From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: Understanding raid array status: Active vs Clean Date: Thu, 29 May 2014 16:06:23 +1000 Message-ID: <20140529160623.5b9e37e5@notabene.brown> References: <20140529151658.3bfc97e5@notabene.brown> <1C901CF6-75BD-4B54-9F5D-7E2C35633CBC@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/6bU0QKe/ojBhQrzS=o/I788"; protocol="application/pgp-signature" Return-path: In-Reply-To: <1C901CF6-75BD-4B54-9F5D-7E2C35633CBC@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: forumscollective@gmail.com Cc: "linux-raid@vger.kernel.org" List-Id: linux-raid.ids --Sig_/6bU0QKe/ojBhQrzS=o/I788 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 29 May 2014 07:52:02 +0200 forumscollective@gmail.com wrote: > > I doubt there is a difference between Ubuntu and Arch here. > >=20 > > The array should show "active" in "mdadm --detail" output for 200ms aft= er the > > last write, and then switch to 'clean'. > > So if you are writing every 100ms, it will always say "active". > >=20 > > NeilBrown >=20 > For some reason this array has never shown Clean status, only Active. >=20 > It isn't written to other than when NFS mounted for adding new content. >=20 > Any idea what would cause constant writing - I presume from what I see th= at the initial array sync completed?-- Hmmm... Do the numbers in /proc/diskstats change? watch -d 'grep md0 /proc/diskstats' What is in /sys/block/md0/md/safe_mode_delay? What if you change that to a different number (it is in seconds and can be fractional)? What kernel version (uname -a)? NeilBrown --Sig_/6bU0QKe/ojBhQrzS=o/I788 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBU4bOXznsnt1WYoG5AQLWWRAAt1QA3koccB1sBwE2gZt3Qom4JigXLMYy J9mQQ4r7eL2XoeSxKfrv4TLpei1Y7UT5LWz1zkIFXvRCBio+BbEqfKQU77hdfIJW 18fvjAJZ8dhsY8nDs6Ynslddcq0LCc7WNno9cWtTWaAXqZbDpplCBAVt00Ayv3b+ zFL5NfbPaNyMd3JMeLRBJAIrYNUsnvUPCxpA6TsR6Kp/MkmH6eVHvpu1IVS2l9Sg kRFqL7odoGb4SCR/dRHmT3tkm1ciI2H+Nvx6a0PmXT/EmqoU28WpXOTJdUfY+ve4 ajgN9ILiRB2BxZgzwSrZuQQluI5b2rCAGmUPM6sSkTLUHKaPhXoO+LUBWYsCyIZI difP6V0VQP6IbPXd+PyyhWgO+AZHzn+1CRhYUK6H2Kvxh/TbEAe7F1+PpCDjzsLS oaT+0SIyFdQsmd9rNBEVu2PnYUYVjq2KmFaAYJnhbRVQDLWE0E2sPHiWZzE3Gkv1 BYwSTUBpBeX8abrdo6g3oFoXDB4PcpwNtdG91KuS+lhk4veqrTyEwuJmYBYu5Y6F P3mSA2GC8ucdsn+cTkh2EdVV/j9PRbaGj7SHOjNfQkqbHVr0Cos8EVo5QzbpZvBA q/KLRDGnes+kFDg7UzxBJ/+xOLYzjH2juckqhEFM/tYTiXQkKCJHPqGE0QLAo3FG 2V/2MZ8nTDc= =8Wl0 -----END PGP SIGNATURE----- --Sig_/6bU0QKe/ojBhQrzS=o/I788--