Jonathan Hogg wrote:
> On 29 May 2008, at 15:51, Thomas Maier-Komor wrote:
>>> I very strongly disagree. The closest ZFS equivalent to ufsdump is
>>> send'. 'zfs send' like ufsdump has initmiate awareness of the the
>>> actual on disk layout and is an integrated part of the filesystem
>>> star is a userland archiver.
>> The man page for zfs states the following for send:
>> The format of the stream is evolving. No backwards compati-
>> bility is guaranteed. You may not be able to receive your
>> streams on future versions of ZFS.
To date, there has been one incompatibility jump, required to fix a
bug. For details, see:
>> I think this should be taken into account when considering 'zfs send'
>> for backup purposes...
> Presumably, if one is backing up to another disk, one could zfs
> receive to a pool on that disk. That way you get simple file-based
> access, full history (although it could be collapsed by deleting older
> snapshots as necessary), and no worries about stream format changes.
You can also implement different policies. For example, the backup
file system may use compression with gzip-9 while the primary uses
no compression for better interactive performance.
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