- Roundtable - muug.ca

FreeBSD ZFS vs. OpenSolaris ZFS?
by Kevin McGregor 02 Mar '08

02 Mar '08

I see that the latest FreeBSD release, 7.0, is supposed to support Sun's ZFS file system. I was wondering if you were to (for example) install FreeBSD on disk A using FreeBSD's 'normal' file system (UFS? UFS2? FFS? I haven't been following BSD file systems), and then set up disks B and C as a mirrored ZFS pool, could you later install OpenSolaris on disk A (replacing FreeBSD) and have it read the existing ZFS stuff on disks B and C? Or install OpenSolaris first, then FreeBSD later? As a bonus question, would anyone care to comment as to whether FreeBSD 7.0 or OpenSolaris (any version) are stable/reliable enough for a (home) production file server, specifically with respect to the ZFS support?

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Running a mail server in Shaw-land
by Sean Walberg 01 Mar '08

01 Mar '08

For anyone running a mail server that has to use shawmail.wp.shawcable.netas the smarthost, it has a limit of 1,000 messages/day before it cuts you off for 24 hours. I suspect it might be closer to 2,500 [0], but the CSR at Shaw told me 1,000. Normally you wouldn't run into this, but as it turns out all the email coming in to my server gets relayed to gmail, including the spam. You can see if you're under the ban: # telnet shawmail.wp.shawcable.net 25 Trying 64.59.128.135... Connected to shawmail.wp.shawcable.net (64.59.128.135). Escape character is '^]'. 4.5.9|Spam limit has been reached. Connection closed by foreign host. Sean 0. I had 2,700 some messages in my queue yesterday when under the penalty and only ~100 this morning after it was lifted (and subsequently put back in place after flushing the ~2600 messages) -- Sean Walberg <sean(a)ertw.com> http://ertw.com/

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[Fwd: Re: [RndTbl] FreeBSD ZFS vs. OpenSolaris ZFS?]
by sean＠tinfoilhat.ca 01 Mar '08

01 Mar '08

> I see that the latest FreeBSD release, 7.0, is supposed to support Sun's > ZFS file system. I was wondering if you were to (for example) install > FreeBSD on disk A using FreeBSD's 'normal' file system (UFS? UFS2? FFS? > I haven't been following BSD file systems), and then set up disks B and > C as a mirrored ZFS pool, could you later install OpenSolaris on disk A > (replacing FreeBSD) and have it read the existing ZFS stuff on disks B > and C? Or install OpenSolaris first, then FreeBSD later? > Yes. Both implementations of ZFS are cut from the same cloth so they should be interoperable. ZFS is both a file system AND a volume manager so you won't have to worry about UFS on top of it and what not. > As a bonus question, would anyone care to comment as to whether FreeBSD > 7.0 or OpenSolaris (any version) are stable/reliable enough for a (home) > production file server, specifically with respect to the ZFS support? > _______________________________________________ > Roundtable mailing list > Roundtable(a)muug.mb.ca > http://www.muug.mb.ca/mailman/listinfo/roundtable > The man page (http://www.freebsd.org/cgi/man.cgi?query=zfs&sektion=8&manpath=FreeBSD+7.0-…) was directly imported from OpenSolaris which says something in and of itself. I have heard of some success using it but I would wait a release or two before I would consider it production stable. If by production you mean home use and you backup your data regularly then in that case I would say 'have at it.' I would say it would be a cold day in hell before I would even be allowed to consider running it on one of the X4500's (I dream for that day). -- Sean

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Follow up to video card question
by Mike Pfaiffer 22 Feb '08

22 Feb '08

After consulting with a few people I settled on a GeForce 5200. Not the latest and greatest. However it gets the job done. The down side is I lose my second monitor connection. At least I still have s-video out and the driver will let me operate each separately. Later Mike

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Shaw Shaping
by Kevin Scott 20 Feb '08

20 Feb '08

>From what I have been told and my understanding, Shaw only traffic shapes the upload traffic, their Enhanced Quality of Service is supposed to remove your modem from being shaped, On their website, they say its mainly for VoIP services, but that's what it does. I haven't been able to test and confirm this tho. Kevin

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Recommendations for a video card
by Mike Pfaiffer 20 Feb '08

20 Feb '08

Long story short. It looks like ATI is no longer supporting their Radeon 7000 series under Linux. Recent updates result in the boot process freezing while going into X. I'm able to operate in text mode but get an error 104 (no valid modes) when I to start it manually. After trying various things like restoring a previously functional xorg.conf and searching Google for an entire afternoon for a solution, it looks like my only option (assuming I want to stay current) is a new video card. Does anybody have a recommendation for something around the $50.00 range? IOW, what have people had success with in the past? I'd like an AGP card with TV out (yes I do the occasional video editing). From this months meeting I gather sticking with ATI is not advised in the short term. Itech suggests a GeForce5200 (AGP) card mainly for price. Later Mike

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Strange Shaw traffic. Shaping?
by John Lange 20 Feb '08

20 Feb '08

Just recently I noticed that when I try and upload a file from my Shaw home Xtreme account via SSH (scp), the transfer starts out quickly reaching nearly 1Mb, then my entire Shaw connection clamps right down and my ping times shoot through the roof (800ms). In fact, not only does the upload slow to a crawl but the entire connection becomes unusable for anything. I don't do a lot of uploading but I don't recall this ever happening before. Is anyone else seeing this? Has Shaw started some heavy duty traffic shaping? John

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chrooted sftp sessions using rssh
by Montana Quiring 18 Feb '08

18 Feb '08

Hello, I've been banging my head against the wall for a while now. My head is sore. Please help! :) =========== What happens: =========== See log below of sftp session. Essentially what happens is when I try to sftp into the server it asks for the password then I get a "Connection closed" message. What I've done: =========== 1. verified home directory, and changed default shell to be rssh in: /etc/passwd 2. when I run: #ldd /var/rssh/libexec/rssh_chroot_helper I get... linux-gate.so.1 => (0x00dfd000) libc.so.6 => /lib/libc.so.6 (0x0054c000) /lib/ld-linux.so.2 (0x0052e000) I've copied all of /lib into the users /home/testuser/lib directory (just to make sure) and it had all but the first file listed above. I read that I don't have to worry about the linux-gate.so.1 file, is that true? 3. made a null file: #mknod -m 666 /home/testuser/dev/null c 1 3 4. copied over the usr, var directories from what was supposed to be a working chrooted directory =============== Here are some Files: =============== /var/rssh/etc/rssh.conf -------------------------- logfacility = LOG_USER allowsftp umask = 022 user=testuser:011:00010:"/home/testuser" /etc/ssh/ssh_config ---------------------- Host * GSSAPIAuthentication yes ForwardX11Trusted yes /etc/ssh/sshd_config ---------------------- Protocol 2 SyslogFacility AUTHPRIV PermitRootLogin no AllowUsers testuser PasswordAuthentication yes ChallengeResponseAuthentication no GSSAPIAuthentication yes GSSAPICleanupCredentials yes UsePAM yes X11Forwarding yes Subsystem sftp /usr/libexec/openssh/sftp-server =============== Here are some Logs =============== See below for the sftp session and some log results... *********START**************** quiringm@montanaqL-67769:~$ sftp -v testuser(a)company.com Connecting to company.com... OpenSSH_4.6p1 Debian-5ubuntu0.1, OpenSSL 0.9.8e 23 Feb 2007 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to company.com [206.45.100.100] port 22. debug1: Connection established. debug1: identity file /home/quiringm/.ssh/id_rsa type -1 debug1: identity file /home/quiringm/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.0 debug1: match: OpenSSH_4.0 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_4.6p1 Debian-5ubuntu0.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'company.com' is known and matches the RSA host key. debug1: Found key in /home/quiringm/.ssh/known_hosts:3 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information No credentials cache found debug1: Unspecified GSS failure. Minor code may provide more information No credentials cache found debug1: Unspecified GSS failure. Minor code may provide more information debug1: Next authentication method: publickey debug1: Trying private key: /home/quiringm/.ssh/id_rsa debug1: Trying private key: /home/quiringm/.ssh/id_dsa debug1: Next authentication method: password testuser(a)company.com's password: debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_CA.UTF-8 debug1: Sending subsystem: sftp debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.4 seconds debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0 debug1: Exit status 1 Connection closed ************END****************** Here's is the tail from /var/log/secure: **********START********************** Feb 6 11:41:44 company sshd[28011]: Accepted password for testuser from ::ffff:192.168.1.254 port 58539 ssh2 Feb 6 11:41:44 company sshd[28015]: subsystem request for sftp *********END****************** Here's the tail from /var/log/messages **********START************* Feb 6 11:41:44 company sshd(pam_unix)[28015]: session opened for user testuser by (uid=0) Feb 6 11:41:44 company rssh[28016]: setting log facility to LOG_USER Feb 6 11:41:44 company rssh[28016]: allowing sftp to all users Feb 6 11:41:44 company rssh[28016]: setting umask to 022 Feb 6 11:41:44 company rssh[28016]: line 73: configuring user testuser Feb 6 11:41:44 company rssh[28016]: setting testuser's umask to 011 Feb 6 11:41:44 company rssh[28016]: allowing sftp to user testuser Feb 6 11:41:44 company rssh[28016]: chrooting testuser to /home/testuser Feb 6 11:41:44 company rssh[28016]: chroot cmd line: /var/rssh/libexec/rssh_chroot_helper 2 "/usr/libexec/openssh/sftp-server" Feb 6 11:41:44 company sshd(pam_unix)[28015]: session closed for user testuser *************END***************** here's the tail from /var/log/audit/audit.log **START*********** type=USER msg=audit(1202320405.636:5044225): user pid=28189 uid=0 auid=4294967295 msg='PAM authentication: user=testuser exe=/usr/sbin/sshd (hostname=192.168.1.254, addr=192.168.1.254, terminal=ssh result=Success)' type=USER msg=audit(1202320405.942:5044280): user pid=28189 uid=0 auid=4294967295 msg='PAM accounting: user=testuser exe=/usr/sbin/sshd (hostname=192.168.1.254, addr=192.168.1.254, terminal=ssh result=Success)' type=USER msg=audit(1202320406.251:5044474): user pid=28191 uid=0 auid=4294967295 msg='PAM session open: user=testuser exe=/usr/sbin/sshd (hostname=192.168.1.254, addr=192.168.1.254, terminal=ssh result=Success)' ***********END**************

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linux everywhere
by Glen Ditchfield 18 Feb '08

18 Feb '08

I was reading the manual for my mother-in-law's new TV set, an LG 32LC7D, and there at the back is an Open Software notice. It's running a Linux 2.6.12 kernel, with Busybox. It has an RS232C "service" port on the back, too. No, I'm not going there. In the good old days, when you turned on your TV, you had to wait for the tubes to warm up. Now you have to wait for the blasted thing to boot.

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Airport
by Kevin Scott 18 Feb '08

18 Feb '08

I have a LAN which uses static private IP addresses. The machines are connected to one another by a hub. The gateway machine is a Linux box running iptables . This has worked well with one recent exception which is likely a failed NIC, and it provides a means of examining traffic. I just purchased a Mac and want to add it to the network. It is in a place where there are no cables at present. I should have purchased a wireless adapter for the gateway machine, but instead I purchased the Airport Extreme Base Station. In hindsight, I don't really need a router - but is there a way to use it to simply get my Mac onto the network? In setup, the airport base station insisted on having something plugged into the WAN port, so I eliminated the hub, plugged the gateway machine's LAN side ethernet into the WAN port of the airport, and plugged the other wired LAN machines into LAN ports. All the wired machines are able to browse the internet (though I'm guessing everything is NATd twice - once in the router and again in the gateway machine). I have not been able to get internet access through the wireless on my Mac. Is there a simple way to use this device as a simple wired and wireless 'switch' on my LAN? or should I simply throw in the towel and let the base station be a router and firewall, and do away with a gateway computer? -- -Dan Dr. Dan Martin, MD, CCFP, BSc, BCSc (Hon), MSc GP Hospital Practitioner Computer Scientist ummar143(a)shaw.ca (204) 831-1746 answering machine always on log into the airport, turn off DHCP, plug your existing network into one of the LAN ports, and you've turned the router into an access point and switch. WAN port on the router shouldn't' be used at all in this case. You also get around the double-natted issue. Good luck, Kevin

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