-client cifs-utils" "service smb start" anyway until i can figure this out i have decided to start from scratch and erase samba from the machine completely and i am hoping that maybe some one can read all this and come up with some ideas...maybe there is just something i forgot when i was setting this up yesterday its possible i just went to fast and skipped a step again all i want is the fedora 15 machine to just be a samba client with read/write priviledeges
here we have an older digicam (Jenoptik/Exakta Model "DC 22", if someone might want to know) that can be switched between some "PC Camera mode" and "Mass storage mode".Unfortunately, if attached to USB, it is always recognized as
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UDEV [1262910483.475886] add /class/video4linux/video0 (video4linux)
lsusb tells:
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What are the possible problem when Windows access the file from Ubuntu got Read Only even though have a full permission to read, write and execute the file? Ubuntu to Ubuntu accessing the file there is no problem only Windows got a problem.
View 1 Replies View RelatedI have been given a headless linux system running from a SD card. I get into it by putty, directly to root, not other user and even /home dir. Whatever I copy or write will dissapear because is ro.
my etc/fstab file is:
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda1 /boot vfatnoauto,rw 0 0
how to read and write i.e setting of hardware clock through c program on linux
View 5 Replies View Relatedif i have a dir with several mp3's files:
example:
[root@xxx]ls -l
-rwxr-xr-x 1 web2 client1 6222573 Nov 26 17:34 01 Artist1 - Song1.mp3
-rwxr-xr-x 1 web2 client1 4989384 Nov 26 17:34 02 Artist2 - Song2.mp3
-rwxr-xr-x 1 web2 client1 6987438 Nov 26 17:36 03 Artist3 - Song3.mp3
and i need to update the id3 tag of all files with the command:
/usr/bin/id3v2 -a "Artist1" -t "Song1" Artist1 - Song1.mp3
how i do a loop to read the filename and execute the id3v2 command for each file, as i have filenames with spaces and special chars ex:"".
I am trying to write a C++ Code to read write a XML file in C++.I researched a lot and find xerces is used for that but I am not able to write the code for that.Please provide me some links on how to run a code that R/W a xml file in C++.
View 1 Replies View RelatedSuch as the title
View 2 Replies View RelatedAll my important data like ebooks and some programs are in a ntfs partition...when i login to my redhat i am unable to access that partition..
How to access(r/w) that partition in linux(Red Hat)?