Cdrom issues after fresh installation of fc3 # 2.6.10-177

[abeurts]

I have recently done a fresh install of fc3 cleaning all previous data on my hard drive. All my /home directories have been backed up on a CD-RW as home-backup.tgz. For some reason when I try to extract the files onto
my empty home directory its telling me that I don't have permission. In the command line as su I have attempted chmod 777 home-backup.tgz with no success. I suspect the problem has to do with the fresh installation of fc3.
I'm a newby so would greatly appreciate your help as I have already reinstalled fc3 twice and updated all software with up2date and still have the same problem.

Below I have listed a portion of what shows under system log:

Quote

Mar 7 10:19:49 S010600087448bb2c kernel: ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdcMA, hddio
Mar 7 10:19:49 S010600087448bb2c kernel: hdc: MAT****A CD-RW UJDA360, ATAPI CD/DVD-ROM drive
Mar 7 10:19:49 S010600087448bb2c kernel: hdc: ATAPI 24X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
Mar 7 10:24:03 S010600087448bb2c fstab-sync[2991]: added mount point /media/cdrecorder for /dev/hdc
Mar 7 10:34:52 S010600087448bb2c kernel: SELinux: initialized (dev hdc, type iso9660), uses genfs_contexts
Mar 7 12:22:29 S010600087448bb2c kernel: SELinux: initialized (dev hdc, type iso9660), uses genfs_contexts
Mar 7 12:50:16 S010600087448bb2c kernel: hdc: media error (bad sector): status=0x51 { DriveReady SeekComplete Error }
Mar 7 12:50:16 S010600087448bb2c kernel: hdc: media error (bad sector): error=0x30
Mar 7 12:50:16 S010600087448bb2c kernel: end_request: I/O error, dev hdc, sector 746772
Mar 7 12:50:16 S010600087448bb2c kernel: Buffer I/O error on device hdc, logical block 186693
Mar 7 12:50:18 S010600087448bb2c kernel: hdc: media error (bad sector): status=0x51 { DriveReady SeekComplete Error }

Unquote

Thank you

[<(X)_HD_(X)>]

Check who is the owner og the tgz file with $ll *tgz
to change owner use chown shell command.

[abeurts]

Below please find the ownership details on the files I'm trying to extract. As you can see I also tried to change the ownership
with chown 777 with no success.
[root@S010600087448bb2c cdrecorder]# ls -l
total 578895
-r--r--r-- 1 root root 4144453 Feb 2 12:40 ect-backup.tgz
-r--r--r-- 1 root root 588643387 Feb 2 12:52 home-backup.tgz
[root@S010600087448bb2c cdrecorder]# chown 777 home-backup.tgz
chown: changing ownership of `home-backup.tgz': Read-only file system
[root@S010600087448bb2c cdrecorder]#

Alex

[tashirosgt]

What are the permissions on your home directory?

[jowah]

Originally Posted by abeurts

Below please find the ownership details on the files I'm trying to extract. As you can see I also tried to change the ownership
with chown 777 with no success.

[root@S010600087448bb2c cdrecorder]# ls -l
total 578895
-r--r--r--  1 root root   4144453 Feb  2 12:40 ect-backup.tgz
-r--r--r--  1 root root 588643387 Feb  2 12:52 home-backup.tgz
[root@S010600087448bb2c cdrecorder]# chown 777 home-backup.tgz
chown: changing ownership of `home-backup.tgz': Read-only file system
[root@S010600087448bb2c cdrecorder]#

Alex

What you're trying to do there is changing properties of a file that's sitting on a CD-ROM disc, hence the failure. As the error message tells you, the CD is a read-only file system. Not even root can do that

Now, this would work:

# cd /home
# tar xzf /media/cdrecorder/home-backup.tgz

I'm assuming that the home-backup was made while standing in /home, meaning that the contents of home-backup.tgz is something like

user1/...
user2/...
user3/...

If, on the other hand, you created it from the "/" level and the archive contains files like

home/user1/...
home/user2/...
home/user3/...

you'd have to do

# cd /
# tar xzf /media/cdrecorder/home-backup.tgz

Check the contents of the archive with

# tar tvzf /media/cdrecorder/home-backup.tgz|less

before unpacking it, just to be sure.

Now, seeing how you have SELinux enabled (good, but can be troublesome sometimes) you'd want to make sure the files you restore are re-labeled correctly. Do this by
1 - creating a file ".autorelabel" in the root of the filesystem you want relabeled (assuming /home here)
2 - reboot

# touch /home/.autorelabel
# reboot

If you only have one partition for your whole installation, you'd make the first step there "touch /.autorelabel" instead.

Bonus tip: see that long "[root@S010600087448bb2c cdrecorder]" prompt? You might want to disable IPv6 useage on the machine. See here.

[<(X)_HD_(X)>]

chown 777 home-backup.tgz

This is wrong . $chown you.you <file> thats how
you is your user name.
Yes he was right, copy the files from the cd first, then change the permissions.
do $man chown and $man chmod in your terminal, that will clear a few things for you.

[abeurts]

Hi Jowah,
Your explanation was very comprehensive and full of detailed information. Thank you very much.
Unfortunately I was not able to recover all archived data I got the following error message:

I followed you instrucciones and first listed all files archived with the following command:

# tar tvzf /media/cdrecorder/home-backup.tgz|less

then noticed that the home directory was under / so extracted with following command:

# cd /

# tar xzf /media/recorder/home-backup.tgz

Most directories were extracted except for my Mail directory and some other ones I can recall. THe error I got is the following:

Quote
gzip: stdin: Input/output error
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
Unquote

Because I archived my /Home directory entirely I have a lot of system files that I'm not interested in
extracting into my clean /home directory. I would just like to extract directory that contains for example
my emails, email addresses and files I have created with calc or writer ??
I looked on the internet to see if there is a way to just list the directories but could not find anything.

Thank you for your help.

[jowah]

Originally Posted by abeurts

Most directories were extracted except for my Mail directory and some other ones I can recall. THe error I got is the following:

gzip: stdin: Input/output error
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

Yep, this confirms what your first post reflected - the log says the CD was partially unreadable/damaged. Bad burn? Faulty media? Crappy CD-writer? All of the above? Who knows?

So what to do now? Well, if you have another computer nearby, perhaps one running Windows, you might be able to read the CD under that OS and then transfer the tar file to your Linux machine over the net. Or, if it's small enough, put it on a USB memory stick and do it that way.

Because I archived my /Home directory entirely I have a lot of system files that I'm not interested in extracting into my clean /home directory. I would just like to extract directory that contains for example my emails, email addresses and files I have created with calc or writer ?? I looked on the internet to see if there is a way to just list the directories but could not find anything.

Do you have enough free disk space? Check for free disk space by using df and add the "-h" parameter to have it report in Megabytes or Gigabytes.

# df -h

You might want to unpack the backup into a temporary folder, say into /tmp and then manually move things out of that an place them where you want them

# cd /tmp
# cp /media/cdrecorder/home-backup.tgz .
(now we wait and hope the CD-reader can read the whole file just fine)
# tar xzf home-backup.tgz
(Lots of stuff gets unpacked into /tmp/home/... )

After that, you'd have to manually copy over what you want to where you want it.

[abeurts]

Yes there is enough room on the system:
Quote
[alex@S010600087448bb2c ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
27G 4.0G 22G 16% /
/dev/hda1 99M 12M 82M 13% /boot
none 126M 0 126M 0% /dev/shm
Unquote

I will try sending sending the file over the net from a computer running WIndows.
Thank you very much