Hi,
I have recently installed amanda and have not as yet managed to successfully
obtain a backup to my satisfaction. I have a backup server (Helios) which
also has an amanda client and a remote amanda client (Apollo). The tape
device is a SUN L9 (DLT8000 with autochanger) 40GB (/dev/rmt/1n). Helios is
a SUN Ultra1 single CPU with 512Mb memory; not a large machine (runs email,
samba, web and file serving). Apollo is a SUN E420R with 3 CPU and 1GB
memory (runs compilers and used for software development). I have other
servers I wish to backup as well.
I have managed to backup Helios and parts of Apollo using dump uncompressed.
I want to backup the user partitions compressed with gtar. I believe I
have applied the tar-1.12 patch.
The Apollo fails to return an estimate and fails to backup. The estimates
are taking about 6hrs to complete. Helios partitions that don't fit on the
holding disk take forever to put on tape. The DLT does not stream as I
would have expected. There is also an Index Tee [broken pipe] error on
Apollo.
I have a parallel backup of Helios only to exabyte (/dev/rmt/0u) and to
RAID5 disks using gtar with hardware compresson that takes about 4 hours to
complete. This uses a very basic script. I wish to replace the script with
amanda.
How do I speed the size estimation up and without adding holding disk how
do I speed up the dumping to tape? Can I improve the streaming? Anything
else I should be doing to improve things; I know I should be using
Amanda-2.4.2p2 rather than Amanda-2.4.2p1 but I would like to get a decent
backup first. How long should a backup of this size take (see
helios_partition and apollo_partition)?
the attachments are gzip'd, tar'd *.debug files.
TIA
Sheldon Knight
Systems Administrator
Open Telecommunications (NZ) Limited
P.O. Box 10-388 DDI: +64 4 495 9161
Clayton Ford House CELL: +64 25 540 854
128-132 The Terrace FAX: +64 4 495 8419
Wellington Email:[EMAIL PROTECTED]
New Zealand www.opentelecommunications.com
apollo.amanda.debug.tar.gz
helios.amanda.debug.tar.gz
helios_conf.tar.gz
