I'm a storage engineer by trade and have mapped a RHEL 4 server, several LUNs. I've mapped each (HBA Initiator) 4 times to seperate fibre channel ports on a storage array.Is there a RH command to see the device mapped 4 times to the target. I would expect to see something in the output that has the subsystems WWN, such as -
... 50060F9004563210
... 50060F9004563220
... 50060F9004563230
... 50060F9004563240
How to device-mapper multipathing in conjunction with fdisk. I am more of a solaris expert and now trying to grasp linux (red hat). I have a server that I plan to cluster (future assignment) which is attached to a Netapp SAN via emulex LPe11002 HBA. I have 8 paths to the LUN I created and I can see the multipath device (/dev/mapper/mpath1). Below is my multipath.conf file:
[Code]....
Question 1: When I look at fdisk -l, I can see all 8 paths to the same LUN. Although I partition /dev/mapper/mpath1, I can still see that 7 of the 8 still say "Disk /dev/sdX doesn't contain a valid partition table". I would think that all 8 would have this removed. I execute '/usr/sbin/lpfc/lun_scan all' and it doesn't work. I am looking to clean this up...what should I do? It seems weird to have to do it to all 8 paths!
Question 2: Why does my alias, 'db' not show up under /dev/mappers?
Question 3: Is there a way for fdisk -l to display one lun rather than displaying all 8 paths to the lun?
What is the standard procedure (commands) people execute when adding a new lun to a server with multipathing so it is nice and clean?
I have servers which contain SATA disks and SAS disks. I was testing the speed of writing on these servers and I recognized that SAS 10.000 disks much more slowly than the SATA 7200. What do you think about this slowness? What are the reasons of this slowness?
I am giving the below rates (values) which I took from my test (from my comparisons between SAS 10.000 and SATA 7200);
dd if=/dev/zero of=bigfile.txt bs=1024 count=1000000 when this comment was run in SAS disk server, I took this output(10.000 rpm)
(a new server,2 CPU 8 core and 8 gb ram)
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 12.9662 s, 79.0 MB/s (I have not used this server yet) (hw raid1)
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I have/had a PC with several hard drives, and a mix of ubuntu and windows on multi boot.The old boot drive died screaming, and I need to start again. (But my data is safe! yay!)
Is there anything special about which drive can be the main drive to start booting from? Or to put it another way, can I install to any of the other 3 and expect it to work, or do I need to switch them around so a different drive is on the connections for the recently dead one?
I also have an application installed under /usr/share/myappHow to make a link to the application installed under myapp in to a directory that is already in my env variable?
View 2 Replies View RelatedThe shell is bash.
The directory path, /this/is/directory/aa, is actually linked to the path /this/is/link/aa.
So when I cd to the aa directory I am in /this/is/link/aa and there is no /this/is/link/bb hence the error with ls.
My question is how does cd understand relative paths and not return an error the way ls does?
at present I compile the same code for different systems (cross compilers)I need to call libs and include paths for the different processors. At present I simply comment out the paths not needed
eg
#INCDIR = -I/cross1/.......
#INCDIR = -I/cross2/.......
[code]....
In nautilus I have but when I need to access that location from dialogs in other apps it doesn't work. E. g., "save page to" dialog in firefox.
View 4 Replies View RelatedI have not been on in about a month or 2. I have no idea how to list this thread. I am hoping that someone like tex can help out. Being lazy with ubuntu seems to have been badong. Ok, I had 2 physical machines and 3 vms. VM's ran under Vbox-ose via a bridge. OS's are buntu x2 and one centOS box. I installed webmin to make things easy ( i thought ).However, after setting webmin, my I have been randomly loosing PATH's. I mean, one minuet i can run sudo apt-get and the next the whole PATH is gone. I tried a compare of my "home" box's bashrc and bash_profile against the other machins, and outside of some alias for colr and the like nothing seems to stand out. Even if I su - to root I am not getting access to the needed paths. Now, while I could export the correct path, I am more conserned with the why of it all.
I would have thought that as long as my group setting on my ssh users were all correct AND the environment had not been changed, all would be good. I can provide more info if someone wants to help me out with this. HOwever, it drove me to a six pack. 8SI have read the man pages. I have used google. I have checked the logs. The logs by the way showed a lil hammering on one of the boxes for root access. [I]t wasnt me. However, I dont seem to be able to see a time stamp.
Is there some sort of standards file path convention for installing softwares that I could follow through? For example, I just learnt how to build Nginx from source. But the default binary path set by nginx is "/usr/local/nginx/sbin". I have seen a couple of tutorials which they specify the location of the installed binary and it is very different from those usual default paths. Thus, got me thinking whether is there some form of file path convention that I should follow?Is there some kind of list which states where do those packages on Debian.org Repository usually installed to?
View 6 Replies View RelatedAdobe Reader ain't available for 64-bit so I'm stuck with XPDF (or Okular, which is better than XPDF) and most stuff won't print worth a hoot. I've been reading the manual pages and somewhere or other I'm missing some thing about adding font paths (or replacing the default font paths). I have the complete Adobe Type Library plus TTF's installed in /usr/local/share/fonts (and they work just fine with OpenOffice.org) but I can't seem to figure out how to get them or the Slackware-provided fonts available to XPDF.
View 3 Replies View RelatedI'd like to backup my whole system to a 2nd disk using rsync (other tools not possible).Which paths should I exclude from the packup?I was thinking about /proc, /dev, the lost+found directories...What other paths am I forgetting?
View 2 Replies View RelatedI'm a csh user. In my .cshrc or .login files, I'd like to add certain directories to my search PATH, but I'd first like to check if those directories are already in the search path before attempting to add them (so don't add the same directory twice). The following isn't working
Code:
if ( "${PATH}" !~ ~/bin ) then
setenv PATH "${PATH}:$HOME/bin"
endif
The problem is that the if-statements always evaluates to TRUE, meaning that ~/bin is always added to the path, even if it's already in the path.
What am I doing wrong in the above regulat expression, or alternatively, what's an easy way to accomplish the same thing?
I've got a script to recursively create symlinks in my home directory to my settings directory, to keep the files under version control. I would like it to skip files which are already symlinked via a parent directory. That is, if I have these files/directories:
~/foo/ -> ~/settings/foo/
~/settings/foo/
~/settings/foo/bar
, how do I check that ~/foo/bar and ~/settings/foo/bar are the same file?
Edit: D'oh, another few minutes of searching revealed the answer: readlink -f $path
Trying to understand my ruby folder structure? Why my gems are scattered all over and why they aren't recognised commands. I'll explain how my installation looks like first:
/usr/bin/ruby
/usr/bin/ruby1.8
/usr/bin/ruby1.9.1
The first is a soft link to ruby1.9.1 because the "ruby" command didn't work in the terminal. I did the same with "gem". I installed rubygems through downloading, extracting and then running setup.rb here: (I created the "ruby" folder)
/home/pc/ruby/rubygems-1.7.2/setup.rb
/usr/bin/gem
/usr/bin/gem1.8
/usr/bin/gem1.9.1
I installed a few gems with "sudo gem install"
> gem list
*** LOCAL GEMS ***
compass (0.10.6)
haml (3.0.25)
mustache (0.99.3)
rake (0.8.7)
So far so good? Well not quite, as it turns out the command "compass version" doesn't seem to exist. My confusion grows with each folder I look into. The following path doesn't make any sense to me, for example. Why would it be hidden? Why is mustache the only gem inside this folder?
/home/pc/.gem/ruby/1.9.1/cache/mustache-0.99.3.gem
First of all, here is "gem environment", which makes even less sense, because I have definately installed rubygems-1.7.2 like I told you in the first paragraph, but here it shows an ancient version 1.3.7. Why? I installed Ubuntu the day before yesterday.
RubyGems Environment:
- RUBYGEMS VERSION: 1.3.7
- RUBY VERSION: 1.9.2 (2010-08-18 patchlevel 0) [x86_64-linux]
- INSTALLATION DIRECTORY: /var/lib/gems/1.9.1
- RUBY EXECUTABLE: /usr/bin/ruby1.9.1
- EXECUTABLE DIRECTORY: /var/lib/gems/1.9.1/bin
- RUBYGEMS PLATFORMS: .....
Ruby --version returns "ruby 1.8.7"...........
Also, as it turns out, all gems are installed into this folder (mustache too! even though it already is inside the other folder), just as "ruby environment" claims:
/var/lib/gems/1.9.1/gems. But none of these gems work. I can't call any of these, except rake. So here is where I probably made the mistake, I think I used "apt-get install rake" in addition to "gem install rake", because the command "rake" wasn't recognised, and the command prompt suggested it. I may have done so with rubygems too... I'm new to Linux, and I figured that the command prompt knew how to install this stuff properly. It can't be normal that I have to create syslinks all over, right? In Windows I didn't run into this problem.
When I asked about filesystems with compression I got recommendation to try ZFS. Looks like it worth trying, however I find tools that manage ZFS (zfs, zpool) quite overcomplexified - you need to create some volume, then add it, then create filesystem on it. And finally it suddenly created things in root directory like /qqq/test and it uses /var/run/zfs/zfs_socket (strange for a filesystem).
How to use ZFS (with FUSE) without it's complicated things with volumes, just as good filesystem with compression, something like mount -o loop image.zfs /mnt/qqq -t zfs-fuse?
How to setup ZFS as non-root? FUSE usually means "user can use it too" (example: ntfs-3g). I expect something like this:
Can ZFS be more usual FUSE filesystem that I can add to /etc/fstab and user can install and use on its own?
After I reboot my Ubuntu 10.04.2 LTS l machine my device paths change (even the boot drive) and this causes havoc on my two RAID5 arrays. The device paths change and causes a mismatch in my fstab and I have to manually mount both RAID arrays every time. It's quite frustrating and annoying and I would love for it to stop. This even happens for the boot path.
Example: my boot path is /dev/sde5 I reboot my machine and my boot path changes to /dev/sdm5
Why does this happen? And more importantly how can I stop it from happening so it stops messing with my RAIDs?
I'm trying my hand at arrays in bash for a backup script. Now I not sure if this is the correct thing to do and just look at website and amended but does'nt work. Could someone tell me where I'm going wrong
LOG_DIR="/home/ops/Desktop/temp"
array[0]=3
array[1]=/home/ops/Desktop/dir1
[code]...
I want to print, using locate, all the paths that contain the element /bin/ but only one instance of each one. If I issue 'locate /bin/' then I have many screens of text with, for example,
/usr/bin/foo1
/usr/bin/foo2
/home/me/bin/foo3
whereas I want to see only
/usr/bin/foo1
/home/bin/foo3
That is to say, if in two lines /bin/ appears with the same prefix (in the example above the prefixes would be /usr and /home/me) I only want to print the first line. Can I pipe locate to grep to do this? I've mentioned locate because it does not scan the whole disk.
How do I find paths on ubuntu. I have installed redcar(ide written in ruby similar to textmate) and rvm for ruby. However I cannot locate where the executables are to update my .bashrc.
View 2 Replies View RelatedI have written a script which reads a text file and takes out absolute and relative paths embedded in the text file.Then the script looks for a string in some text files mentioned in those paths. The problem I am facing is that since these paths are from my working directory,if I try to run the script from a different directory the paths are not read.
View 7 Replies View RelatedAs many developers probably do, I have a Windows based machine on which I run XAMPP locally to test my code and a Linux machine with Fedora as my remote server.As I sometimes use .htaccess as a way to authenticate some parts of the website, I end up having two .htaccess files: one with the local path (something line D:My_Webs) and one with my remote path (something like /var/www/html/) to the password file.I have searched high and low, but I cannot seem to find any trick so that I only have to maintain one version of the .htaccess file which can work on both Linux and on Windows machines.
View 6 Replies View RelatedI am trying to compare two filenames including the paths. Basically if two paths are similar then my program wants to display message. So I need to check for if two pathnames are same in the sorce and destination. So I was trying for the code to compare tow filename sincluding "" and if the Parent FIle Path is found in the child file path then I need to displays ome message. I was trying to modify something like this:
#!/bin/ksh
# Sample script
file1="C:TextLatestArticleNews.txt"
[code]....
I am working on a server which connected to two EMC storage box. when i am checking the multipath information of a disk its showing as 8 paths. how to understand 8 paths for a single disk.
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I have a bunch of MP3 files and I have their paths grouped in a text file. Is it possible to join the relevant MP3 files based on the paths in the text file losslessly?
View 2 Replies View RelatedI'm relatively new to linux in this capacity. I've had to reboot a SAN host (iSCSI initiator). I took a grab of the df -h output before reboot to ensure I was all mounted again afterwards.
Code:
Jupiter:~ # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 30G 18G 11G 64% /
udev 1007M 128K 1007M 1% /dev
/dev/sda3 30G 11G 18G 39% /var
/dev/sdb1 2.0T 1.2T 756G 61% /mnt/kvsan2/distribution
/mnt/kvsan2/distribution/wwwroot/kvAutoUpdate/publish 2.0T 1.2T 756G 61% /home/ftpupload.kv_users/config/ftp
/mnt/kvsan2/distribution/artwork 2.0T 1.2T 756G 61% /home/artwork
192.168.10.45:/mnt/KVSAN5_TH/mp3 2.0T 365G 1.7T 19% /home/ftpupload.kv_users/config/ftp/clips/mp3
192.168.10.45:/mnt/KVSAN5_TH/mpeg 2.0T 1.2T 878G 57% /home/ftpupload.kv_users/config/ftp/clips/mpeg
/mnt/kvsan2/distribution/wwwroot/kvAutoUpdate/publish/musiccon 2.0T 1.2T 756G 61% /home/artwork/Musiccon/autoupdate
/dev/sdc1 50G 23G 25G 49% /home/artwork/Musiccon/musicnew
However upon reboot I am faced with
Code:
Jupiter:~ # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 30G 18G 11G 64% /
udev 1007M 128K 1007M 1% /dev
/dev/sda3 30G 11G 18G 39% /var
/dev/sdb1 2.0T 1.2T 756G 61% /mnt/kvsan2/distribution
Jupiter:~ #
like to create symbolic links on our server which will work from any work station.I guess the problem is that they use absolute paths.Since the absolute path is different from each workstation, they don't work except for the computer on which they were created.Is there a way to make them use relative paths instead?
View 2 Replies View RelatedI am wondering how to change the default paths for Pictures, Documents, Music, etc to different paths (on a different partition within the same HDD). What's the cleanest way of going about this?
View 5 Replies View RelatedIs their (I assume their is) of searching for and deleting duplicate files that exist in different paths?
View 3 Replies View RelatedThe Linux File system uses the file path notation to abstract how data is accessed. Path really must be an environmental variable for the applcication that converts the path name to an inode so what is this application/Daemons name?
View 7 Replies View Related