Discuss November 2007

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256 participants
327 discussions

Linux PDA/smartphone sync?
by Ugo Bellavance 15 Nov '07

15 Nov '07

Hi, I think I'll finally be able to move away from windows... I just installed linux and I'm wondering what people use as smartphones/PDA. I currently use a motorola V710 phone, which allows me to sync my contacts and calendar, which is all I need. I may change it soon, so I'd like to know what is best to work with linux (I use evolution right now, connected to an exchange (eventually scalix) server). I'm trying to get moto4linux to work, but I'm not even sure if I'll be able to sync my calendar + contacts with this. Any advice? Regards, -- Ugo Bellavance

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rsync problem
by Scott Moseman 14 Nov '07

14 Nov '07

I have a simple script that sends one file to two locations on the same destination server. Here's the code: DEST="remotehost" SRC="/home/boss/application.conf" DST1="/home/user1/application.conf" DST2="/home/user2/application.conf" RSYNC1=`rsync -caW -e ssh $SRC $DEST:$DST1` RSYNC2=`rsync -caW -e ssh $SRC $DEST:$DST2` This runs every 5 minutes. What I'm seeing is the first location occasionally gets a *partial* file, but the second location never has a problem. There does not appear to be any obvious correlation to why this would be happening. I have never witnessed the problem when running the script by hand to try and duplicate, witness any error output, etc. Any idea how to troubleshoot? Or how I can get rsync to verify the file has been transferred without error? A more reliable alternative than using rsync for this situation? Thanks, Scott

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OT: Slow browsers or slow connections?
by Mark Hull-Richter 14 Nov '07

14 Nov '07

I have AT&T (formerly SBC) DSL for my primary internet connection here, and tonight it has been exceptionally, extraordinarily S - L - O - W.... Pages that normally load in, at most, seconds, are taking several minutes to locate, even common, frequent access pages like Google, Gmail, etc. I called AT&T, of course, and all they know about is IE, which, as you can probably guess, I rarely use. Normally I use SeaMonkey, with Firefox as a last ditch backup, on the Linux side, and SeaMonkey in my Windows VM-guest, with IE as the absolute last ditch backup. I tried their on-the-phone-quick-fix and turned off my modem and router for the recommended 20 seconds (more like 30), and this did no good as far as I could see. (The router is for convenience when I need multiple connections - typically, as now, this is the only computer connected to it.) However, I played along with their "support" person (they need more support than they give out...), and their suggestion was to go into IE (groan, double groan to fire up the Windows VM guest), delete all cookies, delete all files, and clear the history. Funny thing is, that worked - for IE. So, I go back to my CentOS SeaMonkey and clear the cache and the history. I'm not sure what else to do, though, because that didn't solve the problem, and Firefox is as slow as my SeaMonkey. Any suggestions? Are there corollaries to IE's "files" for SM or Ff? Thanks. mhr

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RE: [centos] how to know when files have finished ftping? --antairrestored
by Colht, Charles 14 Nov '07

14 Nov '07

Just to chime in here, what I use is another file that is transferred last. It can be zero sized. Just some name you look for and then delete when you are done for next time. It doesn't matter how long that one takes because you will know that the important files are already transferred. chuck -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Neil Aggarwal Sent: Monday, November 12, 2007 7:28 AM To: 'CentOS mailing list' Subject: RE: [centos] how to know when files have finished ftping? --antairrestored Geoff: I used lsof. Thanks everyone for the suggestions. Neil -- Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details. > Here's a thought: what about doing an lsof? If a file is > still being written by ftpd it should be open for writing. _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos *********************************************************************************** This transmittal may contain confidential information intended solely for the addressee. If you are not the intended recipient, you are hereby notified that you have received this transmittal in error; any review, dissemination, distribution or copying of this transmittal is strictly prohibited. If you have received this communication in error, please notify us immediately by reply or by telephone (collect at 907-297-3000) and ask to speak with the message sender. In addition, please immediately delete this message and all attachments. Thank you. ACS

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mirrors.kernel.org path change...
by John R Pierce 14 Nov '07

14 Nov '07

minor thing, the URL has changed for the mirrors.kernel.org rsync... its now.. rsync://mirrors.kernel.org/mirrors/centos or mirrors.kernel.org::mirrors/centos (previously, it was rsync://mirrors.kernel.org/centos ) this probably should be updated on http://www.centos.org/modules/tinycontent/index.php?id=13

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Pre-built kernel 2.6.20 for CentOS 5?
by Kevin Thorpe 14 Nov '07

14 Nov '07

Can anyone point me towards a pre-built kernel 2.6.20 for CentOS 5? I need the later version to run Yosemite backup. I thought I was being clever and installed a Fedora kernel and it worked 99%, sadly the bit that didn't was the tape device which rather spoiled things. thanks, Kevin Thorpe

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Re: [CentOS] configuring sendmails domain
by Ross S. W. Walker 14 Nov '07

14 Nov '07

Look at submit.mc for email sent from localhost. -Ross -----Original Message----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: centos(a)centos.org <centos(a)centos.org> Sent: Tue Nov 13 21:31:28 2007 Subject: [CentOS] configuring sendmails domain > > ----- Original Message ----- > From: "Jerry Geis" <geisj at pagestation.com <http://lists.centos.org/mailman/listinfo/centos>> > To: "CentOS ML" <centos at centos.org <http://lists.centos.org/mailman/listinfo/centos>> > Sent: Wednesday, November 14, 2007 12:11:02 PM (GMT+1000) Australia/Brisbane > Subject: [CentOS] configuring sendmails domain > > I tried editing sendmail.cf and changing the Dj line to X.com > so any email originating from my machine would be X.com not m.X.com > where m is machine name. > > I typed make in the /etc/mail directory and did service sendmail restart. > > This did not work. email still shows as m.X.com > > What am I missing so as to NOT have the machine name in the email address. > I just want the domain. > > Thanks, > > Jerry > _______________________________________________ > CentOS mailing list > CentOS at centos.org <http://lists.centos.org/mailman/listinfo/centos> > http://lists.centos.org/mailman/listinfo/centos > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > > > > Editing the .cf file is not the way to do this sort of thing. Ensure you have the sendmail-cf package installed and make your changes to the /etc/mail/sendmail.mc file and then type 'make' to build the new .cf. Then restart sendmail. > > > Incidentally, the .mc file has the necessary parameters in it that you may be looking for; > > > dnl MASQUERADE_AS(`mydomain.com')dnl > dnl # > dnl # masquerade not just the headers, but the envelope as well > dnl # > dnl FEATURE(masquerade_envelope)dnl > dnl # > dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as well > dnl # > dnl FEATURE(masquerade_entire_domain)dnl > dnl # > dnl MASQUERADE_DOMAIN(localhost)dnl > dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl > dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl > dnl MASQUERADE_DOMAIN(mydomain.lan)dnl > > > I changed all the above to my X.com domain removed the dnl's on the line did a make in the /etc/mail directory, did service sendmail restart and I still get m.X.com and not just X.com What am I still missing something? Thanks, Jerry _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

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yum hangs when installing uucp
by Dave 14 Nov '07

14 Nov '07

Hello, I've got a CentOS 5 box. I want to install the uucp rpm to give access to the cu command. I do a yum -y install uucp and yum is hanging on the transaction test. I get the file downloaded fine, but on transaction test yum freezes and i have to kill it's pid to stop it. Any ideas? I'm looking for a program for serial terminals. Thanks. Dave.

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Need advice on storage
by boisvert.guy＠videotron.ca 14 Nov '07

14 Nov '07

Hi all, I have a CentOS 4.5 server running on a workstation mainboard (PCI Slots only). We have now one 200 Gigs IDE disk dedicated for e-mail server storage. We use Communigate Pro and the server has 45 Outlook clients with the MAPI connector (All mailboxes on the server). When a user opens Outlook, a refresh of the local cache is performed for his data. There is a big "Public" area (about 50 Gigs) where all the projects data/infos are stored (all that on the same IDE hard disk). Clients cache updates are performed on e-mail folder access. We noticed server response slowdown as the number of user increased (quite normal!). Now we want to upgrade the server to get better performance. I'd like to know if, as a temporary cheap upgrade, software RAID with a Sil 3124 and 2 x Raptor WD740ADFD (74 Gigs with NCQ) in Software RAID 0 would bring a significant performance boost. If it is the case, that would permit to phase out this server in 1-2 years and we'd upgrade the whole server after.Here a the specs of the actual "server":Asus A7V600 (I know, that's bad but it just works!!!)Athlon 2500+1 Gig RAM (we'll probably put 1 more gig soon if it can help)System Hard Disk: WD 80 GigsMail hard disk: Western Digital WD2000JB (IDE 200 Gigs) EXT3 on LVMBackups hard disk: 1 x 200 Gigs IDE, 1 x 320 Gigs SATA, 1 x 750 Gigs SATA --> LVM Total of 1270 GigsAny help / experience would be appreciated.TIA,Guy Boisvert

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Re: [CentOS] Need advice on storage
by Ross S. W. Walker 14 Nov '07

14 Nov '07

If you are seeing iowaits that high then something needs to be done. You CAN gain performance by striping, but the downtime due to disk failure can make your decision making skills look flawed. For a mail server I highly recommend RAID10 and drives with high RPM so you get better random io performance as 99% of io on a mail home server will be random io and while regular SATA drives would be ok for a file server which is mostly sequential they will stack up io waits on a busy mail or database server. The raptors are costly because they run at 10k rpm and have low seek times, this gives them much better random io performance, but sequential io is the same with regular SATA drives. In fact sequential io performance is almost identical between 7200rpm SATA and 15000rpm SAS the real difference is in random io where the 15k drives are 2x faster (1.2MB of 4k random ios a second versus 640KB of 4k random ios a second, unbuffered). If you have an external enclosure then that will help, but make sure the array is compatible with the drives you want. SATA disks cannot go into a SCSI array, though some SAS enclosures and controllers allow you to mix SAS and SATA drives (LSI is one). Performance can trump size here so if the choice is between 200GB 7200 rpm SATA drives or 72GB 15000rpm SAS drives, if your data fits onto the 72GB drives (probably 140GB if in a 4 drive RAID10) go with the 72GB drives (taking growth into consideration too). Hardware RAID can help too if you utilize onboard battery backed up write-back cache. The more write-back cache the better, just make sure it is battery backed up (BBU). -Ross -----Original Message----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: CentOS mailing list <centos(a)centos.org> Sent: Tue Nov 13 01:58:27 2007 Subject: Re: [CentOS] Need advice on storage ----- Message d'origine ----- De: Kenneth Price <kprice(a)nowyouknow.net> Date: Lundi, Novembre 12, 2007 10:58 pm Objet: Re: [CentOS] Need advice on storage À: CentOS mailing list <centos(a)centos.org> > > You've already received a few responses about reconfiguring your > entireserver, so I'll avoid that route and simply answer your > question straight. > > "No" > > There will not be a "significant" performance boost striping > only 2 drives. > The 10K RPM Raptors alone will definitely increase performance, > but there > is little/no real advantage striping them together. Getting any > significant performance increase from a RAID array really > requires at > *least* 4 drives ... the more the merrier ... although I'll > probably catch > some flack from that statement. :-) > > A previous poster mentioned increasing your RAM from 1Gb to 2Gb. > That was > an excellent idea and should be done in parallel with whatever drive > changes you make. > > Regards, > Ken > > Thanks Ken. That's a good thing to know that software striping won't really boost performance, i then won't waste money on that avenue. I cannot explain why as i don't know about Linux drivers architecture and general system low level behavior but maybe somebody on this list could give us a clue. As i said on my previous post, i found that the server is inside a rack that has a VTRAK 15100 SCSI to SATA Enclosure with a free SCSI bus (the unit has 2 independant bus) and hard disk slots. I think we have a spare Adaptec 39160 so if it's the case, i could go with this solution and buy 4 x WD 250 Gigs "YS" (RAID) serie drives @ about 75$ each and put all this in RAID 10. The unit supports NCQ. It remains to be seen how well it can perform even if they are talking about "up to 200 MBps". Regards, Guy Boisvert ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

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Discuss November 2007