Is there a way to get usage statistics on the journal device? We are testing battery-backed NVRAM cards with extremely busy 1.7TB filesystems (mode data=journal) and we need to figure out what size NVRAM card we need. I assume the journal size depends on how much writing you are doing and we can do simple theoretical calculations (writing 2.5MB/s, 60 seconds of journal would be max 150MB), but those numbers are probably off, maybe even completely wrong given the assumption. Is there a way to check to exactly how much of the journal is waiting to be flushed to disk at any given time? Is there a way to get I/O statistics of data in and out of the journal? Honestly, I can't really find any information on how to get *any* stats on the journal device. Thank you for any information, Philip * Philip Molter * Texas.Net Internet * http://www.texas.net/ * philip@xxxxxxxxx _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
