Amanda-Users

Re: dumps fail: data timeout

2002-08-28 16:15:50
Subject: Re: dumps fail: data timeout
From: Gene Heskett <gene_heskett AT iolinc DOT net>
To: amy AT real-time DOT com, amanda-users AT amanda DOT org
Date: Wed, 28 Aug 2002 15:44:36 -0400
On Wednesday 28 August 2002 15:13, Amy Tanner wrote:
>On Wed, Aug 28, 2002 at 02:30:41PM -0400, Gene Heskett 
(gene_heskett AT iolinc DOT net) wrote:
>> 3600 certainly does seem like enough, thats ten hours!

My mistake (fat fingers on small calc), thats an hour, s/b enough.

>> What about the etimeout value?  Thats the amount of time allowed
>> forf the estimate phase's report to come back.
>
>etimeout 300

Which looks like enough, but note on down the page where it 
indicates it took 7 minutes, not 5.

>It looks like the estimate phase completes though:
>
>/-- delphi.ahp /u04 lev 0 FAILED [data timeout]
>sendbackup: start [delphi.ahpcrc.org:/u04 level 0]
>sendbackup: info BACKUP=/sbin/dump
>sendbackup: info RECOVER_CMD=/sbin/restore -f... -
>sendbackup: info end

yup

>|   DUMP: Date of this level 0 dump: Tue Aug 27 23:44:06 2002
>|   DUMP: Date of last level 0 dump: the epoch
>|   DUMP: Dumping /dev/ida/c0d5p1 (/u04) to standard output
>|   DUMP: Label: none
>|   DUMP: mapping (Pass I) [regular files]
>|   DUMP: mapping (Pass II) [directories]
>|   DUMP: estimated 265593 tape blocks.
>|   DUMP: Volume 1 started at: Tue Aug 27 23:44:15 2002
>|   DUMP: dumping (Pass III) [directories]
>|   DUMP: dumping (Pass IV) [regular files]
>
>\--------
>
>> > We recently switched to hardware compression because we
>> > got a new tape changer.  Perhaps that's the cause of the
>> > problems.
>>
>> Is it slower in terms of mega(or kilo)bytes/second i/o speeds?
>
>Unfortunately I don't have historical reports to check that.  The
>current stats are:
>
>                          Total       Full      Daily
>                        --------   --------   --------
>Estimate Time (hrs:min)    0:07
>Run Time (hrs:min)         9:33
>Dump Time (hrs:min)        8:30       6:20       2:11
>Output Size (meg)       15258.3    10167.3     5091.0
>Original Size (meg)     15258.3    10167.3     5091.0
>Avg Compressed Size (%)     --         --         --   
> (level:#disks ...) Filesystems Dumped           71         20    
>     51   (1:43 2:6 3:2) Avg Dump Rate (k/s)       510.3     
> 457.0      665.0
>
>Tape Time (hrs:min)        1:54       1:21       0:33
>Tape Size (meg)         15260.5    10167.9     5092.6
>Tape Used (%)              46.6       31.0       15.5  
> (level:#disks ...) Filesystems Taped            71         20    
>     51   (1:43 2:6 3:2) Avg Tp Write Rate (k/s)  2284.3    
> 2151.3     2606.0

This doesn't add up, you're moving about 2.2 megs/second, and it 
takes over 8 hours?  My calculator says almost 2.  The network 
speed must be killing you is my first, and probably wrong 
conclusion.

>I'm doing a test dump now with just the 2 machines that are having
> problems.

-- 
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz  512M
99.13% setiathome rank, not too shabby for a WV hillbilly

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