Avamar: Data Domain: Kunne ikke oprette en sikkerhedskopiering af kontrolpunkt pga. forkert implementering af AVE

Forkert AVE-implementering

• Kunne ikke oprette en sikkerhedskopi af kontrolpunkt
• Alle vedligeholdelsesjob blev udført med succes
• Bekræftet forbindelse mellem Av og DD

  mccli event show | grep -i "failed to create"
  71546 2019-02-21 09:09:31 CET ERROR       31034 SYSTEM      PROCESS  /                          Failed to create a checkpoint backup.
  71229 2019-02-20 09:09:22 CET ERROR       31034 SYSTEM      PROCESS  /                          Failed to create a checkpoint backup.
  70926 2019-02-19 09:26:29 CET ERROR       31034 SYSTEM      PROCESS  /                          Failed to create a checkpoint backup.
  70340 2019-02-18 09:10:41 CET ERROR       31034 SYSTEM      PROCESS  /                          Failed to create a checkpoint backup.

• Fejl, der returneres i cpbackup-loggen for en bestemt cp på en bestemt datapartition: data07

  admin@*****:/usr/local/avamar/var/client/>: less cpbackup-cp.20190221080716-28111.log
  .
  .
  [Thu Feb 21 09:09:17 2019] Backup data07 finished in 00:00:01.
  [Thu Feb 21 09:09:17 2019] Cleanup backup for data07
  [Thu Feb 21 09:09:17 2019] Backup data07 returned with exit code 158
  [Thu Feb 21 09:09:17 2019] Execute: ps -o pid,ppid,cmd --no-headers --ppid 28226 || true
  > [Thu Feb 21 09:09:17 2019] Killing all child processes: 28226
  > [Thu Feb 21 09:09:17 2019] Killing PIDs (28226) with signal 15.
  [Thu Feb 21 09:09:17 2019] Sleeping for 10 seconds after killing processes...
  [Thu Feb 21 09:09:27 2019] Execute: ps -o pid,ppid,cmd --noheaders --pid 28226 || true
  [Thu Feb 21 09:09:27 2019] Execute output:
  28226 28111 [sh] <defunct>
  .
  .
  [Thu Feb 21 09:09:28 2019] Backup data06 finished in 00:00:12.
  [Thu Feb 21 09:09:28 2019] Cleanup backup for data06
  [Thu Feb 21 09:09:28 2019] Backup data06 returned with exit code 158
  [Thu Feb 21 09:09:28 2019] Finished backing up files in 00:00:12.
  [Thu Feb 21 09:09:28 2019] Execute: /usr/local/avamar/bin/mccli event publish --code=31034 --attribute="checkpoint" --value="
  cp.20190221080716" --attribute="logfile" --value="/space/avamar/var/client/cpbackup-cp.20190221080716-28111.log" --attribute=
  "cache" --value="OK" --attribute="data06 elapsed" --value="00:00:12" --attribute="data06 fail" --value="Exit code: 158. Signa
  l: 0." --attribute="data07 elapsed" --value="00:00:01" --attribute="data07 fail" --value="Exit code: 158. Signal: 0." --attri
  bute="max ddr streams" --value="6" --attribute="max parallel avtars" --value="2" --attribute="parallel running avtars" --valu
  e="2" --attribute="pass thru flags" --value="--id=root --ap=******** --hfsaddr=***** --hfsport=27000" --attribute="total
  elapsed time" --value="00:00:12" --attribute="volumes" --value="data01 data02 data03 data04 data05 data06 data07"
   
  [Thu Mar 22 09:10:03 2018] Execute: /usr/local/avamar/bin/mccli event publish --code=31034 --attribute="checkpoint" --value="cp.20180322150523" --attribute="logfile" --value="/data01/avamar/var/cpbackup-cp.20180322150523-34518.log" 
  --attribute="abort reason" --value="Flag --max-ddr-streams must be greater than zero" --attribute="cache" --value="OK" --attribute="max ddr streams" --value="0" --attribute="max parallel avtars" --value="2" --attribute="pass thru flags" --value="--id=root --ap=******** --hfsaddr=avamar" --attribute="volumes" --value="data01 data02 data03"
   abort reason        Flag --max-ddr-streams must be greater than zero
  [Thu Feb 21 09:09:31 2019] Execute output:
  0,23000,CLI command completed successfully.
   Attribute               Value
   ----------------------- -------------------------------------------------------------
   checkpoint              cp.20190221080716
   cache                   OK
   parallel running avtars 2
   logfile                 /space/avamar/var/client/cpbackup-cp.20190221080716-28111.log
   max ddr streams         6
   pass thru flags         --id=root --ap=******** --hfsaddr=***** --hfsport=27000
   volumes                 data01 data02 data03 data04 data05 data06 data07
   data06 fail             Exit code: 158. Signal: 0.
   total elapsed time      00:00:12
   data07 elapsed          00:00:01
   max parallel avtars     2
   data06 elapsed          00:00:12
   data07 fail             Exit code: 158. Signal: 0.

• Undersøgelse af den hændelse, der er rapporteret for cpbackup-fejl

  mccli event show --id=71546
  0,23000,CLI command completed successfully.
  Attribute   Value                                                                                                            
  ----------- ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  ID          71546
  Date        2019-02-21 09:09:31 CET
  Type        ERROR
  Code        31034
  Category    SYSTEM
  Severity    PROCESS
  Domain      /
  Summary     Failed to create a checkpoint backup.
  SW Source   MCS:BS
  For Whom    All Users
  HW Source   *****
  Description Failed to create a checkpoint backup.
  Remedy      No action required.
  Notes       N/A
  Data        <data><entry key="checkpoint" type="text" value="cp.20190221080716" version="1"/><entry key="cache" type="text" value="OK" version="1"/><entry key="parallel running avtars" type="text" value="2" version="1"/><entry key="logfile" type="text" value="/space/avamar/var/client/cpbackup-cp.20190221080716-28111.log" version="1"/><entry key="max ddr streams" type="text" value="6" version="1"/><entry key="pass thru flags" type="text" value="--id=root --ap=******** --hfsaddr=***** --hfsport=27000" version="1"/><entry key="volumes" type="text" value="data01 data02 data03 data04 data05 data06 data07" version="1"/><entry key="requestor" type="xml" value="&lt;requestor domain=&quot;/&quot; product=&quot;NONE&quot; role=&quot;Administrator&quot; user=&quot;MCUser&quot;/&gt;" version=""/><entry key="data06 fail" type="text" value="Exit code: 158. Signal: 0." version="1"/><entry key="total elapsed time" type="text" value="00:00:12" version="1"/><entry key="data07 elapsed" type="text" value="00:00:01" version="1"/><entry key="max parallel avtars" type="text" value="2" version="1"/><entry key="data06 elapsed" type="text" value="00:00:12" version="1"/><entry key="data07 fail" type="text" value="Exit code: 158. Signal: 0." version="1"/></data>

• Da du kontrollerede cpbackup-logfilen for en af de berørte datapartitioner, fandt du en meddelelse om, at serveren er skrivebeskyttet på grund af diskfuld i cpbackup-loggen for data06 og data07

  admin@*****:/usr/local/avamar/var/client/>: less cpbackup-cp.20190221080716-data06.log
  .
  .
  
  2019-02-21 09:09:16 avtar Info <5554>: Connecting to one node in each datacenter
  2019-02-21 09:09:16 avtar Info <5993>: - Connect: Connected to 172.27.7.3:29000, Priv=0, SSL Cipher=AES256-SHA
  2019-02-21 09:09:16 avtar Info <5993>: - Datacenter 0 has 1 nodes: Connected to 172.27.7.3:29000, Priv=0, SSL Cipher=AES256-SHA
  2019-02-21 09:09:16 avtar Info <42862>: - Server is in read-only mode due to diskfull
  2019-02-21 09:09:16 avtar Info <17972>: - Server is in Read-only mode.
  2019-02-21 09:09:16 avtar FATAL <8604>: Fatal server connection problem, aborting initialization. Verify correct server address and login credentials.
  2019-02-21 09:09:16 avtar FATAL <8941>: Fatal server connection problem, aborting initialization. Verify correct server address and login credentials.
  2019-02-21 09:09:16 avtar Info <6149>: Error summary: 2 errors: 8604, 8941
  2019-02-21 09:09:16 avtar Info <6645>: Not sending wrapup anywhere.
  2019-02-21 09:09:16 avtar Info <5314>: Command failed (2 errors, exit code 10008: cannot establish connection with server (possible network or DNS failure))

• Kørsel af fs-perc viser en stor forskel mellem data01 og de andre partitioner:

  avmaint nodelist |grep -i "fs-perc"
   fs-percent-full="37.0"
   fs-percent-full="8.8"
   fs-percent-full="8.7"
   fs-percent-full="8.7"
   fs-percent-full="8.8"
   fs-percent-full="8.7"
   fs-percent-full="8.7"

• Kørsel af df -h viste, at data01 havde en mindre størrelse end andre partitioner, men var 37% fulde, mens de andre var 9%

  df -h
  
  Filesystem      Size  Used Avail Use% Mounted on
  /dev/sda2        16G  5.0G   10G  34% /
  udev             18G  184K   18G   1% /dev
  tmpfs            18G     0   18G   0% /dev/shm
  /dev/sda1      1011M   91M  869M  10% /boot
  /dev/sda6       7.6G  287M  6.9G   4% /var
  /dev/sda8        62G   14G   45G  25% /space
  /dev/sdb1       250G   93G  158G  37% /data01
  /dev/sdc1       1.0T   90G  934G   9% /data02
  /dev/sdd1       1.0T   89G  935G   9% /data03
  /dev/sde1       1.0T   90G  935G   9% /data04
  /dev/sdf1       1.0T   91G  934G   9% /data05
  /dev/sdg1       1.0T   90G  935G   9% /data06
  /dev/sdh1       1.0T   90G  935G   9% /data07

Partition / data01 er 250G, mens de andre er 1 TB, så det er derfor, dens udnyttelse er højere end de andre. Vi understøtter ikke forskellige datapartitionsstørrelser i den samme AVE.

Da dette er en 4TB AVE, skal der være seks datapartitioner (1 TB hver); kilde: https://www.delltechnologies.com/asset/en-us/products/data-protection/technical-support/docu91853.pdf ("AVE virtual disk requirements," side 17)

Der er en note der på samme side:
"Fordi AVE .ova-installationen opretter tre 250 GB lagerpartitioner sammen med OS-disken, kræves der ca. 900 GB ledig diskplads ved installationen. AVE .ovf-installationen opretter dog ikke lagerpartitioner under installationen. Derfor kræves der kun nok diskplads til OS-disken ved installationen, og efterfølgende lagerpartitioner kan oprettes på andre datalagre"

Da denne AVE har syv partitioner (en af dem på 250 GB og resten 1 TB) i stedet for 6 på 1 TB, så AVE ville blive forkert implementeret.

I dette tilfælde skal kunden installere en ny 4 TB AVE (med 6 x 1 TB datapartitioner, ingen 250 GB partitioner). Repliker derefter alle deres data til det nye system.

Ny implementering vil være ansvaret for det lokale team og professionelle tjenester.