Oh, good point.. BTW, what should the ideal size of a journal be ? is there a general guideline to follow ? I am sort-of a newbie to ext3, any advice on choosing the journal size would be great! Thanks in advance, Mahesh --- Andreas Dilger <adilger@xxxxxxxxxxxxx> wrote: > On May 24, 2004 12:45 -0700, M K wrote: > > On a related note, wouldnt it be more efficient to > > have a single dedicated hard drive, with multiple > > partitions to store journals - one for each ext3 > > system? > > No, because then each filesystem would cause seeking > to its part of the > journal for each transaction (unless the dedicated > device was NVRAM). > In general, the writes to the journal are pure > overhead unless you > actually crash so they need to be as efficient as > possible at write time > and the complexity at recovery time is much less > critical. > > Having all of the journal writes for multiple > filesystems stream to a > single block device without any seeking is the best. > Making a larger > journal also helps a lot in the performance area, > but you can't always > afford to consume so much RAM on a system > (especially a larger journal > for each filesystem). > > > --- Andreas Dilger <adilger@xxxxxxxxxxxxx> wrote: > > > It is possible now to use an external block > device > > > for a single filesystem. > > > The on-disk format is designed to allow multiple > > > filesystems to share the > > > same device, but that has never been fully > > > implemented. > > Cheers, Andreas > -- > Andreas Dilger > http://sourceforge.net/projects/ext2resize/ > http://www-mddsp.enel.ucalgary.ca/People/adilger/ > > > _______________________________________________ > > Ext3-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ext3-users __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/ _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
