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How to backup the home directory on the Linux Workstation
On the Linux workstation in ST&ITC, you can create backup of the home directory to your CD-R/RW using the cdbackup command.
How to create backup of the home directory (cdbackup)
Use procedure
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log in to the Linux Workstation
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check the current load state of the machine using the w command
% w 13:36:16 up 26 days, 4:17, 6 users, load average: 0.04, 0.12, 0.09 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT ua000000 tty1 - 8:09am 0.00s 2.40s 0.01s w
There are 3 numbers on the top row labeled "load averages:". If these numbers are significantly higher (close to 1.0), there is a possibly that a high load process is running in the background. In this case, backup might fail.
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insert CD-R/RW to the drive
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execute the cdbackup command
※ You need to erase datas in advance, if you want to use CD-RW. ※ (「How to erase the data stored in the CD-RW」)。
% cdbackup
Normally, it takes few minutes to create backup.
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Finally, the time was needed to write datas is displayed.
backup.burn - based on cdrecord Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jöòg Schilling TOC Type: 1 = CD-ROM scsidev: '0,0,0' scsibus: 0 target: 0 lun: 0 Linux sg driver version: 3.1.24 Using libscg version 'schily-0.7' Driveropts: 'burnfree' atapi: 1 Device type : Removable CD-ROM Version : 0 Response Format: 2 Capabilities : Vendor_info : 'TSSTcorp' Identifikation : 'CDW/DVD TS-H492B' Revision : 'IB00' Device seems to be: Generic mmc2 DVD-ROM. Using generic SCSI-3/mmc CD-R driver (mmc_cdr). Driver flags : MMC-3 SWABAUDIO BURNFREE Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R Drive buf size : 1957120 = 1911 KB FIFO size : 4194304 = 4096 KB Track 01: data unknown length Total size: 0 MB (00:00.00) = 0 sectors Lout start: 0 MB (00:02/00) = 0 sectors Current Secsize: 2048 ATIP info from disk: Indicated writing power: 2 Reference speed: 6 Is not unrestricted Is erasable Disk sub type: High speed Rewritable (CAV) media (1) ATIP start of lead in: -11077 (97:34/23) ATIP start of lead out: 336075 (74:43/00) 1T speed low: 4 1T speed high: 10 2T speed low: 2 2T speed high: 10 power mult factor: 2 6 recommended erase/write power: 5 A1 values: 24 2C DC A2 values: 14 A4 4A Disk type: Phase change Manuf. index: 11 Manufacturer: Mitsubishi Chemical Corporation Starting to write CD/DVD at speed 4 in real TAO mode for single session. Last chance to quit, starting real write 0 seconds. Operation starts. Waiting for reader process to fill input buffer ... input buffer ready. BURN-Free is OFF. Turning BURN-Free on Performing OPC... Starting new track at sector: 0 Track 01: 5 MB written (fifo 100%) [buf 100%] 4.2x. 36.71% done, estimate finish Thu Jul 6 18:51:42 2006 Track 01: 15 MB written (fifo 100%) [buf 100%] 4.2x. 73.44% done, estimate finish Thu Jul 6 18:51:36 2006 Track 01: 22 MB written (fifo 100%) [buf 100%] 4.0x.Total translation table size: 0 Total rockridge attributes bytes: 159516 Total directory bytes: 356352 Path table size(bytes): 932 Max brk space used f5000 13632 extents written (26 Mb) Track 01: 26 MB written (fifo 100%) [buf 100%] 4.0x. Track 01: Total bytes read/written: 27918336/27918336 (13632 sectors). Writing time: 52.830s Min drive buffer fill was 100% Fixating... Fixating time: 75.700s BURN-Free was never needed. backup.burn: fifo had 441 puts and 441 gets. backup.burn: fifo was 0 times empty and 348 times full, min fill was 73%.
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mount the CD-R/RW media using the mount command and check the contents, such as the ls command
% mount /mnt/cdrom % cd /mnt/cdrom % ls
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When the check is finished, unmount using umount command. (If the current directory is under /mnt/cdrom, you can not umount.)
% cd % umount /mnt/cdrom
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eject the disk using the eject command (you must umount in advance) .
% eject
Reference: about countdown
If you type Ctrl and c while displaying the messeage below and counting down 10 seconds. you can stop cdbackup safety. In this case, nothing is written to the CD-R/RW. If you stop cdbackup after this timing, the data in the media might be broken.
Starting to write CD/DVD at speed 4 in real TAO mode for single session. Last chance to quit, starting real write 9 seconds.
How to erase the data in the CD-RW
You need to erase the data in the CD-RW in advance, if you want to create backup to the CD-RW using the cdbackup command. In the ST&ITC Linux environment, you can use cdrw.clean command to erase the data in the CD-RW.
Use procedure
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set the CD-RW to the drive
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execute cdrw.clean command
% cdrw.clean
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answer y at the following question (If you answer n, the program ends) .
Remove all data on CD-RW... OK? (y/n) y
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the following messeage will be displayed the same as cdbackup
backup.burn - based on cdrecord Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 J\x86r\x86qg Schilling scsidev: '0,0,0' scsibus: 0 target: 0 lun: 0 Linux sg driver version: 3.1.24 Using libscg version 'schily-0.7' Device type : Removable CD-ROM Version : 0 Response Format: 2 Capabilities : Vendor_info : 'TSSTcorp' Identifikation : 'CDW/DVD TS-H492B' Revision : 'IB00' Device seems to be: Generic mmc2 DVD-ROM. Using generic SCSI-3/mmc CD-R driver (mmc_cdr). Driver flags : MMC-3 SWABAUDIO BURNFREE Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R Starting to write CD/DVD at speed 10 in real BLANK mode for single session. Last chance to quit, starting real write 0 seconds. Operation starts.
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When the following messeage is displayed, the countdown starts. If you executed the cdrw.clean by mistake, then type Ctrl and c and cancel the command before the this number turns 0.
Starting to write CD/DVD at speed 10 in real BLANK mode \ for single session. Last chance to quit, starting real write 9 seconds.
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When the following messeage will be displayed, erasing the data starts. Normally, this takes few minutes.
Operation starts.
Caution
About CD-R/RW
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If you wrote the data to the CD-R/RW using cdbackup, you can not rewrite to the media.
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You need to clear the contents of the media before executing the cdbackup command, if the data has already been recorded on the CD-RW.
about the cdbackup command
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The cdbackup command backup to the CD-R/RW each user's home directory automatically. It is not possible to take a backup of any other directory.
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During the writing, the lamp of the CD-RW drive is blinking. You can not execute anything on the machine before the writing ends.
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After the end of the backup, please be sure to confirm whether it is successful.
Last-Modified: September 22, 2014
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