Doesn't "writes" do what resync does ?

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Hi List,

As per my previous email, I am busy shifting a bunch of data around. I have just created a new RAID1 set, following which MD started resyncing it.

Before that completed, I started shifting data onto it. I always thought that writing data to a new array, does "exactly" what resyncing does (it has to do all the same calcs etc)

This doesn't seem to be the case:

md2 : active raid1 sdd2[1] sda2[0]
      243567616 blocks super 1.2 [2/2] [UU]
[===>.................] resync = 17.2% (41949184/243567616) finish=122.3min speed=27454K/sec

yet:

  --- Physical volume ---
  PV Name               /dev/md2
  VG Name               RAID
  PV Size               232.28 GiB / not usable 35.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              59456
  Free PE               811
  Allocated PE          58645
  PV UUID               my6BsX-cSPD-MTKK-8U0t-ULVl-MKcA-LcAW2D

All the data on here was moved from another RAID device and currently contains about 200gig of data.

Should that resync not have had more completed ?

Cheers,

Pieter
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