[TriLUG] Slower Tape Backup After Upgrade
Paul D. Boyle
boyle at laue.chem.ncsu.edu
Thu Sep 30 16:03:43 EDT 2004
As I have mentioned previously on this list, I recently upgraded my SuSE
7.3 box to SuSE 9.1 (this is a SCSI box). I have a backup script which
runs 3x a week and write the data to tape drive. Before the upgrade
the back up would archive about 8GB in about 75-80 minutes. After the
upgrade the same back up (actually, less data because I cleared out
about 2GB of "stuff") takes 9 *hours*. Here are excerpts from 'dmesg'
which give the make and model of the scsi adapter and tape drive:
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec aic7890/91 Ultra2 SCSI adapter>
aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs
(scsi0:A:6): 10.000MB/s transfers (10.000MHz, offset 15)
Vendor: ARCHIVE Model: Python 04106-XXX Rev: 735B
Type: Sequential-Access ANSI SCSI revision: 02
Kernel is stock (latest updated) SuSE 9.1 (ver 2.6.5-7.108).
Also, FYI, I am using 'cpio -o -L -Hcrc' the heart of the backup script.
Anyone have any ideas as to why this is happening, or what can be done
Thanks for any help.
Paul D. Boyle | boyle at laue.chem.ncsu.edu
Director, X-ray Structural Facility | phone: (919) 515-7362
Department of Chemistry - Box 8204 | FAX: (919) 515-8909
North Carolina State University | http://www.xray.ncsu.edu
Raleigh, NC, 27695-8204
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