04-14-2008
mirror external scsi to san
Hi,
How do I mirror an external scsi vg to one hdisk san? The vg has multiple hdisks and the san hdisk has only one.
Is this possible or do I need to create the same hdisks as the scsi? What I meant is, if the scsi vg has 10 hdisk then I need to create also 10 hdisk of san with the same size as per hdisk?
Or I can mirror a logical vg one by one?
Here's the sample of one of the vg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lv110 jfs 3840 3840 8 closed/syncd N/A
lv102 jfs 128 128 1 closed/syncd N/A
lv68 jfs 16 16 1 closed/syncd N/A
loglv03 jfslog 1 1 1 open/syncd N/A
lvcrt01 jfs 178 178 1 open/syncd /crt01
lv106 jfs 16 16 1 open/syncd /db2replication
lv100 jfs 320 320 2 open/syncd /db2logs
paging05 paging 16 16 1 open/syncd N/A
paging06 paging 16 16 1 open/syncd N/A
paging01 paging 16 16 1 open/syncd N/A
lvcrt02 jfs 175 175 1 open/syncd /crt02
lv103 jfs 256 256 1 closed/syncd N/A
As much as possible I don't want a downtime. I don't know what is the best approach.
Thanks in advance,
itik
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LEARN ABOUT DEBIAN
jfs_logdump
jfs_logdump(8) JFS utility - journal log dump jfs_logdump(8)
NAME
jfs_logdump - dump a JFS formatted device's journal log
SYNOPSIS
jfs_logdump [ -a ] device
DESCRIPTION
jfs_logdump dumps the contents of the journal log from the specified JFS formatted device into output file ./jfslog.dmp.
device is the special file name corresponding to the actual device from which the journal log will be dumped (e.g. /dev/hdb1 ).
jfs_logdump must be run as root.
OPTIONS
-a Dump the entire contents of the journal log instead of just the committed transactions since the last synch point.
EXAMPLE
Dump the entire JFS journal log from the 3rd partition of the 2nd hard disk into ./jfslog.dmp:
jfs_logdump -a /dev/hdb3
REPORTING BUGS
If you find a bug in JFS or jfs_logdump, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site:
http://jfs.sourceforge.net/
Please send as much pertinent information as possible, including any jfs_logdump error messages and the complete output of running jfs_fsck
with the -v option on the JFS device.
SEE ALSO
jfs_fsck(8), jfs_mkfs(8), jfs_fscklog(8), jfs_tune(8), jfs_debugfs(8)
AUTHORS
Barry Arndt (barndt@us.ibm.com)
William Braswell, Jr.
jfs_logdump is maintained by IBM.
See the JFS project web site for more details:
http://jfs.sourceforge.net/
October 29, 2002 jfs_logdump(8)