Having a separate intent log on good hardware will not prevent corruption on a pool with bad hardware. By "good" I mean hardware that correctly flush their write caches when requested.
Note, a pool is always consistent (again when using good hardware). The function of the intent log is not to provide consistency (like a journal), but to speed up synchronous requests like fsync and O_DSYNC. Neil. On 02/13/09 06:29, Jiawei Zhao wrote:
While mobility could be lost, usb storage still has the advantage of being cheap and easy to install comparing to install internal disks on pc, so if I just want to use it to provide zfs storage space for home file server, can a small intent log located on internal sata disk prevent the pool corruption caused by a power cut?
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