Re: [CentOS] Latest version of kate editor
On 2/2/2016 12:02 PM, H wrote: > What do people use as a programming editor on CentOS 6? My first > impression of kate was favorable, not only did it support the usual > programming and scripting languages but also markdown which I have I used gedit and Windows' Notepad for a long time until I stumbled across SciTE. I now use SciTE on CentOS 5, CentOS 7, and Windows because it's programmable and cross-platform. I have never actually used it on CentOS 6, though. It doesn't appear to support Markdown out of the box, either, but I think it's possible to add your own language files. The last couple versions won't compile on CentOS 5, but I wasn't affected by any of the bugs they fixed and I'm migrating to 7 anyway. -- -Chris ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 7, NSF, "feature"
In the last month, we've discovered a new, a, "feature" in the version of the version of NFS with CentOS 7: on startup, if it cannot resolve a given host, it dies. It does not continue on up, with all the other hosts it's exporting to, and just log a message. Is there a workaround, or a configuration, to change this "fail on unresolved host" behaviour? mark ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] nfs stuck, don't know what processes to kill
umount -fl /mount/point And configure it after with autofs Sent from my iPhone > On Feb 2, 2016, at 20:00, Phelps, Matthewwrote: > > Try "umount -fl"('eff el') > >> On Tue, Feb 2, 2016 at 1:58 PM, Dave Burns wrote: >> >> My NFS server is up and other clients can access x. One particular client >> can't. I tried to unmount the NFS share: >> >> [root@nfsclient ~]# umount -f /disk/x >> umount2: Device or resource busy >> umount.nfs: /disk/x: device is busy >> umount2: Device or resource busy >> umount.nfs: /disk/x: device is busy >> >> If I use df or lsof to try to figure out what process to kill, they hang. I >> am reluctant to just reboot, as many other users are getting stuff done. >> dmesg doesn't show anything useful. >> >> How to get unstuck? >> >> thanks, >> Dave >> ___ >> CentOS mailing list >> CentOS@centos.org >> https://lists.centos.org/mailman/listinfo/centos > > > > -- > Matt Phelps > System Administrator, Computation Facility > Harvard - Smithsonian Center for Astrophysics > mphe...@cfa.harvard.edu, http://www.cfa.harvard.edu > ___ > 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] nfs stuck, don't know what processes to kill
Dave Burns wrote: > My NFS server is up and other clients can access x. One particular client > can't. I tried to unmount the NFS share: > > [root@nfsclient ~]# umount -f /disk/x > umount2: Device or resource busy > umount.nfs: /disk/x: device is busy > umount2: Device or resource busy > umount.nfs: /disk/x: device is busy > > If I use df or lsof to try to figure out what process to kill, they hang. > I > am reluctant to just reboot, as many other users are getting stuff done. > dmesg doesn't show anything useful. > > How to get unstuck? *IF* I understand what you're saying, on that one client, you're trying to umount the nfs share. Is that the case? IF that is the case... is autofs running? If so, service autofs stop, and you should be able to umount it. mark ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 7, NSF, "feature"
Ricardo J. Barberis wrote: > El Martes 02/02/2016, m.r...@5-cent.us escribió: >> In the last month, we've discovered a new, a, "feature" in the >> version of the version of NFS with CentOS 7: on startup, if it >> cannot resolve a given host, it dies. It does not continue on up, >> with all the other hosts it's exporting to, and just log a message. >> >> Is there a workaround, or a configuration, to change this "fail on >> unresolved host" behaviour? > > Maybe NFS should wait for the network to be up? Good thought, but no - this was an issue where the servers names were changed, or moved - I disremember which. And it came up originally, because we have one server that's accessed all over campus, at other Institutes, and some people leave, and their machines go away, repurposed or surplused, but they're still listed on our exports file. mark ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] In A UEFI World, "rm -rf /" Can Brick Your System
Once upon a time, Frank Coxsaid: > On Tue, 2 Feb 2016 10:18:09 + (UTC) > Tony Mountifield wrote: > > killing the UEFI stuff stops you ever being able to do a re-install on > > that box. Is that correct? > > Apparently so. Just to clarify: this appears to be a problem with some particular buggy UEFI implementations; this is not a universal problem with the UEFI design or anything. It is unclear (just "some MSI boards") which models/revisions/etc. have this particular problem. There have been other isolated UEFI implementation problems before (some Samsung laptops for example, with a particular UEFI version and Linux kernel driver version plus a samsung-laptop driver enabled). This isn't meant to diminish the impact; certainly UEFI is proving to be problematic in ways the BIOS wasn't (although the early days of "IBM compatible BIOS" implementations also had weird issues from time to time). -- Chris Adams ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 7, NSF, "feature"
El Martes 02/02/2016, m.r...@5-cent.us escribió: > In the last month, we've discovered a new, a, "feature" in the version > of the version of NFS with CentOS 7: on startup, if it cannot resolve a > given host, it dies. It does not continue on up, with all the other hosts > it's exporting to, and just log a message. > > Is there a workaround, or a configuration, to change this "fail on > unresolved host" behaviour? > > mark Maybe NFS should wait for the network to be up? I had a similar problem with an nginx binded to a specific IP, it didn't start because the interface wasn't yet up, so I had to make a new unit and put this inside (/etc/systemd/system/nginx.service): .include /usr/lib/systemd/system/nginx.service [Unit] After=network.target remote-fs.target nss-lookup.target network-online.target The After line is the important one, I copied it from /usr/lib/systemd/system/nginx.service and added "network-online.target" at the end. After making your changes, be sure to reenable the service so it takes your new unit, e.g.: # systemctl reenable nginx.service It worked for me, maybe it works for you? Cheers, -- Ricardo J. Barberis Usuario Linux Nº 250625: http://counter.li.org/ Usuario LFS Nº 5121: http://www.linuxfromscratch.org/ Senior SysAdmin / IT Architect - www.DonWeb.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] nfs stuck, don't know what processes to kill
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share: [root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful. How to get unstuck? thanks, Dave ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] nfs stuck, don't know what processes to kill
Try "umount -fl"('eff el') On Tue, Feb 2, 2016 at 1:58 PM, Dave Burnswrote: > My NFS server is up and other clients can access x. One particular client > can't. I tried to unmount the NFS share: > > [root@nfsclient ~]# umount -f /disk/x > umount2: Device or resource busy > umount.nfs: /disk/x: device is busy > umount2: Device or resource busy > umount.nfs: /disk/x: device is busy > > If I use df or lsof to try to figure out what process to kill, they hang. I > am reluctant to just reboot, as many other users are getting stuff done. > dmesg doesn't show anything useful. > > How to get unstuck? > > thanks, > Dave > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos > -- Matt Phelps System Administrator, Computation Facility Harvard - Smithsonian Center for Astrophysics mphe...@cfa.harvard.edu, http://www.cfa.harvard.edu ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Latest version of kate editor
On 02/02/16 12:02, H wrote: > On 02/02/2016 03:50 PM, Lamar Owen wrote: >> On 02/02/2016 09:28 AM, Jonathan Billings wrote: >>> CentOS is not a bleeding-edge distribution that constantly keeps >>> packages up to date with the upstream projects. If you want that, try >>> another distribution like Fedora. >> >> GNOME can get a rebase to a newer version, but KDE can't. this >> from a former KDE user who would love to go back to KDE but refuses to >> deal with the issues older versions have. >> >> This is, of course, an upstream issue and not a CentOS one, and I know >> that so I now use GNOME, even though it would be nice to see >> parity in the allowing of a rebase of KDE like the one for GNOME. >> >> >> >>> There is a 3rd-party repository that might have an upgraded KDE: >>> http://www.trinitydesktop.org/about.php >>> >> >> Trinity Desktop (TDE), is a fork of KDE 3.x, and not updated from >> that. So in ways it is older, yet newer. >> I use Eclipse. There are plug in extensions for pretty near any language you might favor. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] How bad is "rm -rf /" ?
Dear All, Suppose I executed the command rm -rf / on my CentOS 7 box. After it did what it could, how much damage will be done to what I have (or _had_ rather ;-) on my hard drive? I'm going to describe simple experiment which was prompted in another thread. I need to say a few words before I do it, however. First of all, that other thread was about doing the same thing on UEFI machine. This experiment has nothing to do with UEFI, it was done not with the goal to answer that question for UEFI machine. What I did is this: I took two used drives (same manufacturer, same model, same size). Then on some (pre-UEFI) hardware I kick-start installed Development workstation (whith a bunch of scientific software I install for people in our department). I did this install twice, once of each of drives. Then I booted freshly installed system, went to virtual console, logged in as root, and did: cd / rm -rfv / (yes, I decided to add verbose flag to see things flying away). Guess what? My clever CentOS 7 box told me that I am trying to remove everything from root filesystem, and failed (I know, rm is aliased to "rm -i", that still was not why this happened. Clever!). So, being determined to still attempt to remove everything, I executed the command with an extra option: rm -rfv --no-preserve-root / and finally things started flying away, then the box locked with a bunch of rm: cannot remove "/proc/sys/fs...": permission denied OK, looks like I achieved the goal. I let this "obliterated" box sit for another couple of hours like that. Then I did the only thing you can do in this situation: pulled the power cord. After that was done, I had two drives: one subjected to "rm -rf /" and another not. This is not quite clean experiment as one drive was not a clone of another; kickstart strictly speaking does not guarantee the drives are identical. Also, as experiment is not clean, I decided I will not boot system with second drive at all. Before I go to comparison of two drives I need to tell you that I still partition the drives when I install system, and here how the drive is partitioned (as configured in kickstart file): partition number filesystem 1 /boot 2 /usr 3 / 5 /home 6swap 7 /var 8 /tmp 9 /data Now, I mounted each of the drives on different machine, and compared them to see what I still have on the drive I tried to obliterate wit "rm -rf /". Here is what I see: / contains on its top level all what it did (plus one more file: core dump!) My /etc lives on root filesystem, so I looked how damaged that is. On "obliterated" drive: find /media/80caeb82-571a-4afe-b3bf-9bce1a35f49a/etc -type f | wc -l 2280 On intact comparison drive: find /media/e2132f68-01a0-4815-aa38-1180ebcd41dc/etc -type f | wc -l 2272 (a few things did not create on comparison drive which I never booted). In general, all seems intact! I have /usr on separate partition, let's see what happened to /usr: On "obliterated" drive: find /media/39766043-9733-4f76-800f-696e604845ff -type f | wc -l 289498 du -s /media/39766043-9733-4f76-800f-696e604845ff 7438636 /media/39766043-9733-4f76-800f-696e604845ff On intact comparison drive: find /media/a3912c30-bf5f-4788-83f7-70756ef4b4ac -type f | wc -l 289498 du -s /media/a3912c30-bf5f-4788-83f7-70756ef4b4ac 7438640 /media/a3912c30-bf5f-4788-83f7-70756ef4b4ac Well, all seems intact again. OK, now: how about stuff that in / comes alphabetically before /dev? First, symlink /bin (pointing to /usr/bin) stayed intact! This is not what I expected, but I'm sure some clever person will explain that. Second, I have two different partitions mounted as /boot and /data. Both of them are gone (though their mount points stayed intact). By no means I am considering myself an expert, but what I see is pretty much what I expected. Namely, the kernel talks to hard drive via block device (or raw device whenever applicable). Therefore, once resembling device is deleted from /dev, there will be no more changes to the content on hard drive platters. So, all in all "rm -rf /" is much less disatrous than it sounds. It only obliterates stuff that every sysadmin can re-create (like /boot or /bin bacl then when it was not symlink to /usr/bin). So, happy "rm -rf /"-ing everybody! I know there are many experts on this list (from whom I constantly learn something!). They probably give much better explanation of what I observed in the experiment I described. Cheers, Valeri Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Measuring memory bandwidth utilization
I'd like to know what the cause of a particular DB server's slowdown might be. We've ruled out IOPs for the disks (~ 20%) and raw CPU load (top shows perhaps 1/2 of cores busy, but the system slows to a crawl. We're suspecting that we're simply running out of memory bandwidth but have no way to confirm this suspicion. Is there a way to test for this? Think: iostat but for memory bandwidth instead of disk IO. So far, searching has found intel-cmt-cat-master which isn't supported on our CPU and oprofile which *sounds* like it does what I want from their website but I can't seem to get output that, in any way, tells me what the bandwidth usage is. Any idea? ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Measuring memory bandwidth utilization
On 2/2/2016 5:34 PM, Benjamin Smith wrote: I'd like to know what the cause of a particular DB server's slowdown might be. We've ruled out IOPs for the disks (~ 20%) and raw CPU load (top shows perhaps 1/2 of cores busy, but the system slows to a crawl. We're suspecting that we're simply running out of memory bandwidth but have no way to confirm this suspicion. Is there a way to test for this? Think: iostat but for memory bandwidth instead of disk IO. memory bandwidth would show up as CPU busy, there's no distinction. 50% of your cores 100% busy, how many cores and how many waiting database tasks are there? typically with most database servers, one user connection == one core at a time. so if you have 16 cores, and only 8 busy/active database connections, that will tie up those 8 cores and leave the other 8 free.now the 8 processes will probably get bounced around between the cores, so it could end up looking like all 16 cores are 50% busy averaged over some sample rate, but thats the same net difference.. -- john r pierce, recycling bits in santa cruz ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Re: Latest version of kate editor
On Tue, 2 Feb 2016 18:02, H wrote: On 02/02/2016 03:50 PM, Lamar Owen wrote: On 02/02/2016 09:28 AM, Jonathan Billings wrote: > CentOS is not a bleeding-edge distribution that constantly keeps > packages up to date with the upstream projects. If you want that, try > another distribution like Fedora. GNOME can get a rebase to a newer version, but KDE can't. this from a former KDE user who would love to go back to KDE but refuses to deal with the issues older versions have. This is, of course, an upstream issue and not a CentOS one, and I know that so I now use GNOME, even though it would be nice to see parity in the allowing of a rebase of KDE like the one for GNOME. > There is a 3rd-party repository that might have an upgraded KDE: > http: //www.trinitydesktop.org/about.php > Trinity Desktop (TDE), is a fork of KDE 3.x, and not updated from that. So in ways it is older, yet newer. What do people use as a programming editor on CentOS 6? My first impression of kate was favorable, not only did it support the usual programming and scripting languages but also markdown which I have recently discovered... Well, KDE has its own trouble, even upstream, and for RedHat / Fedora packagers KDE seems a clear second or third choice to work on. The Gnome upgrade from Centos 7.1 to 7.2 was "urgs" and has driven me to switch to XFCE even @work, where I had to ask the sys-admins for allowance beforehand. vim / gvim / jedit Vim and its graphical frontend gvim are in use for nearly all my tasks as text-editors. A special place in my heart has (g)vimdiff which is a great help im my daily work (shell-scripts, php, css, html, js, and markdown make most the volume) The availability of a very powerfull text editor that can be worked with in a terminal the same whether local or remote (via ssh) gives a concistency that other editors lack, or, in the case of emacs, are not my taste at all. Jedit is java based, and for me in use where projects span bejond a single Operating System (Linux, Solaris, Windows and MacOS mostly). - Yamaban ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] I am not understanding the size of the iso
Yep, This is true, If I look at Fedora Gnome for example, which also ships all these(browser,libre, gnome etc), the final DVD version is just about 1.2 GB. That is what surprises me. On Wednesday 03 February 2016 08:52 AM, Peter wrote: > On 03/02/16 16:15, Ramaseshan S wrote: >> While the minimal version is just 700M, what makes the minimal along with a >> GUI about 4.3 GB. > All the extra packages, libs, etc that are needed to support the GUI, > plus the extra apps that are available to run in the GUI (such as > LibreOffice, FireFox, etc). > >> Isint it too huge for an OS ? > u, no? > > > Peter > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos -- Cheers -- S.Ramaseshan Engineer Fractalio Data Pvt Ltd email : ramases...@fractalio.com Web : www.fractalio.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Latest version of kate editor
On Mon, Feb 01, 2016 at 01:22:44PM -0500, H wrote: > I have installed the kate editor on Centos 6.7 but it seems to be a > very old version, 3.3.4, installed as part of kdesdk. On Centos 7 I > can simply run 'yum install kate' but, alas, not on Centos 6. > > What is the recommended way of updating kate on Centos 6? If you're fully up to date with 'yum', then that's the most recent version of 'kate' you are going to get from CentOS. CentOS is not a bleeding-edge distribution that constantly keeps packages up to date with the upstream projects. If you want that, try another distribution like Fedora. The version of KDE in CentOS6 (which kate appears to be a part of) is unlikely to get upgraded to the version in CentOS7. There is a 3rd-party repository that might have an upgraded KDE: http://www.trinitydesktop.org/about.php (I found this on the list of 3rd party repos here: https://wiki.centos.org/AdditionalResources/Repositories -- Jonathan Billings___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-docs] Wiki Update - Aide Link
Thanks! On 02/02/2016 08:40 AM, Manuel Wolfshant wrote: > On 02/02/2016 04:27 PM, Mike Thompson wrote: >> Hello All, >> >> My username is MikeThompson >> >> The link to configure Aide at the bottom of this page: >> https://wiki.centos.org/HowTos/OS_Protection >> >> Is dead, and says its dead, however, the old link to >> http://www.bofh-hunter.com/2008/04/10/centos-5-and-aide/ now redirects >> to a malicious website. >> >> One of my less than savvy users got his windows machine infected there >> last night. I'm wondering if it makes sense to change the link to point >> to one of the following guides which are very decent: >> >> http://www.server-world.info/en/note?os=CentOS_6=aide >> http://www.server-world.info/en/note?os=CentOS_7=aide >> https://highon.coffee/blog/security-harden-centos-7/ >> >> Would be happy to make the change, but hopefully the malicious URL can >> be taken down. >> > I've updated the page, > > Manuel > ___ > CentOS-docs mailing list > CentOS-docs@centos.org > https://lists.centos.org/mailman/listinfo/centos-docs ___ CentOS-docs mailing list CentOS-docs@centos.org https://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] Wiki Update - Aide Link
On 02/02/2016 04:27 PM, Mike Thompson wrote: Hello All, My username is MikeThompson The link to configure Aide at the bottom of this page: https://wiki.centos.org/HowTos/OS_Protection Is dead, and says its dead, however, the old link to http://www.bofh-hunter.com/2008/04/10/centos-5-and-aide/ now redirects to a malicious website. One of my less than savvy users got his windows machine infected there last night. I'm wondering if it makes sense to change the link to point to one of the following guides which are very decent: http://www.server-world.info/en/note?os=CentOS_6=aide http://www.server-world.info/en/note?os=CentOS_7=aide https://highon.coffee/blog/security-harden-centos-7/ Would be happy to make the change, but hopefully the malicious URL can be taken down. I've updated the page, Manuel ___ CentOS-docs mailing list CentOS-docs@centos.org https://lists.centos.org/mailman/listinfo/centos-docs
[CentOS-docs] Wiki Update - Aide Link
Hello All, My username is MikeThompson The link to configure Aide at the bottom of this page: https://wiki.centos.org/HowTos/OS_Protection Is dead, and says its dead, however, the old link to http://www.bofh-hunter.com/2008/04/10/centos-5-and-aide/ now redirects to a malicious website. One of my less than savvy users got his windows machine infected there last night. I'm wondering if it makes sense to change the link to point to one of the following guides which are very decent: http://www.server-world.info/en/note?os=CentOS_6=aide http://www.server-world.info/en/note?os=CentOS_7=aide https://highon.coffee/blog/security-harden-centos-7/ Would be happy to make the change, but hopefully the malicious URL can be taken down. Many thanks! Mike ___ CentOS-docs mailing list CentOS-docs@centos.org https://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-virt] CentOS 6 Virt SIG Xen 4.6 packages available in centos-virt-xen-testing
On 01/14/2016 06:57 PM, George Dunlap wrote: As mentioned yesterday, Xen 4.6 packages are now available for testing. These also include an update to libvirt 1.3.0, in line with what's available for CentOS 7. Please test, particularly the upgrade if you can, and report any problems here. To upgrade: yum update --enablerepo=centos-virt-xen-testing To install from scratch: * Install centos-release-xen from centos-extras yum install centos-release-xen * Update to get the new kernel: yum update * Install the Xen packages from the centos-virt-xen-testing repo: yum install --enablerepo=centos-virt-xen-testing xen Keep in mind that there is still a bug in the upstream CentOS new-kernel script which for some people consistently fails to add an "initird" line to the Xen boot stanza. Check /boot/grub/grub.conf; the Xen stanza should look something like this: title CentOS (3.18.21-17.el6.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all module /vmlinuz-3.18.21-17.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet module /initramfs-3.18.21-17.el6.x86_64.img -George ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt Hello I've attempted to upgrade today to xen 4.6 ( because of something which seems to be a reincarnation of http://lists.xen.org/archives/html/xen-devel/2014-01/msg02259.html ) and I noticed that the new xen-runtime package tries to bring in a whole bunch of other packages: Installing for dependencies: atk x86_64 1.30.0-1.el6 base 195 k avahi-libs x86_64 0.6.25-15.el6 base 55 k cairo x86_64 1.8.8-6.el6_6 base 309 k cups-libs x86_64 1:1.4.2-72.el6 base 321 k fontconfig x86_64 2.8.0-5.el6 base 186 k freetype x86_64 2.3.11-15.el6_6.1 base 361 k gdk-pixbuf2 x86_64 2.24.1-6.el6_7 updates 501 k gtk2 x86_64 2.24.23-6.el6 base 3.2 M hicolor-icon-theme noarch 0.11-1.1.el6 base 40 k jasper-libs x86_64 1.900.1-16.el6_6.3 base 137 k libXcomposite x86_64 0.4.3-4.el6 base 20 k libXcursor x86_64 1.1.14-2.1.el6 base 28 k libXft x86_64 2.3.1-2.el6 base 55 k libXi x86_64 1.7.2-2.2.el6 base 37 k libXinerama x86_64 1.1.3-2.1.el6 base 13 k libXrandr x86_64 1.4.1-2.1.el6 base 23 k libXrender x86_64 0.9.8-2.1.el6 base 24 k libthai x86_64 0.1.12-3.el6 base 183 k libtiff x86_64 3.9.4-10.el6_5 base 343 k pango x86_64 1.28.1-10.el6 base 351 k Is this really needed ? wolfy ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Latest version of kate editor
On 02/02/2016 09:28 AM, Jonathan Billings wrote: CentOS is not a bleeding-edge distribution that constantly keeps packages up to date with the upstream projects. If you want that, try another distribution like Fedora. GNOME can get a rebase to a newer version, but KDE can't. this from a former KDE user who would love to go back to KDE but refuses to deal with the issues older versions have. This is, of course, an upstream issue and not a CentOS one, and I know that so I now use GNOME, even though it would be nice to see parity in the allowing of a rebase of KDE like the one for GNOME. There is a 3rd-party repository that might have an upgraded KDE: http://www.trinitydesktop.org/about.php Trinity Desktop (TDE), is a fork of KDE 3.x, and not updated from that. So in ways it is older, yet newer. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] In A UEFI World, "rm -rf /" Can Brick Your System
In article <75d47fdc6a99f24f87a6465baf326d5018c50...@columba02.user.uu.se>, Sorin Srbuwrote: > > -Original Message- > > From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On > > Behalf Of m.r...@5-cent.us > > Sent: den 1 februari 2016 20:34 > > To: CentOS > > Subject: [CentOS] In A UEFI World, "rm -rf /" Can Brick Your System > > > > As a public service announcement, recursively removing all of your files > > from / is no longer recommended. > > I'm not following, has it ever been recommended (on a working system)?? > > Or is this one of those ironic posts? 8-) I think the point is that hitherto, if you kill a system with "rm -rf /", you can still do a re-installation from scratch. If I understand correctly what people are saying, killing the UEFI stuff stops you ever being able to do a re-install on that box. Is that correct? Is there no way to do a factory reset of the BIOS? Cheers Tony -- Tony Mountifield Work: t...@softins.co.uk - http://www.softins.co.uk Play: t...@mountifield.org - http://tony.mountifield.org ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] When will CentOS 7.1 become available as an AWS AMI?
On 01/28/2016 07:54 AM, Peter Weissbrod wrote: > I am in need of some AWS instances of this version. > > > > There are “community” instances of 7.1 but I would strongly prefer an > official release from CentOS team over trusting my base image to an > unknown publisher. > > Is there any plan/projection of when CentOS will publish 7.1 to the AWS > marketplace? https://aws.amazon.com/marketplace/seller-profile?id=16cb8b03-256e-4dde-8f34-1b0f377efe89 CentOS 7 is the release. There are point in time 'install collections', like 7 (1406) (based on RHEL 7.0) .. 7 (1503) (based on RHEL 7.1), 7 (1511) (based on RHEL 7.2). But these point releases, based on a point in time, are just a picture of CentOS 7 at that exact point in time. The only way we recommend CentOS is all latest updates installed. And no matter what version you install, a yum update takes you to that version. That is why we have only one image listed. A base 7.1 install would have several Critical security issues, and updating to fix those issues brings you to 7.2. signature.asc Description: OpenPGP digital signature ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] virtio not installing correctly
I have converted a physical machine to kvm, following instructions on the proxmox wiki. So far so good. Now I'm attempting to convert the vm from ide to virtio following the instructions here, http://www.linux-kvm.org/page/Boot_from_virtio_block_device, with virtio-win-stable from Fedora. The guest is running Windows XP. When the new hardware wizard popped up finding the RedHat VirtIO SCSI controller, I pointed it to the viostor/xp directory on the iso. It appears as if all files have been copied, viostor.sys to C:\Windows\system32\DRIVERS, the green progress bar goes all the way to the right, but it's been sitting there over night with no further progress. There is a vioscsi directory on the iso, but it contains no drivers for XP. >From a previous attempt, I know that if I reboot the vm now and try to enter >safe mode, it will hang after loading the agp driver. Host OS is CentOS 6.7. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Latest version of kate editor
On 02/02/2016 03:50 PM, Lamar Owen wrote: On 02/02/2016 09:28 AM, Jonathan Billings wrote: CentOS is not a bleeding-edge distribution that constantly keeps packages up to date with the upstream projects. If you want that, try another distribution like Fedora. GNOME can get a rebase to a newer version, but KDE can't. this from a former KDE user who would love to go back to KDE but refuses to deal with the issues older versions have. This is, of course, an upstream issue and not a CentOS one, and I know that so I now use GNOME, even though it would be nice to see parity in the allowing of a rebase of KDE like the one for GNOME. There is a 3rd-party repository that might have an upgraded KDE: http://www.trinitydesktop.org/about.php Trinity Desktop (TDE), is a fork of KDE 3.x, and not updated from that. So in ways it is older, yet newer. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos What do people use as a programming editor on CentOS 6? My first impression of kate was favorable, not only did it support the usual programming and scripting languages but also markdown which I have recently discovered... ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NICs order
On Mon, Feb 1, 2016 at 11:34 AM, Chris Adamswrote: > > That's only necessary for things that are initialized in the initrd. > Unless you are using network boot, the initrd won't have any of the > network initialization, so rebuilding it is not necessary for changing > network-related config (including udev rules). Thanks for clarification. I'd noticed that dracut will specifically include those files, but haven't seen docs about when or how it's used. Given a couple of users who said things didn't work for them, I thought rebuilding was the safest advice. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] virtio not installing correctly
isdtor writes: > > > The root certificates were updated since XP went out of support and > > that may be the issue. I would look for any entries on how people have > > fixed this in other cases. > > If that was the problem, driver installation wouldn't even start. But it > does, it just hangs towards the end. I was able to beat it into submission with virtio-win-0.1.112. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] CentOS 6 Virt SIG Xen 4.6 packages available in centos-virt-xen-testing
On Tue, Feb 2, 2016 at 2:47 PM, Manuel Wolfshantwrote: > On 01/14/2016 06:57 PM, George Dunlap wrote: >> >> As mentioned yesterday, Xen 4.6 packages are now available for >> testing. These also include an update to libvirt 1.3.0, in line with >> what's available for CentOS 7. Please test, particularly the upgrade >> if you can, and report any problems here. >> >> To upgrade: >> >> yum update --enablerepo=centos-virt-xen-testing >> >> To install from scratch: >> >> * Install centos-release-xen from centos-extras >> >> yum install centos-release-xen >> >> * Update to get the new kernel: >> >> yum update >> >> * Install the Xen packages from the centos-virt-xen-testing repo: >> >> yum install --enablerepo=centos-virt-xen-testing xen >> >> Keep in mind that there is still a bug in the upstream CentOS >> new-kernel script which for some people consistently fails to add an >> "initird" line to the Xen boot stanza. Check /boot/grub/grub.conf; >> the Xen stanza should look something like this: >> >> title CentOS (3.18.21-17.el6.x86_64) >> root (hd0,0) >> kernel /xen.gz dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 >> console=com1,tty loglvl=all guest_loglvl=all >> module /vmlinuz-3.18.21-17.el6.x86_64 ro >> root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD >> rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto >> rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb >> quiet >> module /initramfs-3.18.21-17.el6.x86_64.img >> >> >> -George >> ___ >> CentOS-virt mailing list >> CentOS-virt@centos.org >> https://lists.centos.org/mailman/listinfo/centos-virt > > Hello > > I've attempted to upgrade today to xen 4.6 ( because of something which > seems to be a reincarnation of > http://lists.xen.org/archives/html/xen-devel/2014-01/msg02259.html ) and I > noticed that the new xen-runtime package tries to bring in a whole bunch of > other packages: Those kinds of dependencies are automatically generated by rpmbuild based on the linkages of the actual libraries. I agree it would be nice to minimize the dependencies; but that would take someone sitting down and figuring out which features / components / libraries / whatever were causing the dependencies, and either disabling them or moving them to a separate package. I don't have time to do that at the moment; but I would be happy to help someone else do so, and review pull requests to the xen package repos at https://github.com/CentOS-virt7/xen. -George ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Latest version of kate editor
On 02/01/2016 08:20 PM, Yamaban wrote: On Mon, 1 Feb 2016 19:22, Hwrote: I have installed the kate editor on Centos 6.7 but it seems to be a very old version, 3.3.4, installed as part of kdesdk. On Centos 7 I can simply run 'yum install kate' but, alas, not on Centos 6. What is the recommended way of updating kate on Centos 6? Thank you. First you find out from wich package (rpm) your kate is. either you try to as yum: "yum search kate", or you do the full monty: locate the binary "type kate", usually /usr/bin/kate, then you ask rpm from which package this file comes: "rpm -qf /usr/bin/kate" take the main package name (the part before the version numbers) and feed it to yum: yum update [kate-package-name] YMMV, depening on what repos you have enabled or not. You can search most of what is available via pkgs.org, for kate, for example http://pkgs.org/search/kate then select "Centos 6" (maybe you have to scroll down for that) The EPEL repo seems to have version 0.3.8 of libkate at least. Have a nice week. - Yamaban ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos I do have an old version installed and only very old versions seem to be available for CentOS, the current version of kate seems to be 15.12.1. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] virtio not installing correctly
Hi, I did many physical (Windows) to virtual (kvm) conversions before. The instructions in general are good here: http://www.linux-kvm.org/page/Boot_from_virtio_block_device , so yes, you must add a dummy ("fake") 2nd disk drive to the guest first, boot up the guest, install the virtio drivers to that 2nd virtual HDD and after that you can shutdown the guest, remove the dummy drive from the guest's config and switch the original 1st disk's setting from IDE to virtio. The whole reason for adding a 2nd dummy disk is the ability to install the virtio driver inside Windows while it is booted up from an IDE disk. I ran into one gotcha recently when I was converting an old Windows 7 image to KVM though: the virtio drivers just did not work in Windows at first, because Windows could not verify the signatures of the virtio drivers and it was unwilling to use them. I had to fully update those old Windows 7 systems via the Windows Update service. After that Windows 7 was able to recognize the signatures on the latest virtio drivers and started to use them. I believe that in an old Windows which was not updated for years, the root certificates are outdated and virtio drivers cannot be verified. I hope this helps. Z. On 2/2/2016 11:39 AM, isdtor wrote: I have converted a physical machine to kvm, following instructions on the proxmox wiki. So far so good. Now I'm attempting to convert the vm from ide to virtio following the instructions here, http://www.linux-kvm.org/page/Boot_from_virtio_block_device, with virtio-win-stable from Fedora. The guest is running Windows XP. When the new hardware wizard popped up finding the RedHat VirtIO SCSI controller, I pointed it to the viostor/xp directory on the iso. It appears as if all files have been copied, viostor.sys to C:\Windows\system32\DRIVERS, the green progress bar goes all the way to the right, but it's been sitting there over night with no further progress. There is a vioscsi directory on the iso, but it contains no drivers for XP. >From a previous attempt, I know that if I reboot the vm now and try to enter safe mode, it will hang after loading the agp driver. Host OS is CentOS 6.7. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] virtio not installing correctly
Zoltan Frombach writes: > Hi, > > I did many physical (Windows) to virtual (kvm) conversions before. The > instructions in general are good here: > http://www.linux-kvm.org/page/Boot_from_virtio_block_device , so yes, you > must add a dummy ("fake") 2nd disk drive to the guest first, boot up the > guest, install the virtio drivers to that 2nd virtual HDD and after that you > can shutdown the guest, remove the dummy drive from the guest's config and > switch the original 1st disk's setting from IDE to virtio. The whole reason > for adding a 2nd dummy disk is the ability to install the virtio driver > inside Windows while it is booted up from an IDE disk. Yes, I understand the process and am following it. But XP is throwing a spanner in the works here by not completing the viostor installation process. Should I maybe try with latest rather than stable (.112 vs. .102)? ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Latest version of kate editor
On 02/02/2016 12:56 AM, Mark LaPierre wrote: On 02/01/16 14:20, Yamaban wrote: On Mon, 1 Feb 2016 19:22, Hwrote: I have installed the kate editor on Centos 6.7 but it seems to be a very old version, 3.3.4, installed as part of kdesdk. On Centos 7 I can simply run 'yum install kate' but, alas, not on Centos 6. What is the recommended way of updating kate on Centos 6? Thank you. First you find out from wich package (rpm) your kate is. either you try to as yum: "yum search kate", or you do the full monty: locate the binary "type kate", usually /usr/bin/kate, then you ask rpm from which package this file comes: "rpm -qf /usr/bin/kate" take the main package name (the part before the version numbers) and feed it to yum: yum update [kate-package-name] YMMV, depening on what repos you have enabled or not. You can search most of what is available via pkgs.org, for kate, for example http://pkgs.org/search/kate then select "Centos 6" (maybe you have to scroll down for that) The EPEL repo seems to have version 0.3.8 of libkate at least. Have a nice week. - Yamaban ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos yum install kdesdk-4.3.4-9.el6.x86_64 That is the version I installed previously and which contains a very old version of kate. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] virtio not installing correctly
On 2/2/2016 12:05 PM, isdtor wrote: Zoltan Frombach writes: Hi, I did many physical (Windows) to virtual (kvm) conversions before. The instructions in general are good here: http://www.linux-kvm.org/page/Boot_from_virtio_block_device , so yes, you must add a dummy ("fake") 2nd disk drive to the guest first, boot up the guest, install the virtio drivers to that 2nd virtual HDD and after that you can shutdown the guest, remove the dummy drive from the guest's config and switch the original 1st disk's setting from IDE to virtio. The whole reason for adding a 2nd dummy disk is the ability to install the virtio driver inside Windows while it is booted up from an IDE disk. Yes, I understand the process and am following it. But XP is throwing a spanner in the works here by not completing the viostor installation process. Should I maybe try with latest rather than stable (.112 vs. .102)? I'm not sure if that is going to make any difference. I use the latest myself ( .112 ) Are you sure that the spinning wheel is not caused by the driver driver signature verification? Maybe try to upgrade the "root certificates" via Windows Updates first. Or try to disable driver signature checking temporarily: https://support.hidemyass.com/hc/en-us/articles/202723596-How-to-disable-Driver-Signing-check-on-Windows I definitely had this driver signature problem with an old Windows 7 a couple of weeks ago. In Windows 7, I didn't get a forever spinning wheel, instead it popped up an error message. Zoltan ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] virtio not installing correctly
> I'm not sure if that is going to make any difference. I use the latest > myself ( .112 ) > > Are you sure that the spinning wheel is not caused by the driver driver > signature verification? Maybe try to upgrade the "root certificates" via It's XP, not 7. Driver installation commences (pages flying from folder to folder animation), and the machine had all the latest updates installed by the time XP went out of support. I think I will try the latest virtio. Pretty much stuck right now. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] virtio not installing correctly
On 2 February 2016 at 05:16, isdtorwrote: > >> I'm not sure if that is going to make any difference. I use the latest >> myself ( .112 ) >> >> Are you sure that the spinning wheel is not caused by the driver driver >> signature verification? Maybe try to upgrade the "root certificates" via > > It's XP, not 7. Driver installation commences (pages flying from folder to > folder animation), and the machine had all the latest updates installed by > the time XP went out of support. The root certificates were updated since XP went out of support and that may be the issue. I would look for any entries on how people have fixed this in other cases. > > I think I will try the latest virtio. Pretty much stuck right now. > > ___ > CentOS-virt mailing list > CentOS-virt@centos.org > https://lists.centos.org/mailman/listinfo/centos-virt -- Stephen J Smoogen. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Latest version of kate editor
On Tue, 2 Feb 2016 18:02:40 +0100 H wrote: > What do people use as a programming editor on CentOS 6? I personally use Geany and/or vim, depending on what I'm doing and how I'm doing it. You can find pre-compiled rpms for the latest version of geany for Centos 6 and 7 on my website if you want them. (The Centos 6 i386 rpm is two versions behind but the x86_64 version is up to date. I don't have easy access to an i386 Centos 6 machine any more to build an i386 rpm, but you can easily do it yourself by compiling the src rpm that's there if you need it.) -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] In A UEFI World, "rm -rf /" Can Brick Your System
On Tue, 2 Feb 2016 10:18:09 + (UTC) Tony Mountifield wrote: > killing the UEFI stuff stops you ever being able to do a re-install on that > box. Is that correct? Apparently so. > Is there no way to do a factory reset of the BIOS? Apparently not. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Latest version of kate editor
On Tue, Feb 02, 2016 at 06:02:40PM +0100, H wrote: > What do people use as a programming editor on CentOS 6? My first impression > of kate was favorable, not only did it support the usual programming and > scripting languages but also markdown which I have recently discovered... I don't want to spur an editor war, but I use emacs for programming and vim for quick edits, particularly on remote systems or inside a tmux shell. -- Jonathan Billings___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] I am not understanding the size of the iso
redhat (centos) ships lot's of stuff. you don't really need to install *everything* unless you have very specific needs.. 2016-02-03 8:15 GMT+02:00 Ramaseshan: > Yep, This is true, > If I look at Fedora Gnome for example, which also ships all > these(browser,libre, gnome etc), the final DVD version is just about 1.2 > GB. > That is what surprises me. > > > On Wednesday 03 February 2016 08:52 AM, Peter wrote: > > On 03/02/16 16:15, Ramaseshan S wrote: > >> While the minimal version is just 700M, what makes the minimal along > with a > >> GUI about 4.3 GB. > > All the extra packages, libs, etc that are needed to support the GUI, > > plus the extra apps that are available to run in the GUI (such as > > LibreOffice, FireFox, etc). > > > >> Isint it too huge for an OS ? > > u, no? > > > > > > Peter > > ___ > > CentOS mailing list > > CentOS@centos.org > > https://lists.centos.org/mailman/listinfo/centos > > -- > Cheers > -- > S.Ramaseshan > Engineer > Fractalio Data Pvt Ltd > email : ramases...@fractalio.com > Web : www.fractalio.com > > ___ > 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] I am not understanding the size of the iso
On 2/2/2016 10:29 PM, Eero Volotinen wrote: redhat (centos) ships lot's of stuff. you don't really need to install *everything* unless you have very specific needs.. I pretty much always install the 'minimal' ISO then install the specific packages I need with yum. lots of reasons, not the least, yum updates run faster when it doesn't have to apply updates to 1000s of packages you're never using. -- john r pierce, recycling bits in santa cruz ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] I am not understanding the size of the iso
On 03/02/16 16:15, Ramaseshan S wrote: > While the minimal version is just 700M, what makes the minimal along with a > GUI about 4.3 GB. All the extra packages, libs, etc that are needed to support the GUI, plus the extra apps that are available to run in the GUI (such as LibreOffice, FireFox, etc). > Isint it too huge for an OS ? u, no? Peter ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] I am not understanding the size of the iso
On 02/02/16 10:15 PM, Ramaseshan S wrote: > I suppose, CentOS 7 ships with DVD and minimal version. > > While the minimal version is just 700M, what makes the minimal along with a > GUI about 4.3 GB. > > Isint it too huge for an OS ? Remember that it is based on upstream. Anyway, there is a LOT of available software that various users might want, so that is where the space comes from. Minimal is just that; the minimum needed to get a working install. -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How bad is "rm -rf /" ?
On 02/02/2016 04:57 PM, Valeri Galtsev wrote: Suppose I executed the command rm -rf / on my CentOS 7 box. After it did what it could, how much damage will be done to what I have (or _had_ rather ;-) on my hard drive? In your experiment, rm processed /boot and /data first, and then /proc, where it hung removing one file. There are two important details to consider. First, that behavior doesn't appear to be standard. If I run "rm -rf /proc" on other kernels, rm doesn't hang. On systems running those kernels, rm will remove all of the files in the filesystem hierarchy. Second, on systems running that kernel, no more data was removed because readdir('/') returned /proc before the directories that rm didn't process. and finally things started flying away, then the box locked with a bunch of rm: cannot remove "/proc/sys/fs...": permission denied The box did not "lock". Press Ctrl+c on the terminal, and rm will exit. What happened is simply that rm tried to unlink a file in /proc, and the syscall didn't return. I'm not sure why that happens, but it doesn't appear to be a feature. OK, now: how about stuff that in / comes alphabetically before /dev? As I told you before, rm doesn't process directory trees in alphabetical order. First, symlink /bin (pointing to /usr/bin) stayed intact! This is not what I expected, but I'm sure some clever person will explain that. I did, in the previous thread. Second, I have two different partitions mounted as /boot and /data. Both of them are gone (though their mount points stayed intact). Directory entry order is in unpredictable. It's not possible to unlink a directory where a filesystem is mounted, which is why the mount point is intact, but its content is gone. By no means I am considering myself an expert, but what I see is pretty much what I expected. Namely, the kernel talks to hard drive via block device (or raw device whenever applicable). That is incorrect, and a much simpler test can verify that. First, rm -rf /dev/*, then remove any file, or write any file. Reboot. Your changes will have been saved, demonstrating that /dev is not required after a filesystem is mounted. Once you've completed that experiment, you can simulate the effect of rm -rf on different kernels by unmounting /proc and then issuing "rm -rfv --no-preserve-root /". When it completes, your filesystem will be empty except for the handful of directories that are used for mount points. Therefore, once resembling device is deleted from /dev, there will be no more changes to the content on hard drive platters. So, all in all "rm -rf /" is much less disatrous than it sounds. It only obliterates stuff that every sysadmin can re-create (like /boot or /bin bacl then when it was not symlink to /usr/bin). So, happy "rm -rf /"-ing everybody! No. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Measuring memory bandwidth utilization
On 02/02/2016 05:34 PM, Benjamin Smith wrote: We've ruled out IOPs for the disks (~ 20%) How did you measure that? What filesystem are you using? What is the disk / array configuration? Which database? If you run "iostat -x 2" what does a representative summary look like? and raw CPU load (top shows perhaps 1/2 of cores busy, but the system slows to a crawl. Define "busy"? ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Measuring memory bandwidth utilization
On Tue, 2 Feb 2016 at 20:34 -, Benjamin Smith wrote: > Any idea? Wild guessing...How old a system? ~5 year old Nehalem? If so try: echo 0 > /proc/sys/vm/zone_reclaim_mode For some memory performance diagnosing try 'sar': sar -B 10 There are lots of other sar options which might be useful. Stuart -- I've never been lost; I was once bewildered for three days, but never lost! -- Daniel Boone ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] I am not understanding the size of the iso
I suppose, CentOS 7 ships with DVD and minimal version. While the minimal version is just 700M, what makes the minimal along with a GUI about 4.3 GB. Isint it too huge for an OS ? -- Cheers -- S.Ramaseshan Engineer fractalio.com ramases...@fractalio.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] virtio not installing correctly
> The root certificates were updated since XP went out of support and > that may be the issue. I would look for any entries on how people have > fixed this in other cases. If that was the problem, driver installation wouldn't even start. But it does, it just hangs towards the end. ___ CentOS-virt mailing list CentOS-virt@centos.org https://lists.centos.org/mailman/listinfo/centos-virt