Re: [FAQ-answer] Re: soft RAID5 + journalled FS + power failure =problems ?

[Stephen C. Tweedie]

Hi,

Benno Senoner writes:

 > wow, really good idea to journal to a RAID1 array !
 > 
 > do you think it is possible to to the following:
 > 
 > - N disks holding a soft RAID5  array.
 > - reserve a small partition on at least 2 disks of the array to hold a RAID1
 > array.
 > - keep the journal on this partition.

Yes.  My jfs code will eventually support this.  The main thing it is
missing right now is the ability to journal multiple devices to a
single journal: the on-disk structure is already designed with that in
mind but the code does not yet support it.

--Stephen