CentOS 5 :: What Size LVM Volume To Hold A 32GB File
Apr 7, 2011
How big should an LVM volume be to hold a single 32GB file? I thought 33GB would be enough, but apparently not. A volume has run out of space. There are 2 identical volumes holding identical sized files (kvm virtual hard drives in raw format). One (ic030) is showing zero free space and one is showing 97% full. I guess the discrepancy is caused by journalling, directory structure information etc. Possibly also sparseness. How do I calculate the worst-case maximum required LVM volume size? i.e. assuming no sprseness and maximum journal size etc. Here's some info from the file system. (I have removed other volumes form the listings.) The volumes are formatted with ext3.
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Jan 19, 2011
is lvresize with --resizefs options re-size the Logical Volume and then re-size the file system? i mean we don't need to use resize2fs?I looked at man pages but it doesn't explain this option.
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Jun 26, 2011
I have centos 5 virtual server running on ESXi (vsphere 4.1).i have to increase disk space. I increased the size of the virtual machine in Vcenter.But i allready have 4 primary partitions. when i run fdisk /dev/sda, i get this :
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 3916 31350847+ 8e Linux LVM
/dev/sda3 3917 6527 20972857+ 83 Linux
/dev/sda4 6528 13054 52428127+ 83 Linux
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Mar 25, 2010
In one of my servers running CentOS 5.4, can't detect the total amount of memory installed (32Gb) and it can only see 14Gb.
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Feb 23, 2009
I'm researching about symbolic links been used with samba / CIFS:I'd like that the user that uses a MS-Windows OS could see my shared folder on CentOS 5 and the symbolic links that are inside this folder. Well, it works but, the user will see that the size of the file is bigger than the real file. Apparently, CIFS gets the size of the symbolic link (aproxim.32K) and add it to the size of the file.Example 1: 100KB file, used with shared folder, MS-Windows's user will see 100KBExample 2: 100KB file, used with symbolic link inside a shared folder, MS-Windows's user will see 132KB. (Sym link + size of file)Is there a way to allow the user only see the size of the file, and not the file + symbolic links ?
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Feb 16, 2011
Why is the info in the (BASH_Profile) file different than (echo $Path). Is the Profile file just there to modify another file and not actually hold information?
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Apr 19, 2011
I am trying to figure out the actual size of files and directories on a CentOS Linux 5 server and when I do a ls -l I see for example at the Directory of /Data 4096 but once in side the directory and I do a ls -l I see larger file sizes. How do I get the actual file size of a Directory to show up?
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May 5, 2011
I'm working on a kickstart install to automate a lot of monotony doing installs. When i use the kickstart install i get an error on boot saying "File based locking initialization failed" "no volume groups found". Then it proceeds to boot up with no issues and appears to work just fine. Below is the section of my ks.cfg for creating the partitions: %include /tmp/partition.cfg is included where the partition info usually occurs. The user is prompted in the pre script for how large they would like the partitions to be and then the script below creates the included file with partition info
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Jul 26, 2009
I have a CentOS5 server with a 1tb hard drive.There is only 80gb of data on that huge drive and now I want to make a bare metal recovery backup using AcronisMy question is, how can I estimate the amount of time the backup will take and the size of the image file? Is it based on the size of my drive or is it based on the amount of data on the drive?
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Jun 10, 2010
Are there software that can split big file size into small file size in Linux?
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May 7, 2011
I have a system with a 2TB RAID level 1 installed (2 x 2TB drives, configured as RAID1 through the BIOS). I installed Centos 5.5 and it runs fine. I now added another 2x2TB drives and configured them as RAID1 through the BIOS.
How do I add this new RAID volume to the existing logical volume?
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Mar 7, 2011
I am installing Ubuntu server 10.10 onto a machine with a 1 tb Hard drive. I have had a host of other problems installing but that is for another thread. My question here is that it takes so long to format such a big drive, and I have heard and read that LVM starts with a small partition and expands it as more room is needed. So the installer crashed and started over so this time I decided to choose 'Guided - Use entire disk and set up LVM' instead of just 'Guided - Use Entire Disk'. So it is asking me to set the size of the LVM Volume. Am I setting the size of the initial volume? or am I setting the max size the volume can expand to?
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Apr 7, 2011
My MP3 Player (Zen:Vision:M) has roughly 60 GB of space and yet Ubuntu insists only 3.6 GB is available. I know this is not true because in Windows the correct amount of room is displayed and can be filled up. Because my music collection is stored in my Linux partition I need to solve this issue if I'm going to actually use my MP3 Player. What is also interesting is the fact that the device doesn't show up in Gparted, System Monitor or fdisk.
When I attempt to look at the Zen's contents through Nautilus I get this message:
Error initializing camera: -1: Unspecified error
And when I update through Banshee every song gives an error of:
Argument cannot be null. Parameter name: obj
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Dec 14, 2010
How can we find the maximum size of the inode table and what decides it, and how the maximum size of volume of file system is decided ?
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Dec 1, 2010
Is it possible to create a logical volume of 18TB in size? I was able to create the volume group but I'm having issues with the logical volume.
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Mar 30, 2010
I did hit a issue with volume extension after reinstalling the OS. SLES 11.2-2.6.31.5-0.1
Before the reinstall I had a single fiber volume with 1 logical drive XFS. I did extend the volume with a second fiber storage and the logical drive extension without any issues. After the reinstall OS everything still worked fine. At one point I did have to extend my volume again and also the logical drive in it. The extension went fine, also the logical drive got bigger on the server side.
But the issue is that the share size for the users stayed the same. It has something to do with the xfs files on the server that are getting installed when creating an xfs file system. I can simulate this issue.
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Jun 23, 2011
My LogVol00 has 1 Tb free space. Now I want to share 500gb of LogVol00 to LogVol04. How can I do this?
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Mar 28, 2010
extend the size of a LVM2 volume group over the remaining free space available on a physical volume. My linux box is a Ubuntu Karmic 9.10 64bit, the 60GB hard disk has 2 win partition for about 19GB, a 1.5GB ext3 boot partition and finally a 36GB LVM partition (/dev/sda4) on which I created a volume group (volgrp) smaller 10GB than the 36GB physical volume (/dev/sda4). What I want now is to extend the size of volume group up to the end of physical volume. I tried to use the "vgextend volgrp /dev/sda4" but system answers me
with following output:
me@pc:~> sudo vgextend volgrp /dev/sda4
Physical volume '/dev/sda4' is already in volume group 'volgrp'
Unable to add physical volume '/dev/sda4' to volume group 'volgrp'.
Here the output of fdisk command:
me@pc:~> sudo fdisk -l
Disk /dev/sda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
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Apr 6, 2010
is it possible to extend a mirrored veritas volume which has two SAN LUNs each one in a seperate EMC storage box.
i need to add diska -> EMC box1
and diskb -> EMC box 2
then i need to increase the size of the mirrored volume.
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Sep 22, 2010
I have a small laptop that came pre-loaded with Windows 7. It's an HP dm3-1030US. I would like to run Ubuntu 10.04 on it. It's a small laptop with a 13.3" screen and no CD/DVD so there's no room for a second HDD and I don't want to dual boot "Too many issues" and I don't have the Windows disk in case anything gets messed up. I have run Ubuntu from a Supertalent 16GB SLC thumb drive but ran out of room after a few updates. Does anyone have experience using a 32GB SDHC SLC for Ubuntu? I'am looking at this one: [URL].
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Mar 6, 2011
My computer has a memory of 32GB,I know rhel6 has a PAE enabled kernel by default. but the command "free -m" only shows total memory of 16GB ,why?
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Dec 27, 2010
i am setting up a raid 1 on a netbook with the 30gb internal ssd as the primary drive and the 32gb sd card as the mirror. i am following the instructions here...
[URL]
i have several working raid 1 arrays under my belt using usb sticks and want to try something more advanced and practical now.i have configured the internal ssd with no trouble, however, the 32gb sd card is not showing up in the installer. so i cannot configure it as the mirror. my 2gb sd cards show up when i run the installer why doesn't the 32gb sd card? if i boot into a session the primary ssd the 32gb card does show up mounted on the desktop. it shown as a dos partition.
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Apr 26, 2010
I purchased a FREECOM 1,5TB external USB-HDD and find out that there was FAT32 as FS. I windos there are not posasible to make bigger FAT32-partition than 32GB. I wan't to have windos-FS to use my work and on my freinds computers.Do you think I could format to NTFS or keep the FAT32? I don't have any big files.
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Apr 22, 2011
I am curious if perhaps I am doing something wrong extracting pages from a pdf doc using pdftk and creating a new file. I am only extracting the odd pages from the file and outputting them to a new file that is now only 20 pages instead of the input's 40 pages, yet the new output file is still 1.4Mb in size, the same as the original.
It seems strange to extract only half the pages of a large document and end up with a result that is the same size. how to streamline the resulting pdf's using pdftk?
BTW this is the command I am using, in case perhaps I am missing an option to optimize file size or something:
Code:
pdftk A=ch15.pdf cat A1-40odd output odd.pdf
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Jun 13, 2011
I was just testing specifying limit on file size to a user and have added the following to /etc/security/limits.conf bob soft fsize 100 This basically should have said not to allow bob to create anyfile greater than 100Kb in size.
But the interesting thing is, if bob already has any file which is greater than 100Kb in size, it even doesn't allow to log him into the system both from console and SSH. Also nothing is logged in logs.. How do I configure it so that, bob can login to the system even though he has any file greater than 100Kb (but doesn't allow him to create file which are greater than 100Kb) ??
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Jul 12, 2010
We have some large files with sampling data in it. Don't want to delete these files. But want to quickly overwrite the file with 0s and/or 1s and preserve the original file size.
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Jun 18, 2010
I am using DD to backup entire system partitions and now I am trying to restore one. The resulting disk image from my buggy process has zero bytes. D'oh.It apparently thinks the image was trailing garbage and ignores it. It deletes the original file and replaces it with a zero byte .dd file. I have the original copy of the image in a dd.gz file. It's 6.3 GB so it may still contain the data.How do I get the original image back without destroying it again?
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Apr 2, 2009
Just out of curiosity, has anyone experienced a problem similar to this:[URL]...after upgrading to 5.3? Comment #1 seems to be a particularly good description of the issue. I am finding this behavior with Bus 003 Device 002: ID 041e:3000 Creative Technology, Ltd SoundBlaster Extigy (USB sound)after upgrading to 5.3. Basically, trying to change the volume with the sliders (either with the gnome applet or the volume control gui) sometimes causes the volume to go way down when you are trying to raise the volume (both with scroll-wheel and dragging the sliders). The left-right bars also get unlocked sporadically. It is most prevalent when actually playing something like a move (eg. with Xine) and trying to change the volume with the volume manager or applet. It's especially noticeable if you are trying to change the volume quickly. I'm not sure much can be done about it, as it appears to be an upstream bug but I'm just curious if anyone else has seen this. I've just added my 2 cents on the RedHat Bugzilla site.
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Jul 7, 2009
I have expanded a HP array by 500GB but am struggling to get Centos (Xenserver installation) to see it.
From the array controller the size of the disk is 1.4TB
Logical Drive: 2
Size: 1.4 TB
Fault Tolerance: RAID 5
Heads: 255
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how I get LVM to see the whole disk that is now available (without destoying daya).
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Aug 19, 2010
I am currently using an M-Audio 7.1 PCI sound card on a headless non-GUI Centos5.5 install. MPD is running in the background for jukebox usage. The problem is, I seem to be at 100% volume output on the jukebox and I can't figure out how to change volume. Using alsaunmute to set volume sets some kind of volume on the soundcard, from what I can tell, but it's like that new volume setting is not being respected by ALSA. I can also set the volume using 'alsamixer' which also produces no noticable effect (100% is the same as 0%, as loud as could be from the PC).
I'm using the digital coax output from the soundcard for this - not the 3.5mm jack (due to stereo reasons beyond my control). Perhaps I'm not modifying the master volume? Thing is, when modify volume settings via an MPD client, such as Minion or one on my phone,�the volume setting does change in the ALSA software, but there's no audible difference. It makes me think alsa is not being used for sound control, but I'm stumped as to how to check otherwise. At least sound plays!
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