Discuss August 2007

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284 participants
392 discussions

Help with backups
by Scott Ehrlich 23 Aug '07

23 Aug '07

I've got a Redhat 5 server running Samba, and two dualboot CentOS 5 workstations. Until we get a better backup strategy, I'm backing up the workstations to the server via mounting a shared samba drive to /mnt. Trying tar cvf /mnt/samba_share/backup.tar /* eventually yields backing up /mnt, which produces an unwanted loop, including /mnt/samba_share I looked at tar with --exclude /mnt but didn't seem to get the results I wanted. I tried dump, which looked like it was working, but I have no idea what files it was backing up, and couldn't find an option in the man page to have it show me the files. I would have let it go, but since I couldn't be sure about /mnt recusion, I opted out of it. I ended up, for now, tarring each top-level directory to its own tar file, except, of course, for /mnt. What do people suggest? Thanks. Scott

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Re: [CentOS] BIND issues, server not responding
by Ray Leventhal 23 Aug '07

23 Aug '07

<snip> > > not certain if you intend it to be, but your 64.135.16.15 machine is > not reachable from "outside". an attempt to telnet to port 53 (or 25) > gets me "no route to host" and a traceroute ends with: > > 8 ge2-0.cr1.bct.fl.host.net (64.135.1.9) 34.779ms 35.102ms 35.413ms > 9 ge6-1.er8.bct.fl.host.net (64.135.1.58) 34.934ms 34.219ms 35.044ms > 10 sunspot.swhi.net (64.135.16.15) 34.653 ms !<10> 34.619 ms !<10> > > 35.739 ms !<10> > > so, from the outside, it appears that you have a firewall block (or > network configuration problem). > > my read is that the block is at the machine, not an edge router, so > this may be the source of your problem. > > try doing a telnet to port 53 on 64.135.16.15 (based on past messages i > think that that's the correct ipnumber) from some local machine and see > what you get. if it's listening you should get a connect message (even > if there are access restrictions in named.conf). if you get something > else, that should give a hint on where to look. > > > - Rick > > Hi Rick, Telnetting on port 53 from a machine in the same /24 gives this: [ray@wh1 ray]$ telnet 64.135.16.15 53 Trying 64.135.16.15... telnet: connect to address 64.135.16.15: No route to host Thanks for your input. I welcome any suggestions. Kind regards, ~Ray

1 0

Logical volume several boxes
by Sokol 23 Aug '07

23 Aug '07

Hi list, just for my appreciation: can I plug two harddisks already setting up with lvm into several boxes without losing my logical volume? Cheers, Kamill

3 3

SATA vs. SAS
by Rajeev R Veedu 23 Aug '07

23 Aug '07

I have 8 WD SATA HDD with raid ready (3mbps) hard disks on a 8 port 3ware controller.(on raid 5.) Does anyone have a comparison on SATA raid and SAS raid disk. As you know SAS disk are very expensive and I would like to know from experts in the list who could suggest which of the following would be the best. Option 1) 2 servers each having 2.0TB raid disk with SAS drives, 2GB ram and standard other features. Option 2) 4 No servers with 1TB each with 2GB ram and standard other features. If Data files (mostly AutoCAD Drawings of size 5MB to 50MB) are distributed as per the above options do you think which could perform better?. As you know the price of SATA disk is much cheaper than the SAS disk and we could nearly by 4 servers for that money. Probability work disturbed by a server crash is low in the second case but I am not sure about the comparison on performance. I would appreciate if you could spread some thought in this regards, and apologize if this is out of topic. Best regards, Rajeev

5 8

New server is not discovering USB drive attachment
by Robert Moskowitz 23 Aug '07

23 Aug '07

Just built a Centos 5 system last night that will be a NAS server. I have a bunch of notebook drives with information I want to populate the NAS with. I am logged in as root. I plug in the USB notebook drive device and nothing. My notebook has no trouble with this device. Obliviously I missed something in the install. autofs is reported as running, so not that.

2 3

10+ TB RAID experiences?
by Scott Ehrlich 23 Aug '07

23 Aug '07

I'm looking for RAID options for at least 10 TB to attach to a Dell PowerEdge 2950 running RHEL 5 64-bit Server. The system will act as a single sign-on server for XP and Linux, thus storing user's data from mounted home directories exported from the server to various workstations. It may also house a database. I'll need a storage solution starting at least 10 TB. Most of the SAS devices I've seen go up to 2 TB. Looking at the IBM System Storage devices, for example, they offer 12 TB and up. I'm not sure of the budget, so I'll discount cost for now. How good are IBM's rack RAID devices? I'm just looking at their System Storage DS4xxx line. How about EMC? Network Appliance? Clariion? Quality of unit, reliability of unit andservice and support, overall cost of ownership? Expandability? Thanks for any and all insights. Scott

6 7

8 port serial card
by Feizhou 23 Aug '07

23 Aug '07

Hello, Has anybody got Centos to work with multi-port serial cards? Or does anybody have multi-port serial or fax cards to recommend? Thanks.

2 5

How do I know if I am using SAN?
by Mag Gam 23 Aug '07

23 Aug '07

How can I verify if I am using SAN for my Linux Server? Also, how do I find WWNs of HBAs? TIA

3 3

Right click on desktop
by Jerry Geis 22 Aug '07

22 Aug '07

How do I customize what I see when I right click on the desktop? jerry

2 1

quick FTP server with default vsftpd installation
by Simon Jolle 22 Aug '07

22 Aug '07

Hi list I just installed vsftpd and started it (CentOS 5). Then put some files in /var/ftp/pub (for testing purposes with rights 777) and try to connect with local user to download those files. $ lftp test@localhost Password: lftp test@localhost:~> ls ls: Login failed: 500 OOPS: cannot change directory:/home/test lftp test@localhost:~> pwd ftp://test@localhost How to enable quick and dirty FTP transfer? cheers Simon -- XMPP: sjolle(a)swissjabber.org

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Discuss August 2007