Re: Problem with compression?
2003-02-21 19:33:34
On Fri February 21 2003 14:51, John Oliver wrote:
>I got this report from amanda. It looks to me like it's reporting
> that it used 48.9% of the tape (a DLT 4000 20/40GB), but that it
> ran out of space.
>
>
>These dumps were to tape Indyme008.
>*** A TAPE ERROR OCCURRED: [[writing file: No space left on
> device]]. Some dumps may have been left in the holding disk.
>Run amflush to flush them to tape.
>The next tape Amanda expects to use is: Indyme009.
>
>FAILURE AND STRANGE DUMP SUMMARY:
> backup /dev/hda1 lev 1 FAILED [out of tape]
> backup /dev/hda1 lev 1 FAILED [dump to tape failed]
>
>
>STATISTICS:
> Total Full Daily
> -------- -------- --------
>Estimate Time (hrs:min) 0:04
>Run Time (hrs:min) 6:40
>Dump Time (hrs:min) 1:58 1:56 0:02
>Output Size (meg) 9737.1 9611.4 125.7
>Original Size (meg) 19162.4 19028.8 133.6
Humm, if thats a 40gig tape (with compression) it would be about a
20 gigger without. And if hardware compression is also enabled, it
would not be unusual to over-run the EOT because the compressed
stuff you are sending it will usually expand some, often 15 to 20%
in going thru the hardware compressor too.
Throw in that marketing is usually a bit optimistic in saying its a
20 gigger without compression, and that always needs a fudge factor
when actually estimating, and it likely this will happen.
Also, while this doesn't enter into it for me, see the average dump
rates reported below, how does that compare to the drives rated
speed at its compression state? If that drive is faster then the
data comeing in, it will write null blocks for a bit waiting on
data, and this wastes space. Could be a pretty good percentage
under the right conditions, like no, or too small a holding disk.
>Avg Compressed Size (%) 50.8 50.5 94.1
> (level:#disks ...)
>Filesystems Dumped 18 17 1 (1:1)
>Avg Dump Rate (k/s) 1406.6 1412.5 1068.3
>
>Tape Time (hrs:min) 1:56 1:55 0:01
>Tape Size (meg) 9738.0 9612.2 125.8
>Tape Used (%) 48.9 48.2 0.6
> (level:#disks ...)
>Filesystems Taped 18 17 1 (1:1)
>Avg Tp Write Rate (k/s) 1427.5 1427.3 1438.5
>
>
>NOTES:
> planner: Incremental of tgs-2:/dev/hda2 bumped to level 3.
> planner: Incremental of devdist:/dev/hda2 bumped to level 2.
> planner: Incremental of qaweb:/dev/hdc2 bumped to level 2.
> planner: Full dump of tgs-2:/dev/hda2 promoted from 4 days
> ahead. planner: Full dump of devdb:/dev/hda2 promoted from 4 days
> ahead. planner: Full dump of qaweb:/dev/hdc2 promoted from 4 days
> ahead. planner: Full dump of qadb:/dev/hda2 promoted from 4 days
> ahead. planner: Full dump of devdist:/dev/hda2 promoted from 4
> days ahead. planner: Full dump of devweb:/dev/hda2 promoted from
> 4 days ahead. planner: Full dump of cm:/dev/hda7 promoted from 4
> days ahead. planner: Full dump of qadist:/dev/hda2 promoted from
> 4 days ahead. planner: Full dump of proddist:/dev/hda2 promoted
> from 4 days ahead. planner: Full dump of proddb:/dev/sda2
> promoted from 5 days ahead. planner: Full dump of
> qacoll:/dev/hda2 promoted from 5 days ahead. planner: Full dump
> of devcoll:/dev/hdc2 promoted from 5 days ahead. planner: Full
> dump of qaall:/dev/hdc2 promoted from 5 days ahead. planner: Full
> dump of prodweb:/dev/sda2 promoted from 5 days ahead. planner:
> Full dump of cm:/dev/hda5 promoted from 5 days ahead. planner:
> Full dump of cm:/dev/hda3 promoted from 5 days ahead. planner:
> Full dump of cm:/dev/hda1 promoted from 5 days ahead. taper: tape
> Indyme008 kb 20040128 fm 19 writing file: No space left on device
> driver: dumper0 pid 28624 is messed up, ignoring it.
> driver: dumper0 exited with signal 9
>
>
>DUMP SUMMARY:
> DUMPER STATS TAPER
> STATS HOSTNAME DISK L ORIG-KB OUT-KB COMP% MMM:SS
> KB/s MMM:SS KB/s
>-------------------------- ---------------------------------
>------------
>backup /dev/hda1 1 FAILED
>---------------------------------------
>cm /dev/hda1 0 4770 2720 57.0 0:04 604.5
>0:031055.0
>cm /dev/hda2 1 136810 128800 94.1 2:011068.3
>1:301438.5
>cm /dev/hda3 0 401740 315040 78.4 2:501853.7
>3:411425.5
>cm /dev/hda5 0 81950 26272 32.1 0:211239.8
>0:241117.2
>cm /dev/hda7 0 62900 20096 31.9 0:161243.1
>0:151316.8
>devcoll /dev/hdc2 0 867590 283776 32.7 2:521651.1
>3:151455.1
>devdb /dev/hda2 0 1143680 334272 29.2 3:171695.0
>3:541426.1
>devdist /dev/hda2 0 958190 309536 32.3 3:041685.3
>3:371425.0
>devweb /dev/hda2 0 970370 321056 33.1 3:071718.5
>3:451426.6
>proddb /dev/sda2 0 1054360 339488 32.2 4:141335.8
>3:581428.7
>proddist /dev/hda2 0 864620 280992 32.5 6:30 721.1
>3:171423.5
>prodweb /dev/sda2 0 672850 227424 33.8 3:001261.4
>2:371449.8
>qaall /dev/hdc2 0 866380 283136 32.7 2:511651.3
>3:191422.3
>qacoll /dev/hda2 0 867580 283808 32.7 2:571605.4
>3:201421.3
>qadb /dev/hda2 0 1059160 301600 28.5 3:081603.4
>3:321424.4
>qadist /dev/hda2 0 866450 282688 32.6 2:551617.6
>3:181427.1
>qaweb /dev/hdc2 0 1091370 306976 28.1 3:071638.5
>3:361422.7
>tgs-2 /dev/hda2 0 76514805924064 77.4 71:351379.4
>69:061429.0
>
>(brought to you by Amanda version 2.4.3)
--
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz 512M
99.23% setiathome rank, not too shabby for a WV hillbilly
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