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Re: filesystem limit?
2004-03-16 21:06:10
Geoff Swavley wrote:
I was wondering if anyone could tell me why amanda seems to split
my filesystem into 2 "holding" files? An error has occurred so these filesare
It sounds like you have other, unrelated problems, but check the setting
of "chunksize" in amanda.conf, that is usually what determines dumps
getting split up into multiple holding files. In any case, it is not
determined by the filesystem--you can give amanda a chunksize that is
too large for some filesystem type, in which case it will keep writing
until it gets an I/O error. The holding files are concatenated during
writing to tape, at which point the holding file size becomes irrelevant.
Most "modern" filesystems can support file sizes up to the TB range--I'm
using a chunksize of 256GB on Linux XFS, it could be larger but Why go
larger than the size of the holding disk? Exceptions include (but are
not limited to) ext2, SGI efs, iso9660, FAT(12|16|32), NFSv2, not sure
about ufs, hfs, NTFS, I'm sure there are others. 2 GB and 8 GB are
typical limits. But as I said AFAIK amanda will not automagically set
the chunksize for the holding disk filesystem type, it would just keep
writing until it got an I/O error, but then there have been a lot of
changes from 2.4.2 to 2.4.4 that I am just catching up with now.
--jonathan
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