From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: mismatch_cnt constantly goes up on ssd+hdd raid1 Date: Thu, 25 Jun 2015 20:50:26 +0500 Message-ID: <20150625205026.42f41a81@natsu> References: <3700381434301996@web21o.yandex.ru> <20150625113335.7bf72b0b@noble> <20150625101959.23981c72@natsu> <20150625172530.5c5338b6@noble> <2762371435246396@web9o.yandex.ru> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/FgnkKYZQUTQULnFx51Vj7=l"; protocol="application/pgp-signature" Return-path: In-Reply-To: <2762371435246396@web9o.yandex.ru> Sender: linux-raid-owner@vger.kernel.org To: tlknv Cc: NeilBrown , "linux-raid@vger.kernel.org" List-Id: linux-raid.ids --Sig_/FgnkKYZQUTQULnFx51Vj7=l Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 25 Jun 2015 18:33:16 +0300 tlknv wrote: > I have just discovered that I had 'discard' mount option even though I th= ough it wasn't there :-( > After removing 'discard' and forcing 'repair' mismatch_cnt stays 0 even a= fter a bunch of writes and deletes (the most importantly) to the partition. I wouldn't recommend disabling discard 'for good' though, from your experim= ent we can probably conclude the mismatch_cnt numbers you had previously are in= deed harmless. If you had no other issues due to discard being active, then what= you did now is disable a working and useful feature to fix what's only a cosmet= ic problem. --=20 With respect, Roman --Sig_/FgnkKYZQUTQULnFx51Vj7=l Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlWMI0IACgkQTLKSvz+PZwjwvgCeMAvjBK+jVX2wWMXpTaHY9HnJ a4cAnR39F8rLsp+o2PRuHVgMG8ASLZXZ =2lh2 -----END PGP SIGNATURE----- --Sig_/FgnkKYZQUTQULnFx51Vj7=l--