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Synthetic Full Backups miss after 4 weeks

IanB
Level 4

‎05-17-2011 04:19 AM

Master/media servers are NBU Enterprise 6.5.4, on Dell PE2950 running Windows 2003 Server R2 X64.

After several years of successful traditional Full/Cumulative backups, I have setup three policies with Synthetic Fulls.  They all start off OK, and the Diff Incrementals are fine.  But the weekly sequence for the Fulls is :- Trad OK, Synth OK, Synth OK, Synth OK, Synth OK, nothing!  The Diff Incrs are unaffected, though - they carry on as intended.  After 4 good Synth Fulls we see no warnings or errors, no bpsynth log, no bpsyn_ entries in bptm log - nothing.  I have captured the nbpemreq -predictall output after the Friday Diff Incr just before the missing Synth, and it shows no entry for the Synth that's due - it has obviously forgotten about it - a scheduler problem perhaps.  To get started again, I just have to run a Trad Full, then we get 4 weekends of Synth Fulls, then it stops again.  All predictable and reproducible.

Two affected policies are big fileshares (>1TB >2m files) on SAN storage attached to a cluster of Dell NX1950's; the third policy is >100GB >1m files on a typical Windows server.  Apart from the number of files, no pattern there.  Our retention policy is 1 month - maybe that's significant (last Trad Full image expires and disappears over the horizon) 

Anybody with experience or ideas about this?

TIA

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7 REPLIES 7

RiaanBadenhorst
Moderator
Moderator
Partner    VIP    Accredited Certified

‎05-17-2011 05:30 AM

Can you post the schedules?

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IanB
Level 4

‎05-17-2011 06:19 AM

Thanks for replying, Riaan.  Here are the schedules

bpplsched W_CS_FS

SCHED Full 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED SyntheticFull 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 1 0 -1 0
SCHEDWIN 0 86400 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED Differential_Incremental 1 1 86400 1 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 0 0 75600 10800 75600 10800 75600 10800 75600 10800 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 1 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
------------------------------------------------------------------------
bpplsched W_RD_SYNTH2

SCHED Full 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED SynthFull 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 1 0 -1 0
SCHEDWIN 0 86400 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED Differential-Inc 1 1 86400 1 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 75600 10800 75600 10800 75600 10800 75600 10800 75600 10800 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 1 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
------------------------------------------------------------------------
bpplsched W_Synth_RDCARPARKING_FS

SCHED Full 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED SynthFull 0 1 86400 3 0 0 0 *NULL* 0 0 0 0 1 0 -1 0
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 0 0 0 86400
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

SCHED Differential_Incremental 1 1 86400 1 0 0 0 *NULL* 0 0 0 0 0 0 -1 0
SCHEDWIN 0 0 75600 10800 75600 10800 75600 10800 75600 10800 75600 10800 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 1 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*

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IanB
Level 4

‎05-17-2011 06:29 AM

1. W_CS_FS
Schedule:          Full
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       0
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

Schedule:          SyntheticFull
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       1
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  024:00:00   000:00:00  024:00:00 
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

Schedule:          Differential_Incremental
  Type:            INCR (1)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 1 (2 weeks)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     021:00:00  024:00:00   069:00:00  072:00:00 
   Wednesday   021:00:00  024:00:00   093:00:00  096:00:00 
   Thursday    021:00:00  024:00:00   117:00:00  120:00:00 
   Friday      021:00:00  024:00:00   141:00:00  144:00:00 
   Saturday    000:00:00  000:00:00
---------------------------------------------------------------------------------
2. W_SYNTH_RDCARPARKING_FS
Schedule:          Full
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       0
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

Schedule:          SynthFull
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       1
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  024:00:00   144:00:00  168:00:00 

Schedule:          Differential_Incremental
  Type:            INCR (1)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 1 (2 weeks)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      021:00:00  024:00:00   045:00:00  048:00:00 
   Tuesday     021:00:00  024:00:00   069:00:00  072:00:00 
   Wednesday   021:00:00  024:00:00   093:00:00  096:00:00 
   Thursday    021:00:00  024:00:00   117:00:00  120:00:00 
   Friday      021:00:00  024:00:00   141:00:00  144:00:00 
   Saturday    000:00:00  000:00:00
----------------------------------------------------------------
3. W_RD_SYNTH2
Schedule:          Full
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       0
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

Schedule:          SynthFull
  Type:            FULL (0)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 3 (1 month)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  Synthetic:       1
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  024:00:00   000:00:00  024:00:00 
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

Schedule:          Differential-Inc
  Type:            INCR (1)
  Frequency:       1 day(s) (86400 seconds)
  Retention Level: 1 (2 weeks)
  u-wind/o/d:      0 0
  Incr Type:       DELTA (0)
  Alt Read Host:   (none defined)
  Max Frag Size:   0 MB
  PFI Recovery:    0
  Maximum MPX:     1
  Number Copies:   1
  Fail on Error:   0
  Residence:       (specific storage unit not required)
  Volume Pool:     (same as policy volume pool)
  Server Group:    (same as specified for policy)
  Residence is Storage Lifecycle Policy:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      021:00:00  024:00:00   045:00:00  048:00:00 
   Tuesday     021:00:00  024:00:00   069:00:00  072:00:00 
   Wednesday   021:00:00  024:00:00   093:00:00  096:00:00 
   Thursday    021:00:00  024:00:00   117:00:00  120:00:00 
   Friday      021:00:00  024:00:00   141:00:00  144:00:00 
   Saturday    000:00:00  000:00:00

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Marianne
Level 6
Partner    VIP    Accredited Certified

‎05-17-2011 06:35 AM

Have a look at this post:

https://www-secure.symantec.com/connect/forums/netbackup-synthetic-full-wows#comment-5338041


Handy NetBackup Links
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RiaanBadenhorst
Moderator
Moderator
Partner    VIP    Accredited Certified

‎05-17-2011 07:35 AM

Check this one

 

http://www.symantec.com/docs/TECH70557

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IanB
Level 4

‎05-17-2011 07:41 AM

Thanks Marianne - very interesting.  My clients were set to use Change Journal (timestamp), in order to speed up incrementals.  I have changed these three back to Archive Bit and I'll let you know in another 5 weeks.  I suspect the Incrementals will now take a lot longer ploughing through the directory entries (1million - 2.5million files on these clients) to locate changed files.   Well, you can't have everything, I suppose . . .   Unless I upgrade to 7.1, of course.

I saw the post about 238 errors with Synth a month or more ago, but as we don't get any errors I didn't check all the responses and so missed the note about the bug.

Ian

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IanB
Level 4

‎05-17-2011 08:38 AM

Thanks very much Riaan.  I think I'd better upgrade to the latest release of 6.5.  I just wonder why my Googling didn't find this before (perhaps it's not public).  Maybe I'll be able to go back to Change Journal too. smiley

Kind regards,

Ian

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