Messages in this thread | | | Date | Tue, 16 Jul 2002 15:38:50 -0600 (MDT) | From | Thunder from the hill <> | Subject | Re: [ANNOUNCE] Ext3 vs Reiserfs benchmarks |
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Hi,
On Tue, 16 Jul 2002, Andreas Dilger wrote: > This is all done already for both LVM and EVMS snapshots. The filesystem > (ext3, reiserfs, XFS, JFS) flushes the outstanding operations and is > frozen, the snapshot is created, and the filesystem becomes active again. > It takes a second or less.
Anyway, we could do that in parallel if we did it like that:
sync -> significant data is being written lock -> data writes stay cached, but aren't written snapshot unlock -> data is getting written now unmount the snapshout (clean it) write the modified snapshot to disk...
Regards, Thunder -- (Use http://www.ebb.org/ungeek if you can't decode) ------BEGIN GEEK CODE BLOCK------ Version: 3.12 GCS/E/G/S/AT d- s++:-- a? C++$ ULAVHI++++$ P++$ L++++(+++++)$ E W-$ N--- o? K? w-- O- M V$ PS+ PE- Y- PGP+ t+ 5+ X+ R- !tv b++ DI? !D G e++++ h* r--- y- ------END GEEK CODE BLOCK------
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