Berkeley CSUA MOTD:Entry 49658
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2025/05/24 [General] UID:1000 Activity:popular
5/24    

2008/4/3-9 [Computer/SW/Languages/Misc, Computer/SW/OS/Solaris] UID:49658 Activity:nil
4/3     Solaris experts: I've never played with ZFS. Does it have a native
        dump command a la ufsdump?
        \_ This might be what you are looking for:
           http://preview.tinyurl.com/2xqkda [sun - bigadmin]
2025/05/24 [General] UID:1000 Activity:popular
5/24    

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2012/5/8-6/4 [Computer/SW/Unix] UID:54383 Activity:nil
5/8     Hello everyone!  This is Josh Hawn, CSUA Tech VP for Spring 2012.
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10/24  What's an easy way to see if say column 3 of a file matches a list of
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2011/7/30-8/10 [Computer/SW/Languages/Misc] UID:54148 Activity:nil 66%like:54150
7/29    Happy Sysadmin Day
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2011/5/19-7/13 [Computer/SW/Languages/Misc] UID:54115 Activity:nil
5/19    If script A runs, and calls script B ..... is it possible for me to exit\
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12/18   Campus USENET service will be terminated on 12/31.
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11/13   http://sfgate.com/cgi-bin/article.cgi?f=/n/a/2008/11/14/financial/f051352S72.DTL
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Cache (4413 bytes)
preview.tinyurl.com/2xqkda -> www.sun.com/bigadmin/content/submitted/zfsdumpd_zfsrestored.jsp
Check BigAdmin Bucks This content is submitted by a BigAdmin user. It has not been reviewed for technical accuracy by Sun Microsystems, though it may have been lightly edited to improve readability. If you find an error or would like to comment on the article, please contact the submitter or use the comment field at the bottom of the article. Community submissions may not follow Sun trademark guidelines. ZFS is a great file system, but it does not have equivalent zfsdump and zfsrestore utilities. sh scripts can save you a lot of time backing up and restoring those 100 ZFS file systems. Create_BackupSnapshotsAll destroys each existing snapshot first. The snapshot format is filesystem@today's_date, for example, tank/home/bo@20070910. If -z zfs is specified, Create_BackupSnapshots is called to create and back up a snapshot for the specified file system. If -r is specified, Create_BackupSnapshots creates and backs up a snapshot for each descendant file system. do file_prefix=GetBackupfileprefixFromSnapshot "$snapshot" if find "$DIR" | grep "${file_prefix}\." sh Example 2: Recursively back up each file system in the storage pool tank. where: * -d backup_dir specifies the directory from which to restore the file system. Without the -z option, the script restores every file system. sh script restores file systems from the disk using the zfs receive command. For each file system in each storage pool, CheckBackupNeeds checks to see if there is a backup. sh script is called to dump all the file systems to a temporary directory in case you want to roll back. For the root file system in each pool, the script destroys the descendants, then restores the root file system and its descendants using RestoreBasedonCurrentZfs. do ZFSs=zfs list -t filesystem -o name -r $zfs | grep -vw NAME zfs destroy -r $zfs RestoreBasedonCurrentZfs done RestoreBasedonCurrentZfs calls RestoreSingleCurrentZfs to restore a file system and its descendants. The root file system is not restored back to its original place, because whenever a pool is created, a corresponding root file system is created for it. So a good practice is to not put anything in the root file system except for creating the file system in it. For a file system, for example, tank/home/bo, GetBackupfileprefixFromZfsname gets the backup file's prefix (tank_home_bo). Then the script looks for the backup file using the file prefix, and it restores the backup snapshot. RestoreSingleCurrentZfs () { each_zfs=$1 if echo $POOLS | grep -w $each_zfs > /dev/null; then echo "Warning: $each_zfs is not allowed to restore. You may use zfs receive $each_zfs/xxx" else file_prefix=GetBackupfileprefixFromZfsname $each_zfs BACKUPSNAPSHOT=find "$DIR" | grep "$file_prefix\." then echo "$each_zfs is restored from $BACKUPSNAPSHOT" fi fi } If -z zfs is specified, we need to identify some illegal file systems, for example, /tank/home/bo and tank/home/bo. sh -d $DIRTMP -r -z $zfs zfs destroy -r $zfs if RestoreBasedonCurrentZfss; then echo "\nYou may empty $DIRTMP after checking the restoration." fi else RestoreBasedonBackupZfss $zfs fi else RestoreBasedonBackupZfss first gets the backup file prefix for the file system, for example, tank_home_bo. If there is no backup file, the script displays an error and exits. RestoreBasedonBackupZfss () { file_prefix=GetBackupfileprefixFromZfsname $1 if find "$DIR" | egrep "${file_prefix}_|${file_prefix}\." do zfsname=GetZfsnameFromSnapshot $snapshot if zfs receive $zfsname < "$snapshot"; The file system cannot be destroyed, because it might have descendants. After the file system is restored, its descendants are renamed back under it, for example, from tank/home_$pid. The variable zfs_c makes sure that only those immediate descendants of tank/home_$pid, for example, tank/home/bo, are renamed. This is because sub-immediate descendants, for example, tank/home/bo/projects, are automatically renamed. If a descendant file system has exactly one more field than the parent file system has, it is the immediate descendant file system. pid=$$ zfs rename $zfs ${zfs}_$pid RestoreSingleCurrentZfs $zfs zfs_c=echo $zfs | nawk -F'/' '{print NF}' zfs_c=expr $zfs_c + 1 for zpid in zfs list -t filesystem -o name -r ${zfs}_$pid | grep ${zfs}_${pid}/; sh Example 2: Recursively restore each file system in the storage pool tank. sh -z tank/home Example 5: Restore the file systems without making a temporary backup.