Unsolved
This post is more than 5 years old
36 Posts
0
747
snap view mount issues
i have a host - hpux 11.0 , cx 3-80
3 LUNS - lun 1 , 2 , 3 (already have file systems and lots of free space on VG's)
i use clarion snaps .
last night , i need to recover something from snap , so i created 4 files systems using above LUNS . i mounted the snap luns on the same host
and started copying from snap luns (which i mounted ) to newly created file systems . After copying for about 2-3 hours , i started seeing some i/o error on the system . I checked the navi and founf that my session associated with the LUN are gone . I just the navi log and found out that the Snap LUN got full (100%) and probably clariion removed them due to some integrity issues.
I think i figure out that it is not practice to mount the snap on the same host but like to know your opinion and some root cause.
3 LUNS - lun 1 , 2 , 3 (already have file systems and lots of free space on VG's)
i use clarion snaps .
last night , i need to recover something from snap , so i created 4 files systems using above LUNS . i mounted the snap luns on the same host
and started copying from snap luns (which i mounted ) to newly created file systems . After copying for about 2-3 hours , i started seeing some i/o error on the system . I checked the navi and founf that my session associated with the LUN are gone . I just the navi log and found out that the Snap LUN got full (100%) and probably clariion removed them due to some integrity issues.
I think i figure out that it is not practice to mount the snap on the same host but like to know your opinion and some root cause.
kelleg
4.5K Posts
1
October 9th, 2009 12:00
You should not have both the source LUN and the snap mounted on the same host.
Below is a article about reserve LUNs
Reserve LUNs
White Paper: EMC CLARiiON Reserved LUN Pool Configuration Considerations - Best Practices Planning
http://powerlink.emc.com/km/live1/en_US/Offering_Technical/White_Paper/H1585_clariion_resvd_lun_wp_ldf.pdf
glen
dseth1
36 Posts
0
October 9th, 2009 14:00
dseth1
36 Posts
0
October 9th, 2009 14:00
i can mount the snap lun to the different a different host . but i still need to perform copy and this will again increase the writes and grow the snap reserved luns . Is there a way i can stop the changes from happening to my Snap LUNS while iam doing the copy . This way i don't have to worry about the filling my reserver snap luns .
dynamox
2 Intern
2 Intern
•
20.4K Posts
0
October 9th, 2009 18:00
6.0.90195.1757828
SKT2
2 Intern
2 Intern
•
1.3K Posts
0
October 11th, 2009 03:00