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Hi all,
I want some suggestion about my external storage & filesystem.
I have 1 external storage(Compaq Raid Array 4100) connected 2 linux
server(Compaq Proliant ML530) via fibre channel.
I mount the same patition to both server
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[root@LINUX1 /root]# more /etc/fstab
/dev/ida/c0d0p1 / ext2 defaults 1 1
/dev/ida/c0d0p5 /home ext2 defaults 1 2
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
none /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
/dev/ida/c0d0p6 swap swap defaults 0 0
/dev/sda1 /ra4100/lun1 ext2 defaults 0 0
/dev/sda2 /ra4100/lun2 ext2 defaults 0 0
/dev/sda3 /ra4100/lun3 ext2 defaults 0 0
/dev/sda4 /ra4100/lun4 ext2 defaults 0 0
[root@LINUX2 /root]# more /etc/fstab
/dev/ida/c0d0p1 / ext2 defaults 1 1
/dev/ida/c0d0p5 /home ext2 defaults 1 2
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
none /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
/dev/ida/c0d0p6 swap swap defaults 0 0
/dev/sda1 /ra4100/lun1 ext2 defaults 0 0
/dev/sda2 /ra4100/lun2 ext2 defaults 0 0
/dev/sda3 /ra4100/lun3 ext2 defaults 0 0
/dev/sda4 /ra4100/lun4 ext2 defaults 0 0
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when I copy file to the external storage by using server #1(LINUX1) and
then 'ls -l' I can see the file
but I can't see the file immediately when I see from LINUX2.I must unmount
& mount it before.
1.What should I do If I want to see the files that create by the other
server immediately? and What the filesystem that I must use?
when I copy file to the external storage by using LINUX1 and also copy
another file to the external storage by using LINUX2 at the
same patition(same mount point)
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LINUX1 LINUX2
copy a.txt to /ra4100/lun1 copy b.txt to /ra4100/lun1
'ls' will see a.txt b.txt
If I unmount & mount the /ra4100/lun1 at LINUX1 first, the file a.txt will
be lost
'ls' will see b.txt b.txt
and If I unmount & mount the /ra4100/lun1 at LINUX2 first, the file b.txt
will be lost
'ls' will see a.txt a.txt
==============================================================
2.How can I prevent this error? 'my file is very important'. If It lost
maybe my boss will fine me! :-(
I plan to use piranha (FOS) if I can't mount the same patition at the same
time.I think I will use piranha to activate the patition at a time.
Anyone have any comment and suggestion please reply this mail....
Thanks a lot :-)
Benyamin W.
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