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JFS to JFS2 conversion
- Thread starter ranjit
- Start date
No
You'll have to backup the filesystem contents remove the JFS filesystem and recreate it as JFS2.
Are you running a 32-bit Kernel, if so I'd give JFS2 a miss I've heard of a problem where metadata changes were registered, but data updates never hit disk so thousands of files had size=0 after reboot.
Check with IBM as this may now have been patched.
Mike
"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."
You'll have to backup the filesystem contents remove the JFS filesystem and recreate it as JFS2.
Are you running a 32-bit Kernel, if so I'd give JFS2 a miss I've heard of a problem where metadata changes were registered, but data updates never hit disk so thousands of files had size=0 after reboot.
Check with IBM as this may now have been patched.
Mike
"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."
RMGBELGIUM
MIS
we are using AIX 5.2 ML06 on a H80 , 32 bit kernel , and JFS2 Filesystems.So I don't think that's a requirement...
regards,
R.
regards,
R.
Hi Ranjit,
It depends on whether you are planning convert jfs of rootvg default filesystems or non-default filesystems.
For non-default filesystems.Its quite simple.
** Take the backup of the jfs filesystems.
** Create new jfs2 filesystems with new mountpoints.
** Restore and verify.
** Remove the old jfs filesystems.
** Rename mountpoints of jfs2 filesystems to original.
For rootvg default filesystems. its bit tricky. i tried on one of the test box some time one year back. However, you need to do the testing once again. Some guide lines are below.
** change kernel 32bit -->64bit
** reboot
** run mkszfile
** edit image.data file and change fstype: jfs to jfs2
** mksysb backup using existing image.data file
** finally restore mksysb
Hope its useful.
aixnag
IBM Certified Specialist - P-series AIX 5L Administration
IBM Certified Specialist - AIX V4 HACMP
IBM eServer Certified Specialist – p690 Technical Support
IBM Certified Solutions Expert - DB2 UDB V7.1 Database Administration for Unix, Linux, Windows and OS/2
It depends on whether you are planning convert jfs of rootvg default filesystems or non-default filesystems.
For non-default filesystems.Its quite simple.
** Take the backup of the jfs filesystems.
** Create new jfs2 filesystems with new mountpoints.
** Restore and verify.
** Remove the old jfs filesystems.
** Rename mountpoints of jfs2 filesystems to original.
For rootvg default filesystems. its bit tricky. i tried on one of the test box some time one year back. However, you need to do the testing once again. Some guide lines are below.
** change kernel 32bit -->64bit
** reboot
** run mkszfile
** edit image.data file and change fstype: jfs to jfs2
** mksysb backup using existing image.data file
** finally restore mksysb
Hope its useful.
aixnag
IBM Certified Specialist - P-series AIX 5L Administration
IBM Certified Specialist - AIX V4 HACMP
IBM eServer Certified Specialist – p690 Technical Support
IBM Certified Solutions Expert - DB2 UDB V7.1 Database Administration for Unix, Linux, Windows and OS/2
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