Hi
I recently started using JFS and had a few basic
questions to ask:
1. I could not see any "Size" option in mkfs.jfs. I
presume that means the FS I create will always fill up
the available partition size. Is there any way to
explicitly specify the size of the FS being created ?
2. From the docs, I read that resize is possible with
"mount -o remount,resize /mount point". I tried
specifying resize=<some number> but it does not seem
to work and gives me "bad option" errors. Putting #1
and #2 together, it looks like if I increase the
partition size of an existing JFS partition and then
do a "mount remount,resize", it will basically
increase the size of my FS to the new partition size.
Is this correct ? Is there any option in this case to
specify size explicitly ?
3. Is there any way to shrink the FS ?
4. What are the defragmentation issues? How do I find
out to what extent is my FS defragmented ? Is there
any tool to defrag a JFS partition.
Any help/docs/pointers will be greatly appreciated.
Thanks
Ashish
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