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Re: [CentOS] More oddities...
by m.roth＠5-cent.us 02 May '18

02 May '18

From: Marcelo Ricardo Leitner <marcelo.leitner(a)gmail.com> On Tue, May 01, 2018 at 03:28:29PM -0400, m.roth(a)5-cent.us wrote: >> My manager's workstation is C 7.4, and it started screaming yesterday >> about issues with ata5. > >> Except that he has one internal and one external drive, and a DVD. Anyone >> have clues as to what could be causing this, or where to start looking? > ata'5' is about the port it is connected and not related to the count > of devices in there. > You should be able to match it with: > ls -l /sys/class/block | grep ata5 > There sould be a symlink like: > lrwxrwxrwx. 1 root root 0 abr 29 19:23 sda -> > ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda > Or by going through boot dmesg. Good thought... but no joy. I see links with sda, sda1, sdb, sdb1 and sdb2, and four for dm-[0-3], and nothing else. Looking in that symlink, I see ll /sys/devices/pci0000\:00/0000\:00\:1f.2/ata5/ total 0 drwxr-xr-x. 6 root root 0 May 2 10:12 ./ drwxr-xr-x. 10 root root 0 May 2 10:11 ../ drwxr-xr-x. 3 root root 0 May 2 10:14 ata_port/ drwxr-xr-x. 4 root root 0 May 2 10:14 host4/ drwxr-xr-x. 5 root root 0 May 2 10:14 link5/ drwxr-xr-x. 2 root root 0 May 2 10:14 power/ -rw-r--r--. 1 root root 4096 May 2 10:14 uevent $ ll /sys/devices/pci0000\:00/0000\:00\:1f.2/ata5/host4/ total 0 drwxr-xr-x. 4 root root 0 May 2 10:14 ./ drwxr-xr-x. 6 root root 0 May 2 10:12 ../ drwxr-xr-x. 2 root root 0 May 2 10:15 power/ drwxr-xr-x. 3 root root 0 May 2 10:15 scsi_host/ lrwxrwxrwx. 1 root root 0 May 1 17:59 subsystem -> ../../../../../bus/scsi/ -rw-r--r--. 1 root root 4096 May 2 10:15 uevent Finally, I did ll /sys/devices/pci0000\:00/0000\:00\:1f.2/ata5/host4/scsi_host/host4/ total 0 drwxr-xr-x. 3 root root 0 May 2 10:15 ./ drwxr-xr-x. 3 root root 0 May 2 10:15 ../ -rw-r--r--. 1 root root 4096 May 2 10:15 active_mode -r--r--r--. 1 root root 4096 May 2 10:15 ahci_host_cap2 -r--r--r--. 1 root root 4096 May 2 10:15 ahci_host_caps -r--r--r--. 1 root root 4096 May 2 10:15 ahci_host_version -r--r--r--. 1 root root 4096 May 2 10:15 ahci_port_cmd -r--r--r--. 1 root root 4096 May 2 10:15 can_queue -r--r--r--. 1 root root 4096 May 2 10:15 cmd_per_lun lrwxrwxrwx. 1 root root 0 May 2 10:15 device -> ../../../host4/ -rw-r--r--. 1 root root 4096 May 2 10:15 eh_deadline -rw-r--r--. 1 root root 4096 May 2 10:15 em_buffer -rw-r--r--. 1 root root 4096 May 2 10:15 em_message -r--r--r--. 1 root root 4096 May 2 10:15 em_message_supported -r--r--r--. 1 root root 4096 May 2 10:15 em_message_type -r--r--r--. 1 root root 4096 May 2 10:15 host_busy --w-------. 1 root root 4096 May 2 10:15 host_reset -rw-r--r--. 1 root root 4096 May 1 18:00 link_power_management_policy drwxr-xr-x. 2 root root 0 May 2 10:15 power/ -r--r--r--. 1 root root 4096 May 2 10:15 proc_name -r--r--r--. 1 root root 4096 May 2 10:15 prot_capabilities -r--r--r--. 1 root root 4096 May 2 10:15 prot_guard_type --w-------. 1 root root 4096 May 2 10:15 scan -r--r--r--. 1 root root 4096 May 2 10:15 sg_prot_tablesize -r--r--r--. 1 root root 4096 May 2 10:15 sg_tablesize -rw-r--r--. 1 root root 4096 May 2 10:15 state lrwxrwxrwx. 1 root root 0 May 1 18:00 subsystem -> ../../../../../../../class/scsi_host/ -rw-r--r--. 1 root root 4096 May 2 10:15 supported_mode -rw-r--r--. 1 root root 4096 May 2 10:15 uevent -r--r--r--. 1 root root 4096 May 2 10:15 unchecked_isa_dma -r--r--r--. 1 root root 4096 May 2 10:15 unique_id -r--r--r--. 1 root root 4096 May 2 10:15 use_blk_mq And nothing else. Note that the it's running 3.10.0-862.el7.x86_64. Seems to have given up, for at least now, but could start flooding the logs again.... mark

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More oddities...
by m.roth＠5-cent.us 01 May '18

01 May '18

My manager's workstation is C 7.4, and it started screaming yesterday about issues with ata5. Except that he has one internal and one external drive, and a DVD. Anyone have clues as to what could be causing this, or where to start looking? He's rebooted it, and before that, I tried rescan-scsi-bus.sh, with no joy. mark

2 1

OT: hardware, odd PSU issue
by m.roth＠5-cent.us 01 May '18

01 May '18

We have an HP blade enclosure for SL230s Gen 8. Went to replace the four PSUs in it, 1500W. Got them from one vendor, "refurbished"... and *none* worked. Returned them, and got them from another vendor, and *none* worked. Something odd here. For one, the LED doesn't light up when I'm holding the PSU and plug it in. Then there's something I just noticed late yesterday: in the socket of the PSU, on the shorter side of the trapezoid, there are four copper strips, running from the inside out. Anyone run into this before? Do these not power up, because they need some sort of odd power cord with something for those copper strips? mark, befuddled

1 0

Which Videoconference System
by Joe 01 May '18

01 May '18

Hello, i m looking for a webrowser-based video conference/meeting server running on centos 7. I found jitsi, bigbluebutton, Apache OpenMeetings and more. But none has a (good) tutorial for installing on centos. You have a tip for me for a project or good tutorials? thx. joe

1 0

elrepo kmod-nvidia issue with update
by Chuck Campbell 01 May '18

01 May '18

when I do yum update, elrepo offers kmod-nvifdia, but yum does this: --> Processing Dependency: kernel(sme_me_mask) = 0x17fbce60 for package: kmod-nvidia-390.48-2.el7_5.elrepo.x86_64 --> Processing Dependency: kernel(reservation_object_add_excl_fence) = 0xea98efc0 for package: kmod-nvidia-390.48-2.el7_5.elrepo.x86_64 --> Processing Dependency: kernel(drm_vblank_init) = 0xdcd50a49 for package: kmod-nvidia-390.48-2.el7_5.elrepo.x86_64 . . . repeatedly, then says: You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest Is there a problem on my end or theirs? -chuck -- ACCEL Services, Inc.| Specialists in Gravity, Magnetics | (713)993-0671 ph. | and Integrated Interpretation | (713)993-0608 fax 448 W. 19th St. #325| Since 1992 | (713)306-5794 cell Houston, TX, 77008 | Chuck Campbell | campbell(a)accelinc.com | President & Senior Geoscientist | "Integration means more than having all the maps at the same scale!"

4 3

Named log question
by Chuck Campbell 30 Apr '18

30 Apr '18

Is this mis-configuration, or just noise in my log? 29-Apr-2018 00:50:26.056 general: warning: managed-keys-zone: No DNSKEY RRSIGs found for '.': success: 1 Time(s) 29-Apr-2018 00:50:26.120 general: warning: managed-keys-zone: No DNSKEY RRSIGs found for 'dlv.isc.org': success: 1 Time(s) -chuck -- ACCEL Services, Inc.| Specialists in Gravity, Magnetics | (713)993-0671 ph. | and Integrated Interpretation | (713)993-0608 fax 448 W. 19th St. #325| Since 1992 | (713)306-5794 cell Houston, TX, 77008 | Chuck Campbell | campbell(a)accelinc.com | President & Senior Geoscientist | "Integration means more than having all the maps at the same scale!"

1 0

Network Performance
by Chris Olson 30 Apr '18

30 Apr '18

One of our summer interns has stayed on working part time on weekends during the school year. This schedule presents an opportunity for technical investigations and some needed performance testing. The last weekend assignment included data rate testing on one specific network pathway. Checking out previous network testing was the first assignment. Some five year old, archived SPARC/Solaris and Intel/Solaris network tests included ftp runs like the following: ftp> ftp> put "|dd if=/dev/zero bs=32768 count=8000" /dev/null 200 PORT command successful. 150 Binary data connection for /dev/null (IP Address). 8000+0 records in 8000+0 records out 226 Transfer complete. local: |dd if=/dev/zero bs=32768 count=8000 remote: /dev/null 262144000 bytes sent in 23 seconds (11081.79 Kbytes/s) ftp> There were dozens of examples of such ftp tests with varying block sizes, bidirectional transfers, destination files on RAID storage, and a mix of some system loading programs run independently and during the network performance testing. Also archived were a full complement of network tests with what looks like the original ttcp and possibly newer versions. These utilities looked like they would work on our CentOS 6 systems, but we did not find ttcp and the ftp tests failed. the piping from dd failed with a message indicating that: |dd was not a recognized file. We no longer have available CentOS systems with versions of the OS before CentOS 6. Could there have been a change to ftp that will not allow a source file specified in this way or would this transfer method have never worked on Linux?

3 2

How do I get the kernel srpm?
by Robert Heller 30 Apr '18

30 Apr '18

I tried to follow the work flow shown in https://wiki.centos.org/Sources, but it does not seem to work: I did this: mkdir CentOS pushd CentOS git clone https://git.centos.org/git/centos-git-common.git git clone https://git.centos.org/git/rpms/kernel.git pushd kernel/ git checkout c6 ../centos-git-common/get_sources.sh And I got the message: Missing metadata. Please run from inside a sources git repo What am I missing? -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

4 3

OT: thunderbird annoyance
by m.roth＠5-cent.us 30 Apr '18

30 Apr '18

Does anyone know if it's even possible to NOT cc myself when I hit reply all? Geez, that's what's in the sent folder.... mark

4 6

formating DVR-RW
by Michael Hennebry 29 Apr '18

29 Apr '18

My Centos 6 wodim tell me that it can only format DVD+RW. I have DVD-RWs. Even when I format a DVD-RW on my standalone DVD recorder, wodim still will not write to it. Is there a centos-6-useable mechanism for formatting and writing DVD-RWs? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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