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Multi-Card reader (SD, MMC, etc) and CONFIG_SCSI_MULTI_LUN kernel option in 34.0.2. Workaround
by J.J. Garcia 11 Aug '06

11 Aug '06

Hi folks, Im trying to get a multi-card reader on centos (SD, MMC, and so, 4 card slots) and i have read (http://www.cs.sfu.ca/~ggbaker/personal/cf-linux) that CONFIG_SCSI_MULTI_LUN should be enabled on kernel (=Y) but current 34.0.2 doesn't have it enabled by default, is there any particular reason to not be enabled? By the other hand i've also tweak the /etc/grub.conf file to boot the kernel with max_luns=32 and results are the same, only scsc lun=0 is recognized. At the same time using the workaround mentioned in the link pasted b4 regarding to modify the /etc/modules.conf to include 'options scsi_mod max_scsi_luns=8' gives the same results, no detection at all for the card slots. [root@sparkbox ~]# cat /proc/bus/usb/devices T: Bus=01 Lev=01 Prnt=01 Port=06 Cnt=03 Dev#= 7 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0644 ProdID=0200 Rev= 4.00 S: Manufacturer=TEAC S: Product=CA-200 S: SerialNumber=0000020307B2 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb- storage E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=125us E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms and /var/log/dmesg still shows: <...> scsi3 : SCSI emulation for USB Mass Storage devices Vendor: TEAC Model: USB HS-CF Card Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Attached scsi removable disk sdc at scsi3, channel 0, id 0, lun 0 USB Mass Storage device found at 7 <...> Instead of (if i understand well for this scsi3 line) after a [root@sparkbox]# sg_scan -i (it should show) /dev/sg2: scsi3 channel=0 id=0 lun=0 [em] type=0 Generic STORAGE DEVICE 0128 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] /dev/sg3: scsi3 channel=0 id=0 lun=1 [em] type=0 Generic STORAGE DEVICE 0128 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] /dev/sg4: scsi3 channel=0 id=0 lun=2 [em] type=0 Generic STORAGE DEVICE 0128 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] /dev/sg5: scsi3 channel=0 id=0 lun=3 [em] type=0 Generic STORAGE DEVICE 0128 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] But actually, [root@sparkbox ~]# sg_scan -i [root@sparkbox ~]# (shows nothing) And [root@sparkbox ~]# sg_map Stopping because no sg devices found Strange, could not find device /dev/sda mapped to sg device?? Strange, could not find device /dev/sdb mapped to sg device?? Strange, could not find device /dev/sdc mapped to sg device?? Strange, could not find device /dev/sdd mapped to sg device?? Looking at SCSI: [root@sparkbox ~]# cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDS728080PLA380 Rev: PF2O Type: Direct-Access ANSI SCSI revision: 05 Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: Genesys Model: USB to IDE Disk Rev: 0002 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: TEAC Model: USB HS-CF Card Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi4 Channel: 00 Id: 00 Lun: 00 Vendor: Model: USB DISK Pro Rev: 1.1b Type: Direct-Access ANSI SCSI revision: 02 And finally doing the last workaround found in the link from Greg Baker article for my scsi3 chain: [root@sparkbox ~]#echo >/proc/scsi/scsi "scsi add-single-device 3 0 0 1" [root@sparkbox ~]#echo >/proc/scsi/scsi "scsi add-single-device 3 0 0 2" [root@sparkbox ~]#echo >/proc/scsi/scsi "scsi add-single-device 3 0 0 3" Solves the identification: [root@sparkbox ~]# cat /proc/scsi/scsi Attached devices: <...> Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: TEAC Model: USB HS-CF Card Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi3 Channel: 00 Id: 00 Lun: 01 Vendor: TEAC Model: USB HS-xD/SM Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi3 Channel: 00 Id: 00 Lun: 02 Vendor: TEAC Model: USB HS-MS Card Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Host: scsi3 Channel: 00 Id: 00 Lun: 03 Vendor: TEAC Model: USB HS-SD Card Rev: 4.00 Type: Direct-Access ANSI SCSI revision: 02 Now, even without update the udev rules with a new rule It seems to work after inserting the SD (1GB card) card on card-reader, from dmesg: <...> SCSI device sdg: 2012160 512-byte hdwr sectors (1030 MB) sdg: Write Protect is off sdg: Mode Sense: 23 00 00 00 sdg: assuming drive cache: write through SCSI device sdg: 2012160 512-byte hdwr sectors (1030 MB) sdg: Write Protect is off sdg: Mode Sense: 23 00 00 00 sdg: assuming drive cache: write through sdg: sdg1 <...> Mounting the correct SD card on fstab and only remaining to update permissions/udev or pamconsole (not sure where) to get RW access for user space. Hope it helps and just to clarify for mentionned CONFIG_SCSI_MULTI_LUN option in kernel. Jose.

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CentOS-announce Digest, Vol 18, Issue 10
by centos-announce-request＠centos.org 11 Aug '06

11 Aug '06

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2006:0612 Important CentOS 4 i386 krb5 - security update (Johnny Hughes) 2. CESA-2006:0612 Important CentOS 4 x86_64 krb5 - security update (Johnny Hughes) 3. CESA-2006:0619 Moderate CentOS 3 i386 httpd - security update (Tru Huynh) 4. CESA-2006:0619 Moderate CentOS 3 x86_64 httpd - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 10 Aug 2006 12:30:52 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2006:0612 Important CentOS 4 i386 krb5 - security update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <1155231052.3805.77.camel(a)myth.home.local> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2006:0612 https://rhn.redhat.com/errata/RHSA-2006-0612.html The following updated files have been uploaded and are currently syncing to the mirrors: i386: krb5-devel-1.3.4-33.i386.rpm krb5-libs-1.3.4-33.i386.rpm krb5-server-1.3.4-33.i386.rpm krb5-workstation-1.3.4-33.i386.rpm src: krb5-1.3.4-33.src.rpm

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RE: [CentOS] OT: Measure 2U Server Amp Usage
by Mark Schoonover 10 Aug '06

10 Aug '06

Robert Moskowitz wrote: > Karl R. Balsmeier wrote: >> Hi, >> >> Running a bunch of CentOS servers on 2U supermicro equipment, >> usually with 8 drives on Adaptec SmartRAID V or LSI Megaraid. >> >> In designing a rack in a data center, the question arises as to how >> to measure the amperage the server uses, prior to investing in power >> drops that actually do that for you, even remotely, for about >> $260.00-300USD per unit. This number is the important one these >> days in determining rack/datacenter design. >> > I use the Radio Shack Amp meter. It has an inductance jaw that you > put over ONE wire to the device. This means you need a place on the > circuit that separates the hot and neutral wires. I have a special > rig: Mail plug - separate wires - Female receptacle. Of course I > have to unplug the device, put this rig in, test, then put things > back. > That's one way to measure the current, then multiply by the input voltage to get watts. I think a better way is to determine the max current that the system will use. If you have a 500 watt PSU, assume 85% efficiency, then by using the input voltage you can calculate the max input power the server is going to draw. I'd design the datacenter to support the max power level the server will need, not just what it takes to run the thing. Start up will draw the most power, approaching the max power output of the PSU, then it'll lower some once all the drives are up and spinning. It's somewhat an art, but you can get reasonably close to the entire power draw of your rack. In a pinch, I've added up all the UPSes and told the electrician 12000VA. They'll know what to do with that number. HTH Mark

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Help...about migration from redhat to centos in dell poweredge 2800
by Roberto Barrientos Molina 10 Aug '06

10 Aug '06

guau..first, i never think the response about my post, really really thanks all, i am not alone here..:-). ok, i send a second message with the other method than i don´t know if result. first, i am install the redhat 3 AS then i will apply the next sequence: "Import GPG Keys: rpm --import http://mirror.centos.org/centos/3.7/os/i386/RPM-GPG-KEY-CentOS-3 Install yum: rpm -Uvh --nodeps http://mirror.centos.org/centos/3.7/os/i386/RedHat/RPMS/yum-2.0.8-1.centos.… http://mirror.centos.org/centos/3.7/os/i386/RedHat/RPMS/centos-yumconf-1-11… http://mirror.centos.org/centos/3.7/os/i386/RedHat/RPMS/centos-yumcache-3.1… Update Release information: rpm -e redhat-release-3ES-13.6.2 && rpm -ivh http://mirror.centos.org/centos/3.7/os/i386/RedHat/RPMS/centos-release-3-7.… then just: yum upgrade " then i will hope upgrade to centos 4 :-) if result. in relations to my machine config is: Dell Power edge 2800 ,PROCESSOR, 80546K, 3.0G, 2M, XEON IRWINDALE, 4 scsi disk, 4 ethernet Gigabit. i have the software server assistant and open manage. i install de redhat 3 with the server assistant and configure RAID 5 by hardware (i select raid 5 after of read any docs...i hope my selecction was correct?). thanks all guys and thank to traduce me Guillermo "guau.. que respuesta, estoy emocionado, no estoy acostumbrado a la cooperacion entre pares en mi institucion...gracias" regards, roberto.-

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centos with qemu and kqemu
by Jerry Geis 10 Aug '06

10 Aug '06

Any one using qemu with centos and bridged network mode? I am running qemu as: qemu-system-x86_64 -hda centos4.i386.img -boot c -net nic -net tap I am still getting a 10.X.X.X address instead of a DHCP address on my local network. I have the /etc/qemu-ifup script as: #!/bin/sh sudo /sbin/ifconfig $1 0.0.0.0 promisc up sudo /usr/sbin/brctl addif br0 $1 sleep 2 which does run.... I have kqemu running and it is pretty zippy. I just cant get bridged network to work. I am running centos 4.3 on x86_64 (amd 4800+) and trying to emulate and centos4 i386 image. The image works its just not on my network. Jerry

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RE: [CentOS] Server Hacked: Cpanel
by Bowie Bailey 10 Aug '06

10 Aug '06

William L. Maltby wrote: > On Wed, 2006-08-09 at 17:26 -0400, Bowie Bailey wrote: > > William L. Maltby wrote: > > > The solution to that is a secure password manager. > > http://passwordsafe.sourceforge.net/ > > > > You just have to remember the one password and the program will track > > all of the rest for you. This way you can use gibberish passwords for > > important sites such as online banking and you don't have to remember > > them or write them down anywhere. The password database is encrypted > > using Twofish and SHA-256. > > I don't care for that concept. One password cracked gives access to all. > I would rather take the admitted risk of writing them down (in *my* > scenario, rather secure at home) and referring to that when needed. True, but if you make that one a good one and use it only for that purpose, the risks are minimal. > The ones I use frequently will be remembered. I don't use them on the > road at all, so that's reasonable. I prefer to not have passwords stored > on computers any more that necessary. I don't think it's a problem to have the passwords stored on the computer. Just make sure they're securely encrypted. > No I'll admit I fudge a *small* amount. Those who have access in my home > know windows only, not Linux and I have no shares with them. They are > TDU (Typical Dumb Users) and don't know how to use SSH, FTP, ... or even > how to find my comps on the LAN (now SMB node or Domain Controllers > here). > > > > The only real downside is that if you don't have access to the > > password manager, you don't have access to anything else either. > > Well, I do consider the one password exposes all a downside. But I also > grant that it is more secure than many alternatives. You know what they say: "You can put all your eggs in one basket, but WATCH THAT BASKET!" As long as you are extremely careful with the access password, you shouldn't have a problem. I will take this risk for the advantage of being able to easily use highly secure passwords. For example, my online banking password is a sequence of random characters. I don't have to remember it or type it. If I didn't have a tool like this, I would have to either write it down somewhere or use a less-secure password that I could remember. > > Oh...and don't forget backup the password database! :) > > I'm finalizing my LVM-based snapshots with aging of deleted files right > now, so I will be covered. That works, but a simple backup copy to a floppy disk or external hard drive works as well. > Thanks for the URL. I will go take a look. My mind is not yet > rusted closed even if (... *when*) I think I'm right! :-) The creator of this tool is a rather paranoid security expert. I figure if he is willing to use it, it's worth a look. http://schneier.com/ (note that the Password Safe information on that page refers to an older version that used Blowfish rather than Twofish) -- Bowie

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undelete
by Jerry Geis 10 Aug '06

10 Aug '06

I just removed a bunch of Personal stuff I should not have. Is there anyway to undelete??? Jerry

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MD raid tools ... did i missed something?
by "Petr \"Qaxi\" Klíma" 10 Aug '06

10 Aug '06

Hi I have a degraded array /dev/md2 ===================================================================== $ mdadm -D /dev/md2 /dev/md2: Version : 00.90.01 Creation Time : Thu Oct 6 20:31:57 2005 Raid Level : raid5 Array Size : 221953536 (211.67 GiB 227.28 GB) Device Size : 110976768 (105.84 GiB 113.64 GB) Raid Devices : 3 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Thu Aug 10 07:32:45 2006 State : dirty, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 256K Number Major Minor RaidDevice State 0 0 0 -1 removed 1 8 21 1 active sync /dev/sdb5 2 8 37 2 active sync /dev/sdc5 UUID : 4c77d8a9:3952f00b:876ce47a:a65d5522 Events : 0.12152695 ===================================================================== I need to add the 3rd partition, so I open documentation http://www.centos.org/docs/4/html/rhel-isa-en-4/s1-storage-rhlspec.html#S2-… (I know the RTFM ;-) But in chapter 5.9.9.2. they want tool caled "raidhotadd" What was my wonder when it is not included in CentOS 4.3 ===================================================================== # yum provides raidhotadd Searching Packages: Setting up repositories update 100% |=========================| 951 B 00:00 base 100% |=========================| 951 B 00:00 local 100% |=========================| 951 B 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=========================| 71 kB 00:00 update : ################################################## 195/195 Added 0 new packages, deleted 2 old in 0.32 seconds Importing Additional filelist information for packages filelists.xml.gz 100% |=========================| 697 kB 00:00 update : ################################################## 195/195 Added 32 new packages, deleted 0 old in 2.51 seconds No Matches found ===================================================================== How can I repair the MD device? -- Petr Klíma e-mail: qaxi(a)seznam.cz

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CentOS-announce Digest, Vol 18, Issue 9
by centos-announce-request＠centos.org 10 Aug '06

10 Aug '06

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2006:0612 Important CentOS 4 s390(x) krb5 - security update (Pasi Pirhonen) 2. CESA-2006:0614-4: Low CentOS 2 i386 tzdata enhancement update (John Newbigin) ---------------------------------------------------------------------- Message: 1 Date: Wed, 9 Aug 2006 16:28:36 +0300 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2006:0612 Important CentOS 4 s390(x) krb5 - security update To: centos-announce(a)centos.org Message-ID: <20060809132836.GD18903(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2006:0612 https://rhn.redhat.com/errata/RHSA-2006-0612.html The following updated files have been uploaded and are currently syncing to the mirrors: s390: updates/s390/RPMS/krb5-devel-1.3.4-33.s390.rpm updates/s390/RPMS/krb5-libs-1.3.4-33.s390.rpm updates/s390/RPMS/krb5-server-1.3.4-33.s390.rpm updates/s390/RPMS/krb5-workstation-1.3.4-33.s390.rpm s390x: updates/s390x/RPMS/krb5-devel-1.3.4-33.s390x.rpm updates/s390x/RPMS/krb5-libs-1.3.4-33.s390x.rpm updates/s390x/RPMS/krb5-server-1.3.4-33.s390x.rpm updates/s390x/RPMS/krb5-workstation-1.3.4-33.s390x.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

1 0

Wifi wpa_supplicant with atheros successes or failures?
by Max H. 10 Aug '06

10 Aug '06

I remember being a small part of and following this thread a few months ago. <http://lists.centos.org/pipermail/centos/2006-May/065091.html> I've been attempting a go at getting wpa_supplicant running on CentOS 4.3 and haven't had much luck. I'm assuming my failure is my lack of knowledge on the subject, but anyways. First, my normal setup is as follows: IBM Thinkpad R40 Ethernet controller: Atheros Communications, Inc. AR5211 802.11ab NIC (rev 01) Works great and has been working great for over a year now off the madwifi drivers at <http://atrpms.net/dist/el4/madwifi/>. I've done a bit of Googling the past few days as well. One link I follow it mentions about CentOS/RHEL not supporting wpa_supplicant in the current kernel, and that you'd have to recompile your kernel. Other threads I've read of successes, but usually not much detail is provided and it's done so through compiling the drivers and what not. My question is: Has anyone had success off the RPMs on atrpms? I've attempted a shot at it with these: <http://atrpms.net/dist/el4/wpa_supplicant/> and haven't had much luck. It installs after I get a few dependencies and I can configure the .conf file, but after that it just gets really upset about doing anything. Perhaps I can't get it working due to confusion of the packages that I need or don't need. Currently, I'm running the kernel module packages from the madwifi section at atrpms. Any thoughts, help, or comments from the peanut gallery are greatly appreciated. :) Thanks! Max

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