From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wout1-smtp.messagingengine.com ([64.147.123.24]) by ewsd; Sun Oct 20 09:41:08 EDT 2019 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.west.internal (Postfix) with ESMTP id CC1DE2D4 for <9front@9front.org>; Sun, 20 Oct 2019 09:41:06 -0400 (EDT) Received: from imap36 ([10.202.2.86]) by compute1.internal (MEProxy); Sun, 20 Oct 2019 09:41:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastmail.fm; h= mime-version:message-id:in-reply-to:references:date:from:to :subject:content-type:content-transfer-encoding; s=fm1; bh=cDCOH uBuSOLQEhOvL7zgQj/Toe/jv0Z2Yij6UV3pG8g=; b=Jhxn3+2EcrMeUCe1aBXu1 kHZXBD5PN7VbeYkH8TSfUzTeW5IzgBMcdzV8aWI+nGysunNLCUeaNdXgkQbtDGJT Ag72qrKAKQ/ZiUIUqO0BtORDQrGt/GUYrnRdLqbE0ZR/4z4BMEcwqTRtArTcCwrd b3XGQV6zBcptuAxBV4KS0ylOyxqBEaoAU8fZUkUyj2kn2uLejNBA9+NYi5RWoJIq 4zZGqMsJ2o8uUoBo4J4FJR2XTNIKq8Q5oXoV1dVJEV7ZlAKq38KHbMXkIMQSgmph 3za6MgpIrgCm2UHONaebdjmxy465b0l7iVwzV3bJUJqSJznJ0egb0zpJ7tXw9IVH Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=cDCOHuBuSOLQEhOvL7zgQj/Toe/jv0Z2Yij6UV3pG 8g=; b=So37IS1waNWsBM8ScHTo01uIzwXGLVIx/4fXISB2ikKnNAKDxudZmroUI 0L6tkkmROfo5/RSTRS5sucsKL/UP7wuyCWMn46HZ6D0PP4KxExqYhcUDE/t37TLM 5Omb2fwZEiCPGJBHSwTUXBrjBkOF2TKHxVVNoFWH5BuDItAGm66VD6CAaVN5RkNW dDlZRWCGXByLFvPHWK3XrkKSwM2vLvW1pf6ONGjYI54sU0PIvdkLGW9ZmFZT8AOH xCIhfeW/XJpT5vW3rUXMgIY9NslvINW7AJtM7/gv1SdlKUb2GDOhj1OpMkjxfH2X EsL5DPzPwB1BZfqCvlRlXe8Bc0QEA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedufedrkeefgdeilecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepofgfggfkjghffffhvffutgfgsehtqh ertderreejnecuhfhrohhmpedfgfhthhgrnhcuifgrrhguvghnvghrfdcuoegvvghkvggv heejsehfrghsthhmrghilhdrfhhmqeenucfrrghrrghmpehmrghilhhfrhhomhepvggvkh gvvgehjeesfhgrshhtmhgrihhlrdhfmhenucevlhhushhtvghrufhiiigvpedt X-ME-Proxy: Received: by mailuser.nyi.internal (Postfix, from userid 501) id 289B7188005C; Sun, 20 Oct 2019 09:41:06 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.1.7-360-g7dda896-fmstable-20191004v2 Mime-Version: 1.0 Message-Id: In-Reply-To: <040E9CD9-7F31-438D-BB7A-C5ECF125C780@quintile.net> References: <040E9CD9-7F31-438D-BB7A-C5ECF125C780@quintile.net> Date: Sun, 20 Oct 2019 14:40:45 +0100 From: "Ethan Gardener" To: 9front@9front.org Subject: hjfs Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable List-ID: <9front.9front.org> List-Help: X-Glyph: ➈ X-Bullshit: configuration-aware general-purpose table On Sun, Oct 20, 2019, at 10:13 AM, Steve Simon wrote: > hi all, >=20 > can anyone give me an opinion on hjfs, > i am interested in how it compares to, say, cwfs. You can use hjfs in a 1GB disk image, where 12GB is the minimum recommen= ded for cwfs because it needs several partitions. hjfs dump is very fast because it simply marks files copy-on-write. cwf= s copies files to another partition on dump. Not a big deal since cwfs n= ormally dumps at 5am. hjfs doesn't have a built-in scheduler, you'd have= to trigger dumps with cron if you want that.=20 as far as i know, hjfs tends to fragmentation, and i don't think it has = a defragmenter. cwfs dump can't fragment, and its cache can be defragmen= ted with a dump-restore cycle. > Also, i would like to know whether hjfs is ready for =E2=80=9Cproducti= on=E2=80=9D use -=20 > its manpage indicates it it exoerimental, is that still the case? I've barely used hjfs, but have heard good things about it; lots of peop= le use it. It's not like cwfs is perfect anyway; it will crash if the ca= che partition fills, potentially losing a day's work. its design makes i= t hard to determine free space in the cache. hjfs has only one partition= and can correctly compute free space. I never filled my cache, I'm quit= e a light user of disks, but did see a corrupted file once, in 10 years = use. I got it back from the dump, but didn't try to find the last good v= ersion.