Displaying 3 results from an estimated 3 matches for "is_it_mag".
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is_it_magic
2008 Jul 13
9
[RFC] Improved versioned pointer algorithms
...This information can be entirely
determined from the combination of the versioned pointers and the
version tree.
* It would seem that ZFS is deeply wedded to the concept of a single,
linear chain of snapshots. No snapshots of snapshots, apparently.
http://blogs.sun.com/ahrens/entry/is_it_magic
Drawbacks of versioned pointers:
* All version info stored together for any given logical address.
This will require reading more metadata blocks as the number of
versions increases, and put more pressure on cache. How to fix: with
extents, metadata is tiny compared to data, even if...
2007 Mar 06
2
recover user error
ZFS claims that it can recover user error such as accidentally deleting of files. How does it work? Does it only work for mirrored or RAID-Z pool? What is the command to perform the task?
Also for COW, I understand that during the transaction (while data is been undated), ZFS keeps a copy of the previous data. However, once the transaction is successfully completed, isn''t it the case
2008 Jul 13
0
Fwd: [RFC] Improved versioned pointer algorithms
...This information can be entirely
determined from the combination of the versioned pointers and the
version tree.
* It would seem that ZFS is deeply wedded to the concept of a single,
linear chain of snapshots. No snapshots of snapshots, apparently.
http://blogs.sun.com/ahrens/entry/is_it_magic
Drawbacks of versioned pointers:
* All version info stored together for any given logical address.
This will require reading more metadata blocks as the number of
versions increases, and put more pressure on cache. How to fix: with
extents, metadata is tiny compared to data, even if...