General :: Rebuild System From Dump Tape?
Feb 8, 2010
I have a Red Hat Enterprise (AS) 4.8 system and I need to know how to totally rebuild the system from dump tape. I have been making some full level 0 dumps of the system to the attached DAT72 tape drive... In the case the boot disk goes south, I need to reload from tape, onto a new disk drive. I know how to do this in Solaris. I assume you boot from CD to like a mini-root, then configure and mount the drive on temp mount points, restore the sys data, then load the "boot blocks" (like installboot on solaris).
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Jan 12, 2011
I have installed, LTO-5 in rhel 5.
now i have taken a backup using command.
dump 0uf /dev/nst0 /dir
now i want to see contents of tape.
the command tar tvf /dev/nst0 is showing error
is there any other command to see dump backup contents
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Feb 10, 2011
I need help writing a script that will copy everything from tape to system directory. I have a Linux box with 3 TB of Hardware space. I am using the following commands
1) mt /dev/st0 rewind
2) tar xvf /dev/st0
3) tar xvf /dev/st0 fsf 1 (Using this to move to the next segment of the tape) and then
4) tar -xvf/dev/st0
I keep repeating steps 3 and 4.
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May 22, 2010
Does the dump command back up entire file-systems or is it capable of backing up subsets of a file-system? And is tar capable of taking device names (for file systems) as input to be archived?
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Apr 3, 2016
I have been using an LTO-5 Ultrium-3000 tape drive connected to an ATTO HBA without problem. I can control the tape drive using "mt -f /dev/nst0" and have been able to make successful backups using cpio, tar, and dump/restore. I followed some instructions on the web about how to install the HPE Library and Tape Tools application (version 4.21) which relies on conversion of a rpm to a deb file. The software seems to have been installed correctly and runs. However the hardware scan function does not recognize my tape drive. The following is suggested in the user manual if the tape device is not recognized by the software under Linux:
1. Login as root.
2. Edit the following file:
vi /etc/modules.conf
3. Add the following line as appropriate:
add options scsi_mod max_scsi_luns=128
4. Reboot the computer.
The problem is I don't have an /etc/modules.conf and am not sure exactly which file would be equivalent? If this is even the correct solution.
My tape drive is controllable and functions well using "mt -f /dev/nst0 status" so it seems to be a matter of LT&T software to detect the tape drive.
At the risk of providing too much info here some, possibly relevant, output from lshw
*-pci:3
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: b5
[Code] .....
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Apr 26, 2010
I want to know how to retrival partial files from a lto 4 tape instead of retrieving the complete tape.
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Mar 8, 2010
I am looking at getting a DLT drive for my network; however, I have never used the tar command with a tape drive. What happens if the data is larger then 1 tape? Does the tar application automatically span tapes or do I need to use switches so it spans multipule tapes? Right now my Full backup will take 2 or 3 tapes.
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Dec 8, 2008
I have dell poweredge 830 server with tape drive and RHEL 4 running on it....the issue i am facing is,i am unable to insert the tape as i had ejected the tape forcefully from it....
i tried to do a listing of the contents backedup on tape and it got struck in middle throwing below error,
/dev/st0:device input/output error. after which i was unable to eject the tape using
mt -f /dev/st0 rewoffl
i removed the tape by holding the eject button and now when i try to insert another tape, it's unable to take the tape in to tape drive...
I've tried doing all except reeboting the server, can any one help me out in this issue, hope the blow information may help in debugging the issue... code....
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Nov 21, 2010
When trying to rebuild a RAID1 on a FastTrak TX4310 controller after a disk was replaced the below message is given:
Code:
[root@SAMBA Samba]# dmraid -R pdc_gigcjhdfa /dev/sdc
Volume "pdc_gigcjhdfa" is not in rebuild state (current: 16)
Rebuild: cannot rebuild from current state!
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Jul 17, 2009
i've got a non-typical problem here. i've got kvm-ed freebsd (its not so important here) stored on a block device - /dev/sdb8. i wanted to install fedora rawhide there but first i thought it's a good idea to do some backup. so here we go dd if=/dev/sdb8 of=freebsd.img bs=4k
theoretically, dd should do the thing without saying a word, but it doesn't. every time it stops after reaching 16GB filesize (partition is about 35GB) and completely locks the system (only reset helps).the dump worked only once, but when i tried to compress this big image 7z got stucked too and the system froze . the problem occurs when copying to the same drive or to different drive. i've got a partial kerneloops logs, but so far i haven't found the answer.
Code:
Kernel failure message 1:
BUG: Bad page state in process bash pfn:14a224
page:ffffe200048377e0 flags:0040000000000000 count:0 mapcount:0 mapping:0000000000000002 index:2a4b (Tainted: P )
Pid: 9711, comm: bash Tainted: P 2.6.29.5-191.fc11.x86_64 #1
Call Trace:
[<ffffffff810a2be0>] bad_page+0x11d/0x130
[Code]....
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Aug 30, 2010
how to rebuild the system update database?
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Sep 30, 2010
I have a questions concerning tape drives.
Is it necessary to erase tape before recording ?
Do You know linux command to clean tape drive ?
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Dec 11, 2010
Can someone point out such a program?
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Sep 6, 2010
I have used Dump Command to dump the application files. For Full backup the level 0 is working fine. For incremental backup I used the level 1 or 2 it is getting the error as
DUMP: Only level 0 dumps are allowed on a subdirectory
DUMP: The ENTIRE dump is aborted.
The code I used
===============================
#!/bin/bash
#Full Day Backup Script
#application folders backup
#test is the username
now=$(date +"%d-%m-%Y")
[Code]...
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Mar 24, 2011
After restoring from a hardware failure, I cannot get bridging to work again. I reinstalled the host version 5.5, and copied the .img file back onto the rebuilt machine. I also had the network scripts and iptables backed up. Through virt-manager I re-attached the virtual machine, and when I boot it, I get a MAC address conflict on the vm's eth0; "Device eth0 has a different MAC address than expected". The vm had a static ip address.
[root@trngvh ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
HWADDR=00:24:81:E4:FC:02
[code]....
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Oct 7, 2009
I want to generate core dump files from my program when it crashes. Its a pretty big process and has about 10-11 threads in it.I have followed the documentation to enable core dump by setting ulimit to unlimited etc. I quickly tried "A demo program creating a core dump" from the following webpage, which succeeds in Segfault and dumping a core file in the directory that I configured.However, I tried running my original program and caused it to crash. I did this by making calls to kill(), raise() or the same null pointer access as shown in the webpage above. In each case, my program crashed but did not generate a core dump file. Am I missing something?My program is in C++ and my environment is Redhat 9.0 (kernel 2.4.20)
Going through the "Why do I NOT get a core dump?" section on the same webpage as above, I can see two potential problems. One - there are issues with the suid/sgid (bullet # 6). I am not able to change any settings with suid because my system does not contain either /proc/sys/fs/suid_dumpable or /proc/sys/kernel/suid_dumpableTwo, my program has threads in it and the bullet # 8 is the problem.
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Oct 7, 2010
I'm working on a script. fter it has installed and removed packages, I need to configure a ton of settings. In GNOME, I understand that those settings are kept in "/home/user/.gconf". Can I create a virtual machine and configure the system through the GUI to my liking and then dump all of the settings, so that I can load them on another machine? Is it as simple as copying the directories?
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Apr 29, 2010
I have backtrack 4 on vmware player... i have intel (R) wifi 5100 agn wireless card and when i type airmon-ng there is nothing shown on interface....it's empty... i downloaded a driver from here [URL] and i have been told i need kernel rebuild... i have kernel 2.6.30.9 so how can rebuild it?
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Jan 18, 2011
Recently I tried to get BGP table dumps from public route servers. I telnetted into one of those public route servers and ran "show ip bgp" command. My question is: how to save the command output to my local machine? I cannot run "show ip bgp > tmp.txt" on the remote route server.
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Oct 14, 2010
on a Linux pc I want to restore the contents of the DLT tape to /mnt directory,how to do itIf I just want to see the contents of the files, is it possible to read the contents irectly from tape without restoring to hard disk?
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Oct 12, 2010
I am trying to install some patches and drivers needed for a wifi card, but im getting an error that says: "build your kernel with CONFIG_LIBIPW=m." How can I recompile the kernel to add that? And can I do it without having to download a new kernel package? (i mean recompiling the existing kernels)
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Mar 11, 2010
Iam trying to alter a bootable Debian install CD based on the instructions [URL] this is the command to rebuild the iso image as specified at the above link.
Code:
$ mkisofs -o debian-503-amd64-CD-1-preseed.iso
-r -J -no-emul-boot -boot-load-size 4
-b isolinux/isolinux.bin
-c isolinux/boot.cat ./debian-503 2> /dev/null
I've read the man pages for all the options specified and made sure that all paths are relative. However, the output iso file is not being generated.
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May 3, 2010
You would think it would be easy to do this (and essential to maximizing and predicting the usage of tapes), but apparently this isn't so. The program MT(1) actually had some commands that give the block positition (if supported by the drive) from which the remaining space could be deduced (even if you couldn't predict exactly how much space the next archive would take up). However I'm using MT(1L) which no longer has such commands.
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Mar 15, 2010
I am geting this problem since lat one year. please send me quikly the solution or the remedy of it.
Tape command:
Giving error like below archback is a shell script for the above same command for backup.
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Jul 27, 2011
In my program, I fork() to get a child process. Because of some problem, child process terminates by a segmentation fault. Parent process is still running. I have compiled my code with -g option. I have done: ulimit -c unlimited. I am not getting core dump of the child process. How can I get the core dump of child process?
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Oct 21, 2009
How to create a dump of an existing file and how to restore it with command line?
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Dec 10, 2010
how to collect the memory Dump In Linux?
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Mar 27, 2011
I would like to have dump backup just my home directory but am having problems the command I am using wants to back every thing and takes hours upon hours it has been running for about 10 hr and only 21% is done. This is the command dump -0u -f dp_hd /media/CENTON USB/ /how can I get this to back up only my home directory
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Dec 14, 2010
Not sure whether is feasible or not...
Any idea how to script to detect whether are there any tape media loaded in the tape drive ?
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Mar 2, 2010
I have been trying to install HP Storageworks DAT72 on CentOS 5 in vain. On system reboot, neither /dev/st not /dev/sg is available.
lsmod
Module Size Used by
ipv6 267617 40
xfrm_nalgo 13381 1 ipv6
[code]....
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