Just finishing up moving one of my backuppc servers to new larger disks,
and figured I'd submit a success story with backuppc_tarpccopy... I
wanted to create a new xfs filesystem rather than my usual dd and
xfsgrowfs, as this thing has been in use since backuppc 2.1 or similar.
Old disks were 10 x 1TB in raid10, new is 6 x 3TB's in raid6 (which in
itself has been upgraded many times).. the new raid6 is FAR faster in
both iops and STR than the old one.
It took about 2 days to rsync the cpool. and another 3 days to run
backuppc_tarcopy over the pc dir. Did see a few errors, all of them
were related to the attrib files, similar to "Can't find
xx/116/f%2f/fvar/flog/attrib in pool, will copy file" The resulting tar
file is 161GB... Working on restoring that now to the new array.
Normally I would have piped the resulting file right back to the new
pool, but I was still moving some files around on that destination.
Done /var/lib/backuppc/pc (1 of 1): 14607973 dirs, 2475639 files,
149214055 hardlinks
Got 100 warnings/errors
Out of curiosity, where are those errors (the attrib in pool ones)
coming from? I still have the old filesystem online if it's something I
should look at.
Here's the stats page:
There are 41 hosts that have been backed up, for a total of:
1027 full backups of total size 33238.07GB (prior to pooling and
compression),
293 incr backups of total size 1636.44GB (prior to pooling and
compression).
Pool is 3826.54GB comprising 7225980 files and 4369 directories (as of
2011-09-25 06:27),
So it IS possible to move a large number of files, it just takes
awhile. I will know in a couple more days if it was fully successful,
but i see no reason why it won't work.
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