On Dec 22, 2017, at 10:17 AM, Theodore Ts'o <tytso@xxxxxxx> wrote: > > On Fri, Dec 22, 2017 at 02:22:44AM -0700, Andreas Dilger wrote: >> From: Shuichi Ihara <sihara@xxxxxxx> >> >> e2mmpstatus is an MMP helper utility to read status from an MMP block. >> It outputs the latest MMP updated nodename and time for the device. > > Why not include this into dumpe2fs? Maybe dumpe2fs -m to just print > the MMP information and include the MMP nodetime and time for either > the full dumpe2fs or dumpe2fs -h output? That would definitely be an option. The mmpstatus utility was written by DDN, and I'm passing it on after some code cleanup. I think it would be reasonable to include the other MMP fields into the dumpe2fs output, and then run the full MMP activity check if called with "-m" or named as "mmpstatus". I don't want dumpe2fs to be blocked on the MMP update checking all the time, since that can be slow. I'll see if I can get a patch out in the next couple of days. Cheers, Andreas
