How to Create a VxVM Snapshot from a mirror volume

VxVM 的 Volume Instance Snapshot 功能
Require: Storage Foundation Enterprise Version

有三種方式：
* Third-mirror break-off snapshots
* Full-sized snapshots
* Space-optimized snapshots

這兒介紹的就是第一種，範例如下

# vxrpint -th -g dg1
dg dg1          default      default  27000    1253797071.15.t2000

dm dg101        c1t2d0s2     auto     65536    143283520 -
dm dg103        c1t3d0s2     auto     65536    143283520 -

v  oracle_vol   -            ENABLED  ACTIVE   83886080 SELECT    -        fsgen
pl oracle_vol-01 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg101-03     oracle_vol-01 dg101   41943040 83886080 0         c1t2d0   ENA
pl oracle_vol-02 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg103-01     oracle_vol-02 dg103   0        83886080 0         c1t3d0   ENA


1. enable FastResync
# vxsnap -g dg1 prepare oracle_vol ndcomirs=1 alloc=dg101

# vxprint -th -g dg1
v  oracle_vol   -            ENABLED  ACTIVE   83886080 SELECT    -        fsgen
pl oracle_vol-01 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg101-03     oracle_vol-01 dg101   41943040 83886080 0         c1t2d0   ENA
pl oracle_vol-02 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg103-01     oracle_vol-02 dg103   0        83886080 0         c1t3d0   ENA
dc oracle_vol_dco oracle_vol oracle_vol_dcl
v  oracle_vol_dcl -          ENABLED  ACTIVE   6304     SELECT    -        gen
pl oracle_vol_dcl-01 oracle_vol_dcl ENABLED ACTIVE 6304 CONCAT    -        RW
sd dg101-01     oracle_vol_dcl-01 dg101 125829120 6304  0         c1t2d0   ENA

2. create a break-off snapshot volume
# vxsnap -g dg1 make source=oracle_vol/newvol=SNAP-oracle_vol/plex=oracle_vol-02

# vxprint -th g dg1
v  SNAP-oracle_vol -         ENABLED  ACTIVE   83886080 ROUND     -        fsgen
pl oracle_vol-02 SNAP-oracle_vol ENABLED ACTIVE 83886080 CONCAT   -        RW
sd dg103-01     oracle_vol-02 dg103   0        83886080 0         c1t3d0   ENA
dc SNAP-oracle_vol_dco SNAP-oracle_vol SNAP-oracle_vol_dcl
v  SNAP-oracle_vol_dcl -     ENABLED  ACTIVE   6304     SELECT    -        gen
pl SNAP-oracle_vol_dcl-01 SNAP-oracle_vol_dcl ENABLED ACTIVE 6304 CONCAT - RW
sd dg103-02     SNAP-oracle_vol_dcl-01 dg103 83886080 6304 0      c1t3d0   ENA
sp oracle_vol_snp SNAP-oracle_vol SNAP-oracle_vol_dco

v  oracle_vol   -            ENABLED  ACTIVE   83886080 SELECT    -        fsgen
pl oracle_vol-01 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg101-03     oracle_vol-01 dg101   41943040 83886080 0         c1t2d0   ENA
dc oracle_vol_dco oracle_vol oracle_vol_dcl
v  oracle_vol_dcl -          ENABLED  ACTIVE   6304     SELECT    -        gen
pl oracle_vol_dcl-01 oracle_vol_dcl ENABLED ACTIVE 6304 CONCAT    -        RW
sd dg101-01     oracle_vol_dcl-01 dg101 125829120 6304  0         c1t2d0   ENA
sp SNAP-oracle_vol_snp oracle_vol oracle_vol_dco

3. check snapshot status
# vxsnap -g dg1 -xv list
NAME          DG         OBJTYPE SNAPTYPE PARENT     PARENTDG   SNAPDATE         CHANGED_DATA SYNCED_DATA
oracle_vol    dg1        vol     -        -          -          - -              - -          40G (100%)
SNAP-oracle_vol dg1      vol     fullinst oracle_vol dg1        2011/07/31 02:57 64K (0.0%)   40G (100%)


4. split dg
# vxdg split dg1 dg2 SNAP-oracle_vol

# vxprint -th
dg dg1          default      default  27000    1253797071.15.t2000
dm dg101        c1t2d0s2     auto     65536    143283520 -

v  oracle_vol   -            ENABLED  ACTIVE   83886080 SELECT    -        fsgen
pl oracle_vol-01 oracle_vol  ENABLED  ACTIVE   83886080 CONCAT    -        RW
sd dg101-03     oracle_vol-01 dg101   41943040 83886080 0         c1t2d0   ENA
dc oracle_vol_dco oracle_vol oracle_vol_dcl
v  oracle_vol_dcl -          ENABLED  ACTIVE   6304     SELECT    -        gen
pl oracle_vol_dcl-01 oracle_vol_dcl ENABLED ACTIVE 6304 CONCAT    -        RW
sd dg101-01     oracle_vol_dcl-01 dg101 125829120 6304  0         c1t2d0   ENA
sp SNAP-oracle_vol_snp oracle_vol oracle_vol_dco

dg dg2          default      default  7000     1312053225.56.t2000
dm dg103        c1t3d0s2     auto     65536    143283520 -

v  SNAP-oracle_vol -         ENABLED  ACTIVE   83886080 ROUND     -        fsgen
pl oracle_vol-02 SNAP-oracle_vol ENABLED ACTIVE 83886080 CONCAT   -        RW
sd dg103-01     oracle_vol-02 dg103   0        83886080 0         c1t3d0   ENA
dc SNAP-oracle_vol_dco SNAP-oracle_vol SNAP-oracle_vol_dcl
v  SNAP-oracle_vol_dcl -     ENABLED  ACTIVE   6304     SELECT    -        gen
pl SNAP-oracle_vol_dcl-01 SNAP-oracle_vol_dcl ENABLED ACTIVE 6304 CONCAT - RW
sd dg103-02     SNAP-oracle_vol_dcl-01 dg103 83886080 6304 0      c1t3d0   ENA
sp oracle_vol_snp SNAP-oracle_vol SNAP-oracle_vol_dco


5. join dg (snap vol refresh reattach must in the same dg)
# vxdg join dg2 dg1

6. Refresh snapshot (source vol, snapshit vol must in the same dg)
# vxsnap -g dg1 refresh SNAP-oracle_vol

7. Reattach, (source vol, snapshit vol must in the same dg)
# vxsnap -b -g dg1 reattach SNAP-oracle_vol source=oracle_vol

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VxVM Cross-Platform filesystem, linux to sparc

http://www.symantec.com/docs/TECH147697

我的實際案例
是要把 Linux 的 data, 掛到 sparc 主機

1) Linux Production SFCFS P-Vol -> clone disk (S-Vol)

2) -> another Linux VxVM dg import S-Vol -> fscdsconv to sparc
# /opt/VRTS/bin/fscdsconv -e -t os_name=SunOS -f /var/tmp/recovery_vol01 /dev/vx/rdsk/oraracdg/oradata01-vol
# vxdg deport oraracdg

3) -> Solaris Sparc VxVM import S-Vol mount -> Backup
# vxdg -Cf import oraracdg
# vxvol -g oraracdg startall
# mount -F vxfs /oradata01 /dev/vx/rdsk/oraracdg/oradata01-vol

若沒有做 fscdsconv 的話
sparc 直接 import/mount 則會出現錯誤
#/opt/VRTS/bin/mount /dev/vx/dsk/oraracdg/oradata01-vol /oradata01
> UX:vxfs mount: ERROR: V-3-20012: not a valid vxfs file system
> UX:vxfs mount: ERROR: V-3-24996: Unable to get disk layout version
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Sun Cluster 3.3 + MySQL 5.5.x problem

Sun Cluster 3.3 文件寫到，似乎只支援到 MySQL 4.X
我用到 MySQL 5.X 上果然出了些問題
似乎是 MySQL create table 的 key 換了

於是乎 Sun Cluster MySQL Agent 在 create test table 時就出現了此訊息
Feb 17 12:56:27 TPDBDSS2 SC[SUNWscmys.probe_mysql]:BDSS:mysql-rs: [ID 986150 daemon.error] check_mysql - Sql-command USE sc3_test_database; CREATE TABLE sc3_test_table ( Number int(5) NOT NULL, PRIMARY KEY (Number)) TYPE=MyISAM;COMMIT returned error (ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TYPE=MyISAM' at line 1)

debug 一番，找到 SUNWscmys/function
修改這行
for cmd in 'USE sc3_test_database; CREATE TABLE sc3_test_table ( Number int(5) NOT NULL, PRIMARY KEY (Number)) TYPE=MyISAM;COMMIT' \

把 TYPE 換成 ENGINE
for cmd in 'USE sc3_test_database; CREATE TABLE sc3_test_table ( Number int(5) NOT NULL, PRIMARY KEY (Number)) ENGINE=MyISAM;COMMIT' \


ok, work fine now

--
update: a patch release

Patch-ID# 145646-03
Keywords: oracle ha-mysql patch
Synopsis: Oracle Solaris Cluster 3.3: HA-MySQL Patch for Oracle Solaris 10
Date: Jul/11/2011

Add support for MySQL 5.X

---------------
    if (( ${MYSQL_VERSION} >= 5 ))
    then
        ENGINE="ENGINE=MyISAM"
    else
        ENGINE="TYPE=MyISAM"
    fi
---------------

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Solaris 10 Resource Management - project.cpu-cap

Solairs 10 7/08 add project.cpu-cap to limit cpu usages

add a project fraud, and assign user to this project
# projadd -U user1 user.test

change user user1 default project:
add a line to the end of /etc/user_attr
=> user1::::project=user.test

# id -p user1
uid=109(user1) gid=201(users) projid=100(user.test)

==> project.cpu-cap
==> a value of 100 means 100% of one CPU

add a project attribute:
# projmod -aK "project.cpu-cap=(priv,800,deny)" user.test => 50%
(it's a 16 cpu system)

# prctl -n project.cpu-cap -i project user.test
project: 100: user.test
NAME    PRIVILEGE       VALUE    FLAG   ACTION                       RECIPIENT
project.cpu-cap
   privileged         800       -   deny                                 -
   system          4.29G     inf   deny                                 -

# prstat -J
PROJID    NPROC  SWAP   RSS MEMORY      TIME  CPU PROJECT
100       18 7040K 8000K   0.0%   1:08:50  49% user.test  <=== 50% CPU  
  3       90 6880M 6910M    21% 168:18:24 8.5% default  
  1       25  144M  154M   0.5%  12:31:05 0.7% user.root  
  0       60  197M  203M   0.6%  41:03:22 0.0% system


move a process to a project task
# newtask -v -p user.test -c [pid]
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