I have run into a problem using 'rsync' to copy files from local disk
to a SAN mounted LUN / file-system.
The 'rsync' seems to run fine and it reports no errors, but some
files are corrupted (check-sums don't match originals,
and file data is changed).
So far, I have found this problem on both Solaris 9 and Solaris 10
OSes and on several different models of
Sparc systems using different versions of 'rsync' (2.6.8, 3.0.2, and
3.0.6). All of these systems are using
QLogic HBAs and connect to QLogic FC switches and the SAN storage is
on Sun/StorageTek arrays.
My quick example of the problem:
SAN mounted LUN / file-system == /apps
local disk has OS & system files == /
mkdir /apps/junk
rsync -avcHS /sbin/. /apps/junk/.
<no errors reported>
<no errors reported in system logs>
then immediately do the same 'rsync' again
rsync -avcHS /sbin/. /apps/junk/.
it finds 2-3 files where the check-sums don't match and it re-copies
them. And if I do a 3rd 'rsync', it re-copies the same 2-3 files.
If I don't use the "sparse files" option, "-S", the copies are
successful and the data matches
between the original files and the 'rsync'-ed copies. But I need to
use the sparse files processing for the
files that I need to copy.
I do not see this problem if the 'rsync'-s are from:
- local-disk to local-disk
- local-disk to NFS file-system
- NFS file-system to local-disk
What other data would be useful to debug this problem?
=====
Terry Countryman
terry.country...@oit.gatech.edu
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