I installed new CentOS 5.5(X86_64) on my server. My server has 48 G RAM (12*4G) and can be found when starting server. Moreover, I installed dmidecode software to detect the memory. This software can find all the memory. I used command (top, cat /proc/meminfo) to check memory. Both commands can only find 33G RAM. uname -a command output like this: 2.6.18-194.el5xen #1 SMP Fri Apr 2 15:34:40 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
I have a problem with recognising my mobile phone's memory card in Ubuntu 9.10. When I plug the phone in it starts the mass storage mode, but nothing happens in the PC. I suspect that I may have deleted phone's icon from the desktop, and I don't know how to bring it back. Also the memory card doesn't appear anywhere: nor in the Places tab, nor in Media folder.The phone is Samsung U900 Soul.
I have attached usb memory to my Linux server and I want to add it to my /etc/fstab .Can you please let me know how can I recognize it from my"/dev/?" list ?
I am having a problem recognizing the full 24GB memory on a dell PowerEdge R610 system I just purchased. This is the Fedora 11 preview version, uname -a returns this:Linux comp1 2.6.29.3-140.fc11.x86_64 #1 SMP Tue May 12 10:44:27 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
this is the off the shelf box from Dell and it is a quad-core with 24GB memory, but the OS can only recognize about 3GB, here is the free -m
total used free shared buffers cached Mem: 2980 607 2373 0 24 176
the system is otherwise functioning normal. how to get the full 24GB of mem recognized?
I have had a Supermicro X7DCL-3 motherboard based machine, running CentOS 5.2 x86_64, recently upgraded to 5.3.Strangely enough, although I must have installed the 5.2 using DVD disk, the running system does not show the DVD drive. The machine was not used very much so I noticed that only today, after the update. There is no trace of it in 'dmesg', thera are no /dev/cd* and/or /dev/dvd* devices. The IDE controller is IT8213 (as shown by 'lspci'). In 5.2 kernel (2.6.18-92.el5-x86_64) lspci says "unknown device". I have checked the /usr/src/kernels/*/.config files and both kernels (5.2 and 2.6.18-128.el5-x86_64 of 5.3) seam to have the support for that controller added into the kernel:CONFIG_BLK_DEV_IT821X=yAny idea why it is not working? The Supermicro has apparently noticed this also as their OS compatibility chart lists the IDE interface for that motherboard as supported up to RHEL 5.1 but not for 5.2.
I have a copy of the DVD Iso for centos 5.3. I downloaded the updated packages to the Centos directory and then ran the repomanage perl script to remove the old files from the directory. I then ran the createrepo and the new iso image with the script code below.
I am using VMWare to test the build, so I have the cd pointing to the iso image. I get the CentOS to start up find and dandy asking the questions for the interactive boot. It gets thru the stage of checking dependencies and then when it starts to copy down the image to the "harddrive" that is when the problem occurs.
One of the updated files is file-4.17-15.el5_3.1.i386.rpm (file-4.17-15.el5.i386.rpm was removed using repomanage), but the loader is looking for the removed file. I've looked thru any dependencies, but nothing specific for the removed file, all are asking for /usr/bin/file with no specific version numbers. I have run a rpm -test on all the rpms, but haven't been able to look thru that to see if there is a specific request for the version.
I did try this, but it just moved on to the next file. I did not replace the file version, but then it found another problem that was the same as this, the updated file is in the repo, but it is requesting the old version. I looked thru the fileslist and others to see if maybe that was the problem, but they were updated to the new versions.
I just ran into a weird problem with a CentOS 5.5 64-bit server running VirtualBox 3.2.8 (I would run Vmware Server 2.0.2 if not for the well known fact that Vmware doesn't care about its Server line anymore and it doesn't run on CentOS > 5.3 without major splits). I currently have two guests in that VirtualBox setup, a CentOS 5.5 64-bit and a Fedora 13 64-bit. The CentOS 5.5 guest shows less memory available than configured. If, for example, I give the virtual machine 512MB of memory the guest OS only recognizes 380MB. If I give it 768MB it only recognizes 637MB, and so on. I don't have that problem on the Fedora guest - 1024MB configured, 1024MB available.
I had a problem with centos 5 not recognising usb sticks dispite installing and using centos 5 on different computers. This was cured by slotting the stick in imediatly after start up which seems odd but I have seen others having similar problems.
I am having a problem trying to get my UPS (APC BACK-UPS ES 750) to be recognized (via USB) on my new CentOS 5.4 system. I had no trouble a while ago getting it to work on an old Fedora Core 3 system, and I don't think the problem is even with the apcupsd package because at the very least, I expect to see the device appear when I plug in the usb cable and use (from the APCUPSD User Manual):
i have installed centos 5.1 but it won't recognize 2nd nic card (eth1). i was unable to install the driver supplied by the cd. i am using intellinet gigabite pci network card. the network card recognize by centos 5.3 but i need to use centos 5.1. i also tried another intel gigabite adopter but it also won't recognize by centos 5.1.
I have installed the LG BE08LU20 on five Centos servers during the past three months. Two HP ML115, two Dell T110 and mine which is an older Dell Dimension. All except one of the Dell T110 work fine. The BE08LU20 drive is used for 50Gb backups using mondoarchive. On the problem machine which has just been installed from scratch again, it will quite happily mount cd and dvds but not 50Gb BD-RE. I take the same BD-RE disk which it objects to and load it on my identical be08lu20 on a Dell Dimension with Centos 5.5 and it is recognized and allows writing. I swapped my working drive for the problem one but it makes no difference. The 'faulty' drive works perfectly correctly on mine. The OS is Centos 5.5 I have used the same DVD to install three machines with it. Two work including mine, but not the T110. Another customer with T110 also has a be08lu20 and mondoarchive with bd-re disks and theirs worked from the start. They have Centos 5.3 and up-to-date patches, but it should make no difference I've tried both usb and e-sata the result is the same. The centos 5.5 has kernel 2.6.18.194-el5PAE
If I load a bd-re disk in the drive and mount it - this is what I get [root@localhost log]# mount /dev/scd0 /mnt/cdrom mount: you must specify the filesystem type This is the log Aug 25 00:33:17 gilmartin1 kernel: end_request: I/O error, dev sr0, sector 2096896 Aug 25 00:33:17 gilmartin1 kernel: Buffer I/O error on device sr0, logical block 524224
[Code]...
There was another problem with this particular machine. I could install Centos, configure Samba and join the users to the domain without a hiccup. Then in the small hours of the morning (not always the same time) it just locked up, no kbd, no mouse, no display, no disk active, no network. Only solution was switch off and it would come up again quite happily with nothing logged and run without a problem for another 20-24 hours. Dell eventually agreed to replace the motherboard. I installed Centos again from scratch. It's been fine all week. The blu-ray problem has been there from the start, and has NOT been solved by the new motherboard.
my android phone doesn't seem to be recognized by the system and it's file system is vfat how did it occur while i've been using my phone as a storage device it still works yesterday but upon plugging it in the usb port it says "cannot mount volume".....
I just installed CentOS 5.2 on a mini Atom server and it wont recognize the nics. Not sure what kind they are, think they are Intel. (built in)It's the first time this has happened to me. Where do I start to get it to recognize the nics? Normally it works out of the box.
I have a samsung removable hard drive, which have 3 fat32 partitions on it. When I plug into the usb. nothing happened and i just see a sdc was added in /dev/...so, there's nothing wrong with the drive, because i can use it on windows and ubuntu.
I have updated bind using yum on a Centos 5.3 server, after restarting, I have this error now. Error in named configuration: zone localhost/IN: loaded serial 42 /var/named/mydomain.hosts:20: unknown RR type 'SPF' My version of is : bind.x86_64 30:9.3.6-16.P1.el5
The problem seems to be a memory issue. Seems the problem only started happening after the last few updates. I have tested the memory with memtest and both servers passed. There hasn't been any new software put on the servers for over 12 months. Server 1 - 3 gig of memory CentOS 5.2 - Linux version 2.6.18-92.1.18.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Wed Nov 12 09:19:49 EST 2008 Errors in log
I ma porting an application from SUSE 10 Professional 64-bit to CentOS 5.3 x64 version. We have set the /etc/php.ini as in old server and set the maximum memory limit to 5GB (yes! We have ample of memory) for the process.It was working fine in old server but in new server, the Apache log always showed that it failed to allocate more memory for the application.We noticed that the error coming out while the application uses up to 1GB memory.Just wish to ask if the PHP in CentOS 5.3 has any restriction on memory usage?
i have installed kernel-xen to my centos 5.4 server ( with yum install kernel-xen ). My server has got 8192 mb pyschal ram with PAE kernel; but after i installed xen kernel to system, my ram is being 7919664KB....how can i fix this ? i want see 8192MB RAM with xen kernel
I have a home samba server with a 3ware Escalade 8506-8. I have 5 x 500 gig hard drives in a RAID 5 array. Recently, my 8506 died and I need to get a new one. However, I saw a 3ware Escalade 9500S-12 on ebay for about $20.00 dollars more than a replacement 8506-8.
My question is, if I put my drives on the 9500S, will it recognize my existing RAID array? Or will it want to build a new RAID array and format all of my data?Hope I have asked this question clearly, little short on sleep this week.
I have xen kernel on a 5.4_64 though it seems to have always done this regardless of version. When I add a virt the control set shows the total machine memory minus what I just allocated to the new virt. This also shows up in the system monitor as total available ram. Problem arises in deleting and making new virts. The memory never reappears as usable after deleting virts. So now after testing several different setups I'm down to 1.4 gigs showing available on the dom0. What can I do to recover this lost memory? I've searched, read, looked every where I could think of and there just doesn't seem to be any information about deleting virts only adding them.
root@XXXXX:~# uname -a Linux myserver 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:40:24 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux I'm having serious memory leak issues on a server running CentOS. Running 'top' I can't find any proccess with an unusual memory usage. Is there any other way to check what is using this memory? Right now it shows that I have 4.8GB of RAM used, but top shows only few proccesses, one with 4% and lots of 0.0%.
I have a web server with the specs below and my apache server is being a hog using all my RAM 7gigs or 8gigs of ram. When there is a rush of traffic at once my whole server crashes and I have to reboot apache. The way my site is set up I have a tube script and I use the tube script to host videos on my forum I have 1000 videos on the tube script. I brought a bigger server and more ram because of the down time I been having . I am really trying to figure out why its crashing and using so much ram. I installed eAccelerator didn't seem to help with the apache server.
Intel Quad Core Xeon X3430 (4 x 2.40 GHz, 8MB Cache) > 2-bay Supermicro Chassis and Motherboard > 8 GB REG ECC DDR3 (twice your current setup) > 250 GB Enterprise Grade SATA II > 10 TB Bandwidth 1gig Uplink Port > CentOS 64 Bit (Latest Stable)
TOP Command and free -m command screenshots are attached this is with only 160 people online at once
