On Fri, Oct 19, 2012 at 2:49 PM, Peter Kain <pkain42(a)gmail.com> wrote:
> Thanks for the quick replies:
>
> The volume is the destination for a SnapMirror from the production filer.
>
> The volume contains a single LUN.
>
> FAS3210> df -h /vol/papayasg1_mirror
> Filesystem total
> used avail capacity Mounted on
> /vol/papayasg1_mirror/ 260GB 212GB
> 47GB 82% /vol/papayasg1_mirror/
> /vol/papayasg1_mirror/.snapshot 0GB 11GB 0GB
> ---% /vol/papayasg1_mirror/.snapshot
>
> The LUN is 200GB
>
> FAS3210> lun show /vol/papayasg1_mirror/papayasg1db
> /vol/papayasg1_mirror/papayasg1db 200.0g (214778511360) (r/o, online)
>
> NetApp OnCommand System Manager reports that the LUN is 60% used with 79GB
> free(not sure how to do this at the command line). So that would be 120GB
> used and that matches what I see when i run a dump. When I run smtape
> backup it reports 139GB backed up. Not sure why but I think it has to do
> with SnapShots.
>
> Here's today's test run to a tape drive:
>
> -- dump takes 19 minutes 34 seconds to back up 120GB@105MB/sec , which I
> consider to be rather good for an LTO4 tape drive
>
> -- smtape backed up 139.481 GB bytes in 0:44:56 so 52MB/sec
>
>
> FAS3210> sysstat -u 3
> CPU Total Net kB/s Disk kB/s Tape kB/s Cache Cache
> CP CP Disk
> ops/s in out read write read write age hit
> time ty util
> 2% 0 0 0 0 0 0 0 >60 100%
> 0% - 0%
> 1% 0 0 0 0 0 0 0 >60 100%
> 0% - 0%
> 1% 0 0 0 9 297 0 0 >60 92%
> 4% T 3%
> 5% 0 0 0 0 0 0 0 >60 100%
> 0% - 0%
>
>
> FAS3210> mt -f nrst0h status
> Tape drive: IBM LTO 4 ULT3580
> Status: ready, write enabled
> Format: LTO 4 800GB
> fileno = 0 blockno = 0 resid = 0
>
>
>
> FAS3210> date; dump 0f nrst0h /vol/papayasg1_mirror; date
> Fri Oct 19 12:58:34 PDT 2012
>
> DUMP: Using Full Volume Dump
> DUMP: Dumping tape file 1 on nrst0h
> DUMP: Date of this level 0 dump: Fri Oct 19 02:50:36 2012.
>
> DUMP: Date of last level 0 dump: the epoch.
> DUMP: Dumping /vol/papayasg1_mirror to nrst0h
>
> DUMP: mapping (Pass I)[regular files]
> DUMP: mapping (Pass II)[directories]
> DUMP: estimated 126938643 KB.
>
> DUMP: dumping (Pass III) [directories]
> DUMP: dumping (Pass IV) [regular files]
> DUMP: Fri Oct 19 13:03:35 2012 : We have written 33948408 KB.
> 32GB@110MBsec
> DUMP: Fri Oct 19 13:08:35 2012 : We have written 68791721 KB.
> 33GB@113MBsec
> DUMP: Fri Oct 19 13:13:35 2012 : We have written 99138845 KB.
> 28GB@98MB/sec
> DUMP: dumping (Pass V) [ACLs]
> DUMP: 126442444 KB
> DUMP: This dump has written to 1 tapefile(s).
> DUMP: DUMP IS DONE
> Fri Oct 19 13:18:08 PDT 2012
>
>
> FAS3210> smtape backup /vol/papayasg1_mirror nrst0h
>
>
> FAS3210> rdfile /etc/log/backup
>
> (null) Fri Oct 19 13:20:18 PDT /vol/papayasg1_mirror CLI-Backup (nrst0h)
> 25 Fri Oct 19 13:20:18 PDT /vol/papayasg1_mirror BKP-Start (level 0 backup
> of Backup Set ID b93ab842-1bbc-11e2-8766-00a09813e8e0)
> 25 Fri Oct 19 13:20:18 PDT /vol/papayasg1_mirror BKP-Params
> (originator=CLI mode=dw-data tape_record_size=240KB tape=nrst0h
> all_snapshots tape_seeding)
> 25 Fri Oct 19 13:20:19 PDT /vol/papayasg1_mirror BKP-DW-Start
> 25 Fri Oct 19 14:05:12 PDT /vol/papayasg1_mirror BKP-DW-End (phase
> completed in 0:44:53; 34870380 blocks moved)
> 25 Fri Oct 19 14:05:14 PDT /vol/papayasg1_mirror BKP-Tape-Stats
> (wait_time=488s wait_count=264987 total_count=582596
> avail_count=345482/79992/79015/78107)
> 25 Fri Oct 19 14:05:14 PDT /vol/papayasg1_mirror BKP-End (backed up
> 139.481 GB bytes in 0:44:56; performance=186.251 GB/hour)
> FAS3210>
>
> FAS3210> snap list papayasg1_mirror
> Volume papayasg1_mirror
> working...
>
> %/used %/total date name
> ---------- ---------- ------------ --------
> 0% ( 0%) 0% ( 0%) Oct 19 02:50
> FAS3210(1573774893)_papayasg1_mirror.405 (snapmirror)
> 0% ( 0%) 0% ( 0%) Oct 19 02:50 @snapmir@{D1FE5C41-8C5A-4BAF-BE56-C7E32FCF8C0E}
>
> 0% ( 0%) 0% ( 0%) Oct 18 19:03
> FAS3210(1573774893)_papayasg1_mirror.404
> 0% ( 0%) 0% ( 0%) Oct 18 19:03 @snapmir@{9937F7F6-FCC7-4D74-8A79-847C620B5825}
>
> 0% ( 0%) 0% ( 0%) Oct 18 19:01 exchsnap__papaya__recent
> 1% ( 1%) 0% ( 0%) Oct 17 19:01
> exchsnap__papaya_10-17-2012_19.00.24__daily
> 1% ( 1%) 1% ( 0%) Oct 16 19:01
> exchsnap__papaya_10-16-2012_19.00.27__daily
> 2% ( 0%) 1% ( 0%) Oct 16 03:17
> FAS3210(1573774893)_papayasg1_mirror.399 (snapmirror)
> 2% ( 0%) 1% ( 0%) Oct 15 19:01
> exchsnap__papaya_10-15-2012_19.00.25__daily
> 2% ( 0%) 1% ( 0%) Oct 15 13:07
> exchsnap__papaya_10-15-2012_13.06.38__daily
> 3% ( 0%) 1% ( 0%) Oct 14 19:01
> exchsnap__papaya_10-14-2012_19.00.26__daily
> 3% ( 0%) 1% ( 0%) Oct 13 19:01
> exchsnap__papaya_10-13-2012_19.00.38__daily
> 3% ( 0%) 2% ( 0%) Oct 12 19:01
> exchsnap__papaya_10-12-2012_19.00.31__daily
> 4% ( 0%) 2% ( 0%) Oct 11 19:01
> exchsnap__papaya_10-11-2012_19.00.26__daily
> 4% ( 1%) 2% ( 0%) Oct 10 19:01
> exchsnap__papaya_10-10-2012_19.00.32__daily
> 5% ( 1%) 2% ( 0%) Oct 09 19:01
> exchsnap__papaya_10-09-2012_19.00.48__daily
> 6% ( 1%) 3% ( 0%) Oct 08 19:01
> exchsnap__papaya_10-08-2012_19.00.30__daily
> 6% ( 1%) 3% ( 0%) Oct 07 19:01
> exchsnap__papaya_10-07-2012_19.00.22__daily
> 6% ( 0%) 3% ( 0%) Oct 06 19:01
> exchsnap__papaya_10-06-2012_19.00.34__daily
> 7% ( 0%) 3% ( 0%) Oct 05 19:01
> exchsnap__papaya_10-05-2012_19.00.29__daily
> 7% ( 1%) 4% ( 0%) Oct 04 19:01
> exchsnap__papaya_10-04-2012_19.00.28__daily
> 9% ( 2%) 5% ( 1%) Sep 26 21:51
> FAS3210(1573774893)_papayasg1_mirror.358 (snapmirror)
>
>
> Pete
>
>
>
> On Fri, Oct 19, 2012 at 12:01 PM, Kennedy, Jeffrey <jkennedy(a)qualcomm.com>wrote:
>
>> Do you have a large volume with a small amount of data? Dump will only
>> backup the data but smtape backs up all the blocks regardless if there’s
>> data or not.****
>>
>> ** **
>>
>> Jeff Kennedy****
>>
>> Qualcomm, Incorporated****
>>
>> QCT Engineering Compute****
>>
>> 858-651-6592****
>>
>> ** **
>>
>> *From:* toasters-bounces(a)teaparty.net [mailto:
>> toasters-bounces(a)teaparty.net] *On Behalf Of *Peter Kain
>> *Sent:* Friday, October 19, 2012 10:24 AM
>> *To:* toasters(a)teaparty.net
>> *Subject:* smtape vs. dump****
>>
>> ** **
>>
>> I'm looking at backing up our filer to tape for DR purposes. I've tested
>> both smtape and dump and was surprised that dump was 3 times faster than
>> smtape. The test was preformed on a idle filer. The filer is the
>> destination for SnapMirrors at night and idle during the day.
>>
>> Given that smtape is a block backup I'd expect it to be as fast or faster
>> than dump. The test Volume contains a single LUN.
>>
>> FAS3210> version
>> NetApp Release 8.0.2P6 7-Mode: Fri Jan 27 14:48:08 PST 2012
>>
>>
>> - filer is idle
>>
>> FAS3210> sysstat -u 1
>> CPU Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk
>> ops/s in out read write read write age hit time ty util
>> 2% 0 1 0 0 0 0 0 2s 100% 0% - 0%
>> 1% 0 2 2 0 0 0 0 2s 100% 0% - 0%
>>
>> - dump to null takes about 13 minutes
>>
>> FAS3210> date; dump f null /vol/papayasg1_mirror; date
>> Tue Oct 16 12:48:06 PDT 2012
>> DUMP: Using Full Volume Dump
>>
>> DUMP: Dumping tape file 1 on null
>> DUMP: Date of this level 0 dump: Tue Oct 16 03:17:08 2012.
>> DUMP: Date of last level 0 dump: the epoch.
>> DUMP: Dumping /vol/papayasg1_mirror to null
>> DUMP: mapping (Pass I)[regular files]
>> DUMP: mapping (Pass II)[directories]
>> DUMP: estimated 126361315 KB.
>> DUMP: dumping (Pass III) [directories]
>> DUMP: dumping (Pass IV) [regular files]
>> DUMP: Tue Oct 16 12:53:07 2012 : We have written 52672652
>> KB. 50GB@171MB/sec
>> DUMP: Tue Oct 16 12:58:07 2012 : We have written 99181873 KB.
>> 44GB@151MB/sec
>> DUMP: dumping (Pass V) [ACLs]
>> DUMP: 125867380 KB 120GB@155MB/sec
>> DUMP: DUMP IS DONE
>> Tue Oct 16 13:01:18 PDT 2012
>>
>> - smtape backup to null takes 44 minutes
>>
>> FAS3210> rdfile /etc/log/backup
>> (null) Tue Oct 16 13:05:32 PDT /vol/papayasg1_mirror CLI-Backup (null)
>> 19 Tue Oct 16 13:05:32 PDT /
>> vol/papayasg1_mirror BKP-Start (level 0 backup of Backup Set ID
>> 2bc95ed2-195f-11e2-8766-00a09813e8e0)
>> 19 Tue Oct 16 13:05:32 PDT /vol/papayasg1_mirror BKP-Params
>> (originator=CLI mode=dw-data tape_record_size=240KB tape=null all_snapshots
>> tape_seeding)
>> 19 Tue Oct 16 13:05:33 PDT /vol/papayasg1_mirror BKP-DW-Start
>> 19 Tue Oct 16 13:50:26 PDT /vol/papayasg1_mirror BKP-DW-End (phase
>> completed in 0:44:53; 34394279 blocks moved)
>> 19 Tue Oct 16 13:50:26 PDT /vol/papayasg1_mirror BKP-Tape-Stats
>> (wait_time=0s wait_count=0 total_count=0 avail_count=0/0/0/0)
>> 19 Tue Oct 16 13:50:26 PDT /vol/papayasg1_mirror BKP-End (backed up
>> 137.577 GB bytes in 0:44:54; performance=183.844 GB/hour)
>>
>>
>> --
>> Pete Kain
>> 310-506-4475****
>>
>
>
>
> --
> Pete Kain
> 310-506-4475
>
--
Pete Kain
310-506-4475