Re: Backup on DDS-4 tapes

2005-03-16 Thread Ludo Koren
> Ludo Koren wrote: >> It doesn't help either... The result is the same. >> >> > Just to check I'm understanding your problem correctly -- > you're expecting to write much more data to the tape than is > actually being written. That's right. I suppose that 54GB o

Re: Backup on DDS-4 tapes

2005-03-16 Thread Alex Zbyslaw
Ludo Koren wrote: It doesn't help either... The result is the same. Just to check I'm understanding your problem correctly -- you're expecting to write much more data to the tape than is actually being written. If that's correct, then there's a couple things I can think of: 1) Your tape drive

RE: Backup on DDS-4 tapes

2005-03-16 Thread Ted Mittelstaedt
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Ludo Koren > Sent: Wednesday, March 16, 2005 1:19 AM > To: [EMAIL PROTECTED] > Cc: freebsd-questions@freebsd.org > Subject: Re: Backup on DDS-4 tapes > > >Anyway, cpio

Re: Backup on DDS-4 tapes

2005-03-16 Thread Ludo Koren
>> # /sbin/dump -Lu0 -B 41943040 -C 32 -f /dev/sa0 /usr >> >> >> > I would guess that your tape drive does hardware compression in > which case the amount of data which fits on a tape is variable. > In such a case you can't tell dump how big the tape is -- I

Re: Backup on DDS-4 tapes

2005-03-16 Thread Ludo Koren
> --pP0ycGQONqsnqIMP Content-Type: text/plain; charset=us-ascii > Content-Disposition: inline > On Monday, 14 March 2005 at 10:38:02 +0100, Ludo Koren wrote: >> Hi, >> >> I am using 5.2.1-RELEASE-p3 for backup on DDS-

Re: Backup on DDS-4 tapes

2005-03-15 Thread Alex Zbyslaw
Ludo Koren wrote: # /sbin/dump -Lu0 -B 41943040 -C 32 -f /dev/sa0 /usr I would guess that your tape drive does hardware compression in which case the amount of data which fits on a tape is variable. In such a case you can't tell dump how big the tape is -- I haven't used options like -B sinc

Re: Backup on DDS-4 tapes

2005-03-14 Thread Greg 'groggy' Lehey
On Monday, 14 March 2005 at 10:38:02 +0100, Ludo Koren wrote: > > Hi, > > I am using 5.2.1-RELEASE-p3 for backup on DDS-4 tapes 40GB in size. > > ... > > Why I cannot dump the filesystem on 2 tapes (it takes 3, it seems it > works without compression) no matter if I

Backup on DDS-4 tapes

2005-03-14 Thread Ludo Koren
Hi, I am using 5.2.1-RELEASE-p3 for backup on DDS-4 tapes 40GB in size. # df -k Filesystem 1K-blocks UsedAvail Capacity Mounted on /dev/vinum/root 1016162 157405 77746517%/ devfs 110 100%/dev /dev/vinum/usr 84746248 54467390