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NIC bonding - missing eth0?
by Smithies, Russell 18 Feb '11

18 Feb '11

I have nic bonding (mode=802.3ad) setup on 2 servers, both running Centos 5.5 In the "Active Aggregator Info", on one reports 4 ports - which is correct - but the other only reports 3 ports. It's always eth0 that shows a different aggregator ID. Changing the cables around so it hits a different port on the switch makes no difference. The switch is correctly configured for the port channel. The only difference between the 2 servers is one is running Xen (kernel-xen-2.6.18-194.32.1.el5.centos.plus) so I have a few virtual interfaces and bridges. Any ideas what might be happening? Thanx, Russell Smithies [root@invmhp01 ~]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.4.0 (October 7, 2008) Bonding Mode: IEEE 802.3ad Dynamic link aggregation Transmit Hash Policy: layer2 (0) MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 802.3ad info LACP rate: slow Active Aggregator Info: Aggregator ID: 19 Number of ports: 3 <<<<<<<< Actor Key: 17 Partner Key: 5 Partner Mac Address: 00:1b:90:3d:90:c0 Slave Interface: eth0 MII Status: up Link Failure Count: 0 Permanent HW addr: 1c:c1:de:74:97:5c Aggregator ID: 18 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 1c:c1:de:74:97:5d Aggregator ID: 19 Slave Interface: eth2 MII Status: up Link Failure Count: 0 Permanent HW addr: 1c:c1:de:74:97:5e Aggregator ID: 19 Slave Interface: eth3 MII Status: up Link Failure Count: 0 Permanent HW addr: 1c:c1:de:74:97:5f Aggregator ID: 19 [root@invmhp01 ~]# ifconfig bond0 Link encap:Ethernet HWaddr 1C:C1:DE:74:97:5C inet addr:147.158.130.183 Bcast:147.158.131.255 Mask:255.255.252.0 inet6 addr: fe80::1ec1:deff:fe74:975c/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:64087 errors:0 dropped:0 overruns:0 frame:0 TX packets:18179 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8293500 (7.9 MiB) TX bytes:31362799 (29.9 MiB) eth0 Link encap:Ethernet HWaddr 1C:C1:DE:74:97:5C UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:5770 errors:0 dropped:0 overruns:0 frame:0 TX packets:21 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:410102 (400.4 KiB) TX bytes:2524 (2.4 KiB) eth1 Link encap:Ethernet HWaddr 1C:C1:DE:74:97:5C UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:22247 errors:0 dropped:0 overruns:0 frame:0 TX packets:17436 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1424685 (1.3 MiB) TX bytes:31161969 (29.7 MiB) Interrupt:239 eth2 Link encap:Ethernet HWaddr 1C:C1:DE:74:97:5C UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:6223 errors:0 dropped:0 overruns:0 frame:0 TX packets:189 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:442326 (431.9 KiB) TX bytes:19993 (19.5 KiB) Interrupt:235 eth3 Link encap:Ethernet HWaddr 1C:C1:DE:74:97:5C UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:29852 errors:0 dropped:0 overruns:0 frame:0 TX packets:537 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6016657 (5.7 MiB) TX bytes:179281 (175.0 KiB) Interrupt:231 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:26818 errors:0 dropped:0 overruns:0 frame:0 TX packets:26818 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:38558929 (36.7 MiB) TX bytes:38558929 (36.7 MiB) peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:41498 errors:0 dropped:0 overruns:0 frame:0 TX packets:251 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3000012 (2.8 MiB) TX bytes:59877 (58.4 KiB) Interrupt:243 vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:127 errors:0 dropped:0 overruns:0 frame:0 TX packets:39354 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:15520 (15.1 KiB) TX bytes:2817598 (2.6 MiB) virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:42 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:8160 (7.9 KiB) xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:38746 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2217067 (2.1 MiB) TX bytes:0 (0.0 b) ======================================================================= Attention: The information contained in this message and/or attachments from AgResearch Limited is intended only for the persons or entities to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipients is prohibited by AgResearch Limited. If you have received this message in error, please notify the sender immediately. =======================================================================

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working with multiple password protected iSCSI targets on one host
by Rudi Ahlers 18 Feb '11

18 Feb '11

Hi, How do I setup multiple password protected iSCSI targets on Linux? I know that mounting a password protected iSCSI target requires modify these records with the appropriate values: node.session.auth.username = My_ISCSI_USR_NAME node.session.auth.password = MyPassword discovery.sendtargets.auth.username = My_ISCSI_USR_NAME discovery.sendtargets.auth.password = MyPassword But, now I need to mount another iSCSI target, from a different SAN that has a different username & password than whan I have configured here for the one already mounted. How do I tell iscsiadm which CHAP settings to use with which iSCSI target? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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write-back cache question
by James Chase 17 Feb '11

17 Feb '11

I have a perc5i (and perc5e) raid controller in my poweredge 2970 running centos 5.5. The RAID controller config is set for write-back policy, which I can confirm by checking in OpenManage. I also called Dell and ran their reporting application and had them double check to make sure everything looks OK hardware wise and they confirm that it does Yet when CentOS boots is appears to use the write through policy as can be seen below from dmesg output. Am I wrong that CentOS should query the RAID controller and go into the correct write mode: write-back? hub 1-5:1.0: 4 ports detected Vendor: DP Model: BACKPLANE Rev: 1.00 Type: Enclosure ANSI SCSI revision: 05 Vendor: DELL Model: PERC 5/i Rev: 1.03 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 2435317760 512-byte hdwr sectors (1246883 MB) sda: Write Protect is off sda: Mode Sense: 1f 00 00 08 SCSI device sda: drive cache: write through SCSI device sda: 2435317760 512-byte hdwr sectors (1246883 MB) sda: Write Protect is off sda: Mode Sense: 1f 00 00 08 SCSI device sda: drive cache: write through sda: sda1 sda2 sda3 sd 0:2:0:0: Attached scsi disk sda megasas: 0x1028:0x0015:0x1028:0x1f01: bus 16:slot 14:func 0 GSI 21 sharing vector 0x62 and IRQ 21 ACPI: PCI Interrupt 0000:10:0e.0[A] -> GSI 18 (level, low) -> IRQ 98 megasas: FW now in Ready state

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CentOS 5 on a Thinkpad T60 laptop
by Mathieu Baudier 17 Feb '11

17 Feb '11

Hello, I'm considering buying a second-hand Thinkpad T60 (with 2 GB RAM), as a secondary laptop in order to run CentOS 5 on the field. My main focus is therefore to have something robust, reliable and above all well compatible with CentOS. Hibernate / suspend feature are important to me, because that's the main issue I have with CentOS on other laptops. I have found the following information so far: http://www.thinkwiki.org/wiki/Installation_CentOS_5_on_a_Thinkpad_T60 The processor is a T2300 (so 32 bits apparently): http://ark.intel.com/Product.aspx?id=27233 I would be grateful if people having used CentOS on this model could share their experience (good or bad). Thanks in advance! Mathieu

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foo2oak-wrapper
by Hal Davison 17 Feb '11

17 Feb '11

Well...Greetings A client bought for me a HP Color LaserJet 1525nw printer. Installed on the local network as 192.168.1.117 A Google search brings back a number of conflicting options. Before I ball things up to much, I thought it best to check in for additional advice. The CUPS installer is complaining that it cannot locate the foo2oak-wrapper...and that it should be installed before using the printer. Yum is like me, clueless. -- Hal Davison --Hal. Observe Goal, Set the course, Burn the map Davison Consulting This correspondence was composed using Dragon Speaking Version 10 Peg#: 2007011701

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Looking for back versions of centos 3
by Bruce Ferrell 17 Feb '11

17 Feb '11

so far all the mirrors I've checked have 3.9 in the directory for 3.x Can anyone tell me how to get back versions? I'm looking for 3.4 or 3.5 Thanks in advance Bruce Ferrell

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some think there are no unemployed OSS folks
by Larry Vaden 17 Feb '11

17 Feb '11

On Wed, Feb 16, 2011 at 3:46 PM, John R. Dennison <jrd(a)gerdesas.com> wrote: > issue? I don't get it. You seem to think that money is the end > all be all for OSS. I would suggest that's a mindset you may > wish to change as money doesn't drive OSS. Are you saying there are no OSS folks who have lost their houses, their cars and their Internet connections and therefore have difficulty continuing contributing to OSS projects? I hope that is the truth, but I sincerely doubt that it is. Not substantially different in spirit than OSS is our Community Networking Grant program which supports ~ 300 not-for-profits. When we began in 1995, we offered free Internet connections to each school, library and hospital in our service area of 43 counties in north Texas. The recent downslide in the economy has made that immeasurably more difficult to continue, but we are continuing with it for another year. kind regards/ldv/vaden(a)texoma.net

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Looping Device unmounting problem
by dixan rodriges 17 Feb '11

17 Feb '11

Dear All, I have created 252 loop devices in my system and i mounted few iso filses into loop devices .when i rebooting the system error showing "faild to umount " how can forcefully umount the loop device -- Thanks and Regards, -------------------------------------- Dixson Rodriges, Sr.Support Engineer, MoB:+91-9388534765,09249500533 Email: dixan23@gmail.com,amdixan@gmail.com

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Flash No Longer Supported on RHEL 4
by Ben Mohilef 17 Feb '11

17 Feb '11

>From RHSA Announce: [RHSA-2011:0259-01] Critical: flash-plugin - 1-Month End Of Life Notice > The flash-plugin package on Red Hat Enterprise Linux 4 contains multiple > security flaws and should no longer be used. This is the 1-month > notification of Red Hat's plans to disable Adobe Flash Player 9 on Red Hat > Enterprise Linux 4. > > The Red Hat Security Response Team has rated this update as having critical > security impact. Adobe's security caveats apply to Linux as well as Windows. regards, benm

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Can't create mirrored LVM: Insufficient suitable allocatable extents for logical volume : 2560 more required
by Rudi Ahlers 17 Feb '11

17 Feb '11

I'm trying to setup a LVM mirror on 2 iSCS targets, but can't. I have added both /dev/sda & /dev/sdb to the LVM-RAID PV, and both have 500GB space. [root@HP-DL360 by-path]# pvscan PV /dev/cciss/c0d0p2 VG LVM lvm2 [136.59 GB / 2.69 GB free] PV /dev/sda VG LVM-RAID lvm2 [500.00 GB / 490.00 GB free] PV /dev/sdb VG LVM-RAID lvm2 [502.70 GB / 492.70 GB free] Total: 3 [1.11 TB] / in use: 3 [1.11 TB] / in no VG: 0 [0 ] [root@HP-DL360 by-path]# vgscan Reading all physical volumes. This may take a while... Found volume group "LVM" using metadata type lvm2 Found volume group "LVM-RAID" using metadata type lvm2 I can add a single LVM volume: [root@HP-DL360 by-path]# lvscan ACTIVE '/dev/LVM/root' [10.00 GB] inherit ACTIVE '/dev/LVM/swap' [3.91 GB] inherit ACTIVE '/dev/LVM/data' [120.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol0' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol1' [10.00 GB] inherit [root@HP-DL360 by-path]# lvcreate -L 10G LVM-RAID Logical volume "lvol2" created Yet, when I try and add a mirror, I get this: [root@HP-DL360 by-path]# lvcreate -L 10G -m1 LVM-RAID Insufficient suitable allocatable extents for logical volume : 2560 more required Unable to allocate extents for mirror(s). I can create a stripe though: [root@HP-DL360 by-path]# lvcreate -L 20G -i2 -I64 LVM-RAID Logical volume "lvol3" created [root@HP-DL360 by-path]# lvscan ACTIVE '/dev/LVM/root' [10.00 GB] inherit ACTIVE '/dev/LVM/swap' [3.91 GB] inherit ACTIVE '/dev/LVM/data' [120.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol0' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol1' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol2' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol3' [20.00 GB] inherit I could even create a large stripe: [root@HP-DL360 by-path]# lvcreate -L 600G -i2 -I64 LVM-RAID Logical volume "lvol4" created [root@HP-DL360 by-path]# lvscan ACTIVE '/dev/LVM/root' [10.00 GB] inherit ACTIVE '/dev/LVM/swap' [3.91 GB] inherit ACTIVE '/dev/LVM/data' [120.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol0' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol1' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol2' [10.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol3' [20.00 GB] inherit ACTIVE '/dev/LVM-RAID/lvol4' [600.00 GB] inherit [root@HP-DL360 by-path]# pvscan PV /dev/cciss/c0d0p2 VG LVM lvm2 [136.59 GB / 2.69 GB free] PV /dev/sda VG LVM-RAID lvm2 [500.00 GB / 180.00 GB free] PV /dev/sdb VG LVM-RAID lvm2 [502.70 GB / 172.70 GB free] Total: 3 [1.11 TB] / in use: 3 [1.11 TB] / in no VG: 0 [0 ] But, the mirror keeps failing: [root@HP-DL360 by-path]# lvcreate -L 10G -m1 LVM-RAID Insufficient suitable allocatable extents for logical volume : 2560 more required Unable to allocate extents for mirror(s). This is on CentOS 5.5 x64 [root@HP-DL360 by-path]# cat /etc/redhat-release CentOS release 5.5 (Final) [root@HP-DL360 by-path]# uname -a Linux HP-DL360 2.6.18-194.32.1.el5xen #1 SMP Wed Jan 5 18:44:24 EST 2011 x86_64 x86_64 x86_64 GNU/Linux Does anyone know why this happens? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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