> > For several times now I've seen statements on this list implying > > that a dedicated ZIL/SLOG device catching sync writes for the log, > > also allows for more streamlined writes to the pool during normal > > healthy TXG syncs, than is the case with the default ZIL located > > within the pool. > > After reading what some others have posted, I should remind that zfs > always has a ZIL (unless it is specifically disabled for testing). > If it does not have a dedicated ZIL, then it uses the disks in the > main pool to construct the ZIL. Dedicating a device to the ZIL should > not improve the pool storage layout because the pool already had a > ZIL.
Also keep in mind that if you have an SLOG (ZIL on a separate device), and then lose this SLOG (disk crash etc), you will probably lose the pool. So if you want/need SLOG, you probably want two of them in a mirror… Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 r...@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss