Re: [CentOS] R730xd & SD card identfication
On Mon, 8 Mar 2021, Gregory P. Ennis wrote: On Sun, 7 Mar 2021 at 18:39, Pete Biggs wrote: On Sun, 2021-03-07 at 11:17 -0600, Gregory P. Ennis wrote: Everyone, We have migrated a platform to a Centos 8 host using kvm guest machines Recently I tried to copy one of the guests to the external SD card on the back of the Dell R730xd, but I have not been able to get the Centos 8 host to recognize the SD card. I can use DRAC interface of the R730xd to see that the SD card is being recognized and the status of the external SD slot is turned from inactive to active when the card is inserted. I have a nagging feeling at the back of my mind that that slot is associated with the iDrac system and not the main board. In any case doesn't that need a vFlash card not a standard SD/SDHC card? From Wikipedia: I think the SD card on the back of the IDRAC7 systems on the Dell 730xd are similar to this. They are accessible by the IDrac and dell software and are primarily there for emergency install of the hardware from known good media. I believe that vmware has a module which talks to the card so you can install software in vm's from said known good media. --- Simeon, You have anticipated what I am trying to do. I have been using Centos 8 as a host on a 730xd machine, for some Centos 7 guests. With the end of life of Centos 8 only 9 months away I decided to try to migrate everything to vmware. I purchased a sister 730xd to use as a lab computer, and am working on the skill sets necessary to migrate everything to vmware. I have really grown to like kvm and am still disappointed RedHat/IBM is backing away from Centos. I certainly have not been able to get Centos 8 to recognize the SD card, and have also not been able to get vmware on the sister machine to recognize either the SD card in the back slot or even when I have it plugged into a usb converter. The vmware problem is more likely related to my lack of experience with vmware; this is my first time to use it. As was said above, the sd card on the back of the machine is ONLY for use by the iDRAC. If you have iDRAC enterprise, it is not necessary to use it to install vmware esxi or for that matter any OS. All you need to do is mount the iso as a virtual disk using the iDRAC console. I do this all the time to both upgrade/install esxi and install centos/Windows/whatever vm's. Just do not try to mount the iso on a machine on a low bandwidth connection. It will take forever. :-( If you want to install vmware esxi on an sd card you need a isdm module. Something like: https://www.ebay.com/itm/PMR79-Dell-PowerEdge-R630-R730-R730xd-Dual-SD-Flash-Card-Reader-Module/233572427053?epid=1739290890&hash=item366200652d:g:YNQAAOSwBYhc3HPQ Keep in mind that Dell recommends that you do not install esxi newer than 6.7 on an sd card. They stopped offering the isdm modules on 14th gen servers with esxi 7.0 installed. They claim they see too many failures of the sd cards with 7.0. HTH, -- Tom m...@tdiehl.org ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
* On Sun, 7 Mar 2021, Gregory P. Ennis wrote: > > Everyone, > > We have migrated a platform to a Centos 8 host using kvm guest > machines > > Recently I tried to copy one of the guests to the external SD card on > the back of the Dell R730xd, but I have not been able to get the > Centos > 8 host to recognize the SD card. > > I can use DRAC interface of the R730xd to see that the SD card is > being > recognized and the status of the external SD slot is turned from > inactive to active when the card is inserted. On some of our machines (not Dell R730 series, so caveat emptor), I had to use the kmod-isci RPM from ELRepo.org to get EL8 hosts (both CentOS and RHEL) to recognize Intel SATA controllers. The same controller is recognized just fine by EL7 kernels, but the isci driver was removed in RHEL 8: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/considerations_in_adopting_rhel_8/index#removed-device-drivers_hardware-enablement My suggestion is that you try finding a driver at http://elrepo.org/. Paul, That is very helpful. Thank you !! Greg ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
> > On Sun, 7 Mar 2021 at 18:39, Pete Biggs wrote: > > > On Sun, 2021-03-07 at 11:17 -0600, Gregory P. Ennis wrote: > > > Everyone, > > > > > > We have migrated a platform to a Centos 8 host using kvm guest > > > machines > > > > > > Recently I tried to copy one of the guests to the external SD > > > card > > > on > > > the back of the Dell R730xd, but I have not been able to get the > > > Centos > > > 8 host to recognize the SD card. > > > > > > I can use DRAC interface of the R730xd to see that the SD card is > > > being > > > recognized and the status of the external SD slot is turned from > > > inactive to active when the card is inserted. > > > > > > > I have a nagging feeling at the back of my mind that that slot is > > associated with the iDrac system and not the main board. > > > > In any case doesn't that need a vFlash card not a standard SD/SDHC > > card? From Wikipedia: > > > > > > I think the SD card on the back of the IDRAC7 systems on the Dell > 730xd > are > similar to this. They are accessible by the IDrac and dell software > and > are > primarily there for emergency install of the hardware from known good > media. I believe that vmware has a module which talks to the card so > you > can install software in vm's from said known good media. > > --- > > > Simeon, > > You have anticipated what I am trying to do. I have been using > Centos > 8 as a host on a 730xd machine, for some Centos 7 guests. With the > end > of life of Centos 8 only 9 months away I decided to try to migrate > everything to vmware. I purchased a sister 730xd to use as a lab > computer, and am working on the skill sets necessary to migrate > everything to vmware. I have really grown to like kvm and am still > disappointed RedHat/IBM is backing away from Centos. > > I certainly have not been able to get Centos 8 to recognize the SD > card, and have also not been able to get vmware on the sister machine > to recognize either the SD card in the back slot or even when I have > it > plugged into a usb converter. The vmware problem is more likely > related to my lack of experience with vmware; this is my first time > to > use it. > > Thank you for your help! > > Greg Hi Greg, If your only problem with CentOS 8 is the support end, why not just switch the system to Oracle Linux 8 or another clone or even Red Hat EL with one of the new licenses, if they fit your needs? Moving the whole setup to VMware seems a bit overkill to me as you likely have to learn a completely new system and deal with new problems. Simon ___ Simon, Thanks for your advice. I have not moved anything yet, but am in the early stages of trying to figure out what to do. I have wanted to try my hand at VMware, but never had a reason to do so. I have not looked at Oracle 8, but will put this on my list of things to evaluate. Thanks again for your help! Greg ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
On Sun, 7 Mar 2021, Gregory P. Ennis wrote: Everyone, We have migrated a platform to a Centos 8 host using kvm guest machines Recently I tried to copy one of the guests to the external SD card on the back of the Dell R730xd, but I have not been able to get the Centos 8 host to recognize the SD card. I can use DRAC interface of the R730xd to see that the SD card is being recognized and the status of the external SD slot is turned from inactive to active when the card is inserted. On some of our machines (not Dell R730 series, so caveat emptor), I had to use the kmod-isci RPM from ELRepo.org to get EL8 hosts (both CentOS and RHEL) to recognize Intel SATA controllers. The same controller is recognized just fine by EL7 kernels, but the isci driver was removed in RHEL 8: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/considerations_in_adopting_rhel_8/index#removed-device-drivers_hardware-enablement My suggestion is that you try finding a driver at http://elrepo.org/. -- Paul Heinlein heinl...@madboa.com 45°38' N, 122°6' W ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
> > On Sun, 7 Mar 2021 at 18:39, Pete Biggs wrote: > >> On Sun, 2021-03-07 at 11:17 -0600, Gregory P. Ennis wrote: >> > Everyone, >> > >> > We have migrated a platform to a Centos 8 host using kvm guest >> > machines >> > >> > Recently I tried to copy one of the guests to the external SD card >> > on >> > the back of the Dell R730xd, but I have not been able to get the >> > Centos >> > 8 host to recognize the SD card. >> > >> > I can use DRAC interface of the R730xd to see that the SD card is >> > being >> > recognized and the status of the external SD slot is turned from >> > inactive to active when the card is inserted. >> > >> >> I have a nagging feeling at the back of my mind that that slot is >> associated with the iDrac system and not the main board. >> >> In any case doesn't that need a vFlash card not a standard SD/SDHC >> card? From Wikipedia: >> >> > > I think the SD card on the back of the IDRAC7 systems on the Dell 730xd > are > similar to this. They are accessible by the IDrac and dell software and > are > primarily there for emergency install of the hardware from known good > media. I believe that vmware has a module which talks to the card so > you > can install software in vm's from said known good media. > > --- > > Simeon, > > You have anticipated what I am trying to do. I have been using Centos > 8 as a host on a 730xd machine, for some Centos 7 guests. With the end > of life of Centos 8 only 9 months away I decided to try to migrate > everything to vmware. I purchased a sister 730xd to use as a lab > computer, and am working on the skill sets necessary to migrate > everything to vmware. I have really grown to like kvm and am still > disappointed RedHat/IBM is backing away from Centos. > > I certainly have not been able to get Centos 8 to recognize the SD > card, and have also not been able to get vmware on the sister machine > to recognize either the SD card in the back slot or even when I have it > plugged into a usb converter. The vmware problem is more likely > related to my lack of experience with vmware; this is my first time to > use it. > > Thank you for your help! > > Greg Hi Greg, If your only problem with CentOS 8 is the support end, why not just switch the system to Oracle Linux 8 or another clone or even Red Hat EL with one of the new licenses, if they fit your needs? Moving the whole setup to VMware seems a bit overkill to me as you likely have to learn a completely new system and deal with new problems. Simon ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
On Sun, 7 Mar 2021 at 18:39, Pete Biggs wrote: > On Sun, 2021-03-07 at 11:17 -0600, Gregory P. Ennis wrote: > > Everyone, > > > > We have migrated a platform to a Centos 8 host using kvm guest > > machines > > > > Recently I tried to copy one of the guests to the external SD card > > on > > the back of the Dell R730xd, but I have not been able to get the > > Centos > > 8 host to recognize the SD card. > > > > I can use DRAC interface of the R730xd to see that the SD card is > > being > > recognized and the status of the external SD slot is turned from > > inactive to active when the card is inserted. > > > > I have a nagging feeling at the back of my mind that that slot is > associated with the iDrac system and not the main board. > > In any case doesn't that need a vFlash card not a standard SD/SDHC > card? From Wikipedia: > > I think the SD card on the back of the IDRAC7 systems on the Dell 730xd are similar to this. They are accessible by the IDrac and dell software and are primarily there for emergency install of the hardware from known good media. I believe that vmware has a module which talks to the card so you can install software in vm's from said known good media. --- Simeon, You have anticipated what I am trying to do. I have been using Centos 8 as a host on a 730xd machine, for some Centos 7 guests. With the end of life of Centos 8 only 9 months away I decided to try to migrate everything to vmware. I purchased a sister 730xd to use as a lab computer, and am working on the skill sets necessary to migrate everything to vmware. I have really grown to like kvm and am still disappointed RedHat/IBM is backing away from Centos. I certainly have not been able to get Centos 8 to recognize the SD card, and have also not been able to get vmware on the sister machine to recognize either the SD card in the back slot or even when I have it plugged into a usb converter. The vmware problem is more likely related to my lack of experience with vmware; this is my first time to use it. Thank you for your help! Greg ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
On Sun, 7 Mar 2021 at 18:39, Pete Biggs wrote: > On Sun, 2021-03-07 at 11:17 -0600, Gregory P. Ennis wrote: > > Everyone, > > > > We have migrated a platform to a Centos 8 host using kvm guest machines > > > > Recently I tried to copy one of the guests to the external SD card on > > the back of the Dell R730xd, but I have not been able to get the Centos > > 8 host to recognize the SD card. > > > > I can use DRAC interface of the R730xd to see that the SD card is being > > recognized and the status of the external SD slot is turned from > > inactive to active when the card is inserted. > > > > I have a nagging feeling at the back of my mind that that slot is > associated with the iDrac system and not the main board. > > In any case doesn't that need a vFlash card not a standard SD/SDHC > card? From Wikipedia: > > I think the SD card on the back of the IDRAC7 systems on the Dell 730xd are similar to this. They are accessible by the IDrac and dell software and are primarily there for emergency install of the hardware from known good media. I believe that vmware has a module which talks to the card so you can install software in vm's from said known good media. -- Stephen J Smoogen. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] SHR in top command is zero and major page fault is frequent
Recently, I found that many processes in our server experienced high frequency of major page faults. The disk IO on this server is also very high. I also noticed that when I execute "top" command, for some processes, the value in SHR column became zero. when I restart these processes, the values of SHR became non-zero again. What could be the reason for frequent major page fault? Is there any connection between zero SHR and major page fault? ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] kernel-devel package newer than installed kernel
On Mar 8, 2021, at 07:37, Mauricio Tavares wrote: > > Unfortunately, the latest kernel listed by rpm agrees with uname: > > [raub@testbox ~]$ rpm -qa kernel > kernel-4.18.0-193.el8.x86_64 > kernel-4.18.0-240.10.1.el8_3.x86_64 > [raub@testbox ~]$ It appears as though you don’t have all the latest package updates. Does “dnf upgrade” bring down a new kernel package? If not, do you have some local changes to your dnf config that might prevent kernel updates? Or an alternative CentOS repository that is out of date? -- Jonathan Billings ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] kernel-devel package newer than installed kernel
On Mon, Mar 8, 2021 at 12:30 AM Phil Perry wrote: > > On 08/03/2021 04:11, Mauricio Tavares wrote: > > Running CentOS Linux release 8.3.2011 > > > > According to uname my kernel is 4.18.0-240.10.1.el8_3.x86_64, but when > > I check which version of kernel-devel is available, > > > > yum info kernel-devel > > > > I get that > > > > Source : kernel-4.18.0-240.15.1.el8_3.src.rpm > > > > Why is the version of kernel-devel available for my kernel based on a > > newer kernel? > > uname prints the running kernel - maybe you need to reboot to the latest > kernel. > Thanks for the reply. I rebooted it and uname still reported the same kernel as mentioned above. > Try 'rpm -qa kernel' to see which kernels are actually installed. > Unfortunately, the latest kernel listed by rpm agrees with uname: [raub@testbox ~]$ rpm -qa kernel kernel-4.18.0-193.el8.x86_64 kernel-4.18.0-240.10.1.el8_3.x86_64 [raub@testbox ~]$ > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] R730xd & SD card identfication
> > I am beginning to be persuaded you are right. However, I have seen > some posts about putting vmware either on the SD card or internal usb > stick that made me think the SD card could be addressable. If Dell has > this limited to Dell flash cards instead of a regular SD card that > might explain some of what I am seeing. > You can get an Internal Dual SD Module (IDSDM) addon for those machines - they are different to the iDrac based vFlash card. And yes, you can boot a hypervisor from the internal SD card. Also, apparently, neither the vFlash slot nor the IDSDM are hot- pluggable. P. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
