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тАО07-15-2009 05:21 AM
тАО07-15-2009 05:21 AM
HP Storage Works 2000 - HP MAS Storage
We are using HP MAS Storage and we are mounting luns using iscsi.
Curently we have a problem which is described below,
We are mounted this iscsi storage in one of our linux server(server1). mount device it shows on server1 is sdd1 and we mounted to /test in server1.
And we also mounted the same storage in another server(server2) as /test.
But we could not able to see the changes happening one mount to another.
For example if I create a file in server1:/test mount it is not reflecting on server2:/test .
To see the file currently I am restarting the iscsi daemon and re-mounting the same to server2.
Please help me in this regard.
Is there any command/utility which will reflect the cahnges in storage on all servers dynamicaly.
Kindly please suggest on this.
Thanks in advance.
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тАО07-15-2009 05:28 AM
тАО07-15-2009 05:28 AM
Re: HP Storage Works 2000 - HP MAS Storage
if you try to share devices with two or more systems you need to have either a cluster file system in place or some other shared filesystem such as polyserve. if you do not do this you risk corruption to your data.
hth
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тАО07-15-2009 05:30 AM
тАО07-15-2009 05:30 AM
Re: HP Storage Works 2000 - HP MAS Storage
If so please tell me how can I achieve this?
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тАО07-15-2009 06:02 AM
тАО07-15-2009 06:02 AM
Re: HP Storage Works 2000 - HP MAS Storage
>Can I have this in my server. If so please tell me how can I achieve this?
You need to buy and install very expensive software to your servers to achieve this.
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тАО07-15-2009 06:12 AM
тАО07-15-2009 06:12 AM
Re: HP Storage Works 2000 - HP MAS Storage
storage formatted from RHEL4 with ext3 filesystem.
What is the way where I can see changes happening on both the server.
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тАО07-15-2009 06:29 AM
тАО07-15-2009 06:29 AM
Re: HP Storage Works 2000 - HP MAS Storage
there are a number of options , try a google search on linux cluster and linux shared filesystem.
fwiw
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тАО07-15-2009 07:06 AM
тАО07-15-2009 07:06 AM
Re: HP Storage Works 2000 - HP MAS Storage
do you need access from both systems in real time ? would a snapshot or regular snapshots be sufficient for your needs ?
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тАО07-15-2009 09:04 PM
тАО07-15-2009 09:04 PM
Re: HP Storage Works 2000 - HP MAS Storage
from server1 I will copy some files which should reflect in server2 also. Because these files are used by machines who have access to server2.
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тАО07-15-2009 09:48 PM
тАО07-15-2009 09:48 PM
Re: HP Storage Works 2000 - HP MAS Storage
if you're using RHEL try GFS2 as cluster file system.
http://sources.redhat.com/cluster/gfs/
Hope this helps.
Best regards,
Patrick
Patrick
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тАО07-15-2009 09:55 PM
тАО07-15-2009 09:55 PM
Re: HP Storage Works 2000 - HP MAS Storage
All my files are currently on ext3 filesystem.
please suggest.