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 followed the guide here on the forums, and still can't get much to show up when running "sensors" from within terminal.This is all that will show up when I run 'sensors' in terminal:This has me puzzled, as I followed the guide exactly as it was stated, and I can't get everything working. Is my hardware too new or something?
View 3 Replies View RelatedI'm not too sure if this is the right topic to post in but if it isn't please move it to the correct topic. I recently opened some ports for my Playstation 3 and the connection test on the PS3 tells me that the ports are open . But when I execute this command
nmap -p 0-60000 192.168.1.5 I get this
Quote:
Starting Nmap 5.21 ( http://nmap.org ) at 2010-10-16 20:54 AUS Eastern Daylight
Time Nmap scan report for PS3 (192.168.1.5)
Host is up (0.00063s latency).
All 60001 scanned ports on PS3 (192.168.1.5) are closed
MAC Address: **:**:**:**:**:** (Sony Computer Entertainment)
Nmap done: 1 IP address (1 host up) scanned in 4.12 seconds
I could be executing the wrong command or something but I have read through the manual and couldn't find anything that helped. I have tried this command on other machines that I have opened ports for and get similar results except for a few Ephemeral ports (80,443 etc.) which also makes me wonder why these aren't listed as open on the PS3?
I have an apache2 php5 on an ubuntu 10.04 it was working fine except today and does not open web site now. I tried to open phpinfo.php but it takes long time and at the end it loads php informations just until date module. I installed php5-cli to find out what does not work properly then I used:
Quote:
# php5 -i
PHP Deprecated: Comments starting with '#' are deprecated in /etc/php5/cli/conf.d/mcrypt.ini on line 1 in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/gd.so' - /usr/lib/php5/20090626+lfs/gd.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib
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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.
I have installed RHEL5U5 but I've also tested RHEL5U4 and the problem is: Once configured the multipath, I restart the server,and with the command-ll mutipath I can see the LUN presented correctly:
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I need to set up 1 disk, the disk is presented to the server on both fibre paths from the SAN. This is the current setup seen:
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I have and RHEL5.4 conecceted to an SAN HSV200. When I present a LUN to it, In system-confg-lvm gui appears a device like /dev/mapth/mapth0 (that�s the correct device to multipath) and other like /dev/sda or /dev/dm-N, as uninitialized entities. How could I configure to not display this device (/dev/sda) and prevent human errors?
This is the things I need:
1- I want (if it is posible...) to disappear the part where it says "uninitialized entities"
2- Is It necesary mantain the partitioning done to default (like /dev/mapper/mpath0p1) with device-mapper-multipath (kpartx command)? or Can I delete it without future problems?
This is the actual configuration that I have:
1- /etc/lvm/lvm.conf
Code:
preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
filter = [ "a/dev/mapper/mpath.*/","a/dev/cciss/.*/","r/.*/" ]
2- /etc/multipath.conf
Code:
#blacklist {
# devnode "*"
#}
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our oracle(oracle 10G) server got a serious problem, the OS is SLES 9 SP4, two HBA adapters(QLogic 2340) with NetApp FC Storage(FAS3140), we have installed multipath-tools on this server and ensure that physical connection and swith configuration are correct, but we only can see a path
:~ # multipath -ll
360a98000572d4d414b4a522d7a62376d dm-2 NETAPP,LUN
[size=200G][features=0][hwhandler=0]
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I upgraded a DL580 G4 server from Red Hat 4.4 to 5.2 (2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:15 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux) and now when I run the multipath - l command I only see one path. There are 4 LUNs being presented on each fibre channel, so I should see sda - sdh in /dev, but I only see sda - sdd.
RPMs
device-mapper-1.02.24-1.el5
device-mapper-event-1.02.24-1.el5
device-mapper-multipath-0.4.7-17.el5
hp_qla2x00src-8.02.11-6
There is a server with two HBA QLA2460, connected via SAN to the SE9980 disk array. RHEL 5.4 (x86_64) is running on the server. In the SAN two zones are set up: HBA1-port1 9980; HBA2 - port2 SE9980. As a result, the server can see:
[Root @ c5 ~] # multipath-ll
mpath1 (1HITACHI_R45028F9022F) dm-2 HITACHI, OPEN-E
[Size = 14G] [features = 1 queue_if_no_path] [hwhandler = 0] [rw]
_ Round-robin 0 [prio = 0] [active]
_ 3:0:0:0 sdb 8:16 [active] [ready]
_ 4:0:0:0 sdc 8:32 [active] [ready]
_ 3:0:0:16384 sdd 8:48 [active] [ready]
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Question: Why OS sees eight ways instead of two? Why do extra ways have such strange LUN (16384, 32768, etc.)?
after some yum update on my CentOS 5.6 server I noticed this error when the server is booting:
"dm multipath kernel driver not loaded"
I'm trying to write a program which would get information from a webpage and display the information on my desktop sort of like a widget. I kind of remember there being something like this already made, but for the life of me I can't remember what it's calledDoes anyone know?
View 1 Replies View RelatedAfter mapping iscsi storage from my netapp and scanning for new devices I run multipath -v2 to create the multipath device handle under /dev/mapping/. This normally takes about 2 seconds or less on every other linux distribution I use. On Stretch it takes a little over 3 minutes. I have tried several different versions of multipath.conf but the result is always the same.
My most recent multipath.conf file is available here : [URL] ....
and the output of multipath -v4 is available here : [URL] ....
I have a linux machine, attached to a fibre channel SAN.
We're in the testing phases and we're attempting to get all of the bugs worked out before this goes live.
If i have my host streaming data to the storage device on the san (or from the device on the san) and simulate a path failure (by shutting down one of the host's ports on the FC switch), multipath does not pick up on another path until about 45 seconds have passed.
I can verify this by watching the statistic graph (which updates once per second) on the storage system.
I see iops running along rather nicely, and then they drop to 0 for 45 seconds, then pick right up to normal again.
This is a RehHat EL 5.5 system, with qlogic HBA's.
Am i being too picky? I'd expect multipath to recover in under 30 seconds, so as to not alarm host applications running on the linux host... 45 seconds seems like a long time to wait for a disk operation to complete.
Any tips on tuning Multipath, or the qlogic card? As it is, i've got the following options in my modprobe.conf.
alias scsi_hostadapter2 qla2xxx
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My multipath.conf looks like:
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i want to remove a path, but is in use.. How can i kill the zombie processes?
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I guess i was wrong deleting first the disks that formed the path, but now how could i kill those zombie processes without a reboot?
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How would you make NIS user information override local user information on client systems? This is what I think is right? Add nis on the passwd registration file on the second line Is this correct?
View 1 Replies View RelatedI 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/.......
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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
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?
