Ah! I needed to issue repair to the sync_action. Thanks! mdstat looks normal. David On Sun, 18 Feb 2024 19:47:19 -0800 "C.J. Collier" <cjac@xxxxxxxxxxxxxxx> wrote: > Does the content of /proc/mdstat look interesting to you? > > On Sun, Feb 18, 2024, 17:13 Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote: > > > Hi, > > > > 在 2024/02/19 0:23, simd@xxxxxxxxxxx 写道: > > > Hello, > > > > > > I cannot get my RAID 6 array to resync. > > > > > > I'm using mdadm version v4.1. I've tried kernels 5.18.X, 6.0.X, and > > > 6.3.X on Devuan (Debian) Linux. > > > > > > % echo resync > /sys/devices/virtual/block/md127/md/sync_action > > > > > > Does nothing. > > > > > > % mdadm --assemble --update=resync /dev/md127 > > > > > > Does nothing. > > > > Please note that resync is one-time after assemble the array the first > > time, you can't resync again after the array is clean. > > > > > > > > I should see a status change to resync with mdadm > > > --detail /dev/md127 and hear some activity from the drives. > > > > > > I tried adding the verbose option, but it only lists the > > > recognizing of the drives and adding them to the array. > > > > > > The array currently has some mismatches which need to be corrected. > > > It's currently registering all devices in "active sync" status and > > > says that it is "clean". > > > > What you want is "echo check > sync_action", then "cat mismatch_cnt", > > if there are really mismatches, "echo repair > sync_action" to fix it. > > > > Thanks, > > Kuai > > > > > > > > I tried setting the flag, in misc mode, to readonly and then back to > > > readwrite but that still doesn't allow the array to be resync'd. > > > > > > In desperation, I tried unplugging one of the drives, it holds > > > most/all of the mismatches -- the SATA cable was going bad, and > > > then I touch(1)ed > > a > > > file on the FS and unmounted the FS. Although the array recognized > > > the failure of the drive, it did not start resync the array upon > > > adding the drive back into the array. > > > > > > > > > > > > > > > Any ideas how to resync the array? > > > > > > Thanks, > > > David > > > > > > . > > > > > > > > >
