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  IBM GPFS ÆÄÀϽýºÅÛ¿¡¼­ snapshot ÀÛ¼ºÀÏ : 2012/01/27 18:27
 
  • ±Û¾´ÀÌ : ÁÁÀºÁøÈ£ ( http://coffeenix.net/ )
  • Á¶È¸¼ö : 7541
          [ ÀÌÀüÈ­¸é / ¼öÁ¤ ]   ºñ¹Ð¹øÈ£ :     Àμâ¿ë È­¸é
      Á¦  ¸ñ : IBM GPFS ÆÄÀϽýºÅÛ¿¡¼­ snapshot
    ÀÛ¼ºÀÏ : 2011.12.29(¸ñ)
    ÀÛ¼ºÀÚ : ÁÁÀºÁøÈ£(truefeel, http://coffeenix.net/ )


    1. snapshot »ý¼º

     
    * Çü½Ä : mmcrsnapshot </dev/µð¹ÙÀ̽º¸í> <½º³À¼¦¸í>
     


    ÆÄÀϽýºÅÛ´ç ½º³À¼¦Àº ÃÖ´ë 31°³±îÁö Á¦ÇѵǾî ÀÖ´Ù.

     
    # mmcrsnapshot /dev/gpfs1 data1_snap1
    Writing dirty data to disk
    Quiescing all file system operations
    Writing dirty data to disk again
    Creating snapshot.
    Resuming operations.
    #
    # mmcrsnapshot /dev/gpfs1 data1_snap1 <-- °°Àº À̸§ÀÌ ÀÌ¹Ì Á¸ÀçÇؼ­ »ý¼ºÀÌ ¾ÈµÈ´Ù.
    File exists
    Snapshot directory data1_snap1 already exists.
    mmcrsnapshot: Command failed.  Examine previous error messages to determine cause.
    #
    # mmcrsnapshot /dev/gpfs1 data1_snap32 <-- ÃÖ´ë 31°³±îÁö Á¦ÇѵǾî ÀÖ´Ù.
    Cannot create a new snapshot until an existing one is deleted.
    File system "gpfs1" has a limit of 31 online snapshots.
    mmcrsnapshot: Command failed.  Examine previous error messages to determine cause.
     


    ½º³À¼¦Àº '/ÇØ´ç ÆÄÀϽýºÅÛ/.snapshots/½º³À¼¦¸í/'µð·ºÅ丮¿¡ »ý¼º(¿¹ : /data1/.snapshots/data1_snap1/)µÈ´Ù. ÀÌ µð·ºÅ丮¿Í ÆÄÀÏÀº rm¸í·ÉÀ¸·Î »èÁ¦µÇÁö ¾Ê´Â´Ù.



    2. snapshot restore

     
    * Çü½Ä : mmrestorefs </dev/µð¹ÙÀ̽º¸í> <½º³À¼¦¸í>
     


    restoreÇϱâ À§Çؼ­´Â ¹Ýµå½Ã ÆÄÀϽýºÅÛÀ» umountÇÑ ÈÄ ÁøÇàÇØ¾ß ÇÑ´Ù.

     
    # mmrestorefs /dev/gpfs1 data1_snap1
    Restore snapshot data1_snap1 complete, err = 16
    Cannot restore snapshot. "gpfs1" is mounted on 2 node(s) and in use on 2 node(s).
    mmrestorefs: Command failed.  Examine previous error messages to determine cause.
     


    umountÇÑ ÈÄ restore Çغ¸ÀÚ.

     
    # mmumount /data1
    Thu Dec 29 18:06:15 KST 2011: mmumount: Unmounting file systems ...
    # mmrestorefs /dev/gpfs1 data1_snap1
    Restoring snapshot files...
    Restore snapshot data1_snap1 complete, err = 0
    # mmmount /data1
    Thu Dec 29 18:06:46 KST 2011: mmmount: Mounting file systems ...
     

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