Discuss June 2025

discuss@lists.centos.org

12 participants
11 discussions

Memory vs. Display Card
by Rick 28 Oct '25

28 Oct '25

Since memory has become quite cheap lately I decided to move from 2 GB to 6. When I installed the memory every thing was fine until I went to run level 5. At that point the screen turned to garbage and the system froze. Is there a way to fix this so I can use the memory I bought? Do I need a new display card? Current hardware: Intel D975XBX2 Motherboard VGA compatible controller: ATI Technologies Inc RV505 [Radeon X1550 64-bit] -- http://www.spinics.net/lists/

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SSD for Centos SWAP /tmp & /var/ partition
by Keith Roberts 03 Sep '25

03 Sep '25

Has anyone actually used a SSD in a Centos setup? My little experiment with a s/h WD drive for /tmp and SWAP partitions kicked the bucket on Wednesday, when the poor WD drive caught the click-of-death. It was a s/h drive to start with and lasted about 4 months. But that was without the /var/log/ partition being written to it, as I mounted that back onto /var/log from the original drive. So I had to install another (WD) drive, and repartion it and rebuild my RPM package database, from the backed-up Packages file. That seems to be all OK now. I'm wondering if it would be a good idea to use a new SSD for moving all the disk i/o to, that Linux likes to do so often. Plus putting SWAP onto a decent SSD should speed things up somewhat. Here's a short video of a laptop fitted with a SSD drive booting macOS, compared to a similar laptop booting from the standard HDD. The laptop with the SSD boots and loads some apps in 28 seconds. The other one takes twice as long. http://eshop.macsales.com/shop/SSD/OWC/Mercury_Extreme_Pro_6G/?utm_source=t… Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------

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Re: Samba on Centos 6
by Dave Close 27 Jun '25

27 Jun '25

shimi wrote: >Maybe it's statically assigned to the MAC (a.k.a. DHCP Reservation) in the >dhcpd.conf itself... Again, as I wrote initially, "The C6 DHCP server has a defined static IP address for this PC based on its MAC address." That's NOT the "old" address dhcpd continues to use; it's what I want it to offer. But it doesn't and continues to offer the old address. -- Dave Close, Compata, Irvine CA "I think there is a world market dave(a)compata.com, +1 714 434 7359 for about five computers." dhclose(a)alumni.caltech.edu -- Thomas J. Watson, 1945

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Re: Samba on Centos 6
by Dave Close 27 Jun '25

27 Jun '25

I'm still trying to get away from Centos 6 but I have to get some other things working first so the business keeps running. Now I'm trying to get a new IP address for a Windows 10 PC. No matter what I do, it continues to get the same old address. The C6 DHCP server has a defined static IP address for this PC based on its MAC address. I've deleted all references to the old address in /var/lib/dhcpd/dhcpd.leases and restarted dhcpd. I've found a way to get W10 to forget its old address and send DHCPDISCOVER to C6. But the C6 server responds by offering the old address, not the defined static address. Where is it keeping this old information? What additional change do I need to make to the C6 DHCP server to get it to forget the old address and respond properly to the discover request? -- Dave Close, Compata, Irvine CA +1 714 434 7359 dave(a)compata.com dhclose(a)alumni.caltech.edu "Intelligence is like four-wheel drive. It only allows you to get stuck in more remote places." -- Garrison Keillor

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Gluster issue with qcow2 files?
by lejeczek 26 Jun '25

26 Jun '25

Hi guys. I'm experiencing a weird issues with GlusterFS on my Centos 9 Stream. I emailed gluster mailing list but - although list is quiet - my emails do not get through, though I receive email from that list(perhaps some dmarc/dkim with Yahoo issues as other mailing list had it) So I described it here - https://github.com/gluster/glusterfs/issues/4588 Does anybody here sees the same or similar, but if not still, all thoughts are much appreciated. thanks, L.

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du, df (other tools?) way of reporting file/system sizes
by lejeczek 25 Jun '25

25 Jun '25

hi guys. I have two virtually identical hardware boxes which report qcow2 sizes differently: -> $ du -xh /00-VMsy//enc.vdb.back1.proxmox.qcow2 2.9G /00-VMsy//enc.vdb.back1.proxmox.qcow2 -> $ du -xh /00-VMsy//enc.vdb.back1.proxmox.qcow2 71G /00-VMsy//enc.vdb.back1.proxmox.qcow2 I checked I though obvious places: ext4 header shows the same features, I also looked at NVMes which all are formated with the same block size, mountpoins mount the same way. But, I must be still missing something... trivial? I'm thinking - perhaps some kernel tunables - but if so, which ones I cannot find. 'ls' reports the same everywhere, virtual 71G size. (so with spares) All thoughts shared are much appreciated. thanks, L.

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Problems with CentOS 8 kickstart
by Hooton, Gerard 23 Jun '25

23 Jun '25

Hi All, I am having problems with a kickstart install of CentOS 8 When I try to do a completely automated install using PXE/UEFI it get to the point where it reads the kickstart config file. Then I see the following message "kickstart install Started cancel waiting for multipath siblings for nvme0n1" This is what I have in the kickstart file # Clear the Master Boot Record zerombr # Partition clearing information clearpart --all --initlabel autopart --nohome --type=lvm --fstype=xfs ================ When I install from a USB drive it works OK and I have the following in /dev/disk/by-id lrwxrwxrwx. 1 root root 13 Jul 5 10:28 nvme-SAMSUNG_MZVL2512HCJQ-00BL7_S64KNE0R161810 -> ../../nvme0n1 lrwxrwxrwx. 1 root root 13 Jul 5 10:28 nvme-eui.002538b11102f46d -> ../../nvme0n1 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 wwn-eui.002538b11102f46d-part3 -> ../../nvme0n1p3 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-SAMSUNG_MZVL2512HCJQ-00BL7_S64KNE0R161810-part3 -> ../../nvme0n1p3 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-eui.002538b11102f46d-part3 -> ../../nvme0n1p3 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 lvm-pv-uuid-5Dg4mg-saHa-hJJ6-n5a8-MxBS-gdFi-5jPoNn -> ../../nvme0n1p3 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 wwn-eui.002538b11102f46d-part2 UNG_MZVL2512HCJQ-0-> ../../nvme0n1p2 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-SAMSUNG_MZVL2512HCJQ-00BL7_S64KNE0R161810-part2 -> ../../nvme0n1p2 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-eui.002538b11102f46d-part2 -> ../../nvme0n1p2 drwxr-xr-x. 2 root root 400 Jul 5 10:28 . lrwxrwxrwx. 1 root root 15 Jul 5 10:28 wwn-eui.002538b11102f46d-part1 -> ../../nvme0n1p1 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-SAMSUNG_MZVL2512HCJQ-00BL7_S64KNE0R161810-part1 -> ../../nvme0n1p1 lrwxrwxrwx. 1 root root 15 Jul 5 10:28 nvme-eui.002538b11102f46d-part1 -> ../../nvme0n1p1 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-uuid-LVM-qQok4M7AOo1TxZZ42GwZcbuVNBs0hnkKtEdtLjwJQyIdxJcSvPv8TEAjwYGMv6yU -> ../../dm-0 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-uuid-LVM-qQok4M7AOo1TxZZ42GwZcbuVNBs0hnkKAooqrczySYJyiHvUAUji9oScPN2cVi7J -> ../../dm-1 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-name-cs_uews027-swap -> ../../dm-1 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-name-cs_uews027-root -> ../../dm-0 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-uuid-LVM-qQok4M7AOo1TxZZ42GwZcbuVNBs0hnkK5HZXbR2ow5xKGuD7jVe4UPzZm2qRLLXI -> ../../dm-2 lrwxrwxrwx. 1 root root 10 Jul 5 11:07 dm-name-cs_uews027-home -> ../../dm-2 It's looks like that I am not doing the disk drive stuff in the config file correctly. -- Gerard Hooton. Senior Technical Officer School of Engineering. University College Cork. College Road. Cork. Ireland. Loc8: WDR-04-60G Tel: +353 21 4902296 Mobile: +353 852813491

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Re: Samba on Centos 6
by Dave Close 07 Jun '25

07 Jun '25

I asked about SMB on Centos 6. shimi answered: >samba-swat is installed, fine, but was the service actually started? You >have not shown proof of that > >If it does, > >netstat -pltn > >Will tell you about listening ports (in case you got the networking wrong) As NMAP already indicated, port 901 is not open. It is not listed in the netstat output, either. But why not? -- Dave Close, Compata, Irvine CA +1 714 434 7359 dave(a)compata.com dhclose(a)alumni.caltech.edu "If every conceivable precaution is taken at first, one is often too discouraged to proceed at all." -- Archer John Porter Martin

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Samba on Centos 6
by Dave Close 05 Jun '25

05 Jun '25

Sorry to address such an old and obsolete system. A customer is migrating up from Centos 6 but needs to keep it working a little while longer. The issue now is that Windows users are unable to map a drive letter to a Centos directory. When they go to map the drive (to "\\ip\public"), Windows says the connection is rejected, with no further details. I presume some configuration is set wrong but I haven't been able to find it after reading man pages and Google stuff. Samba is installed and so is samba-swat. But I can't get port 901 open so I can verify proper configuration of SMB. Relevant lines in current files: /etc/services: swat 901/tcp smpnameres # Samba Web Administration Tool /etc/samba/smb.conf: [/public] path = /public public = yes writable = yes printable = yes write list = +users iptables -L: -A INPUT -p tcp -m tcp --dport 901 -j ACCEPT But: $ nmap -sT -p901 localhost PORT STATE SERVICE 901/tcp closed samba-swat Please tell me what I've missed or give a pointer to better help. -- Dave Close, Compata, Irvine CA +1 714 434 7359 dave(a)compata.com dhclose(a)alumni.caltech.edu "Moral indignation is jealousy with a halo." -- H.G. Wells

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Re: Samba on Centos 6
by Dave Close 04 Jun '25

04 Jun '25

I asked about SMB access to Centos 6. Pete Geenhuizen answered: >The solution for me has always been to install wsdd and as soon as it's >running windows can almost immediately see the host, and BTW you'll need >to install it on any upgrade that you install. Thanks. But YUM tells me no such package. Where do you get it? -- Dave Close, Compata, Irvine CA +1 714 434 7359 dave(a)compata.com dhclose(a)alumni.caltech.edu "It is well that there is no one without a fault; for he would not have a friend in the world." -- William Hazlitt

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