9fans - fans of the OS Plan 9 from Bell Labs
 help / color / mirror / Atom feed
From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] fossil/venti falling down?
Date: Wed, 24 Jun 2009 20:42:50 -0400	[thread overview]
Message-ID: <d5d4c5f945ad9a5ad2029d4dbfd04298@quanstro.net> (raw)
In-Reply-To: <f75780240906241700g5e00df10ke9498406e9fe84d6@mail.gmail.com>

> Not directly related to the topic here, but this has always bugged me
> about running Venti on mirrored or raided disks.
>
> When a block on a mirrored pair doesn't match the block on its
> partner, the mirroring layer has no idea which one is right, but Venti
> does. Some way to export this read failure to it and give it a chance
> to decide which block to pick would be pretty neat.

it's even neater to use a raid level that doesn't require venti
intervention.

does venti even keep scores on the bloom filter blocks and the icache?

- erik



  reply	other threads:[~2009-06-25  0:42 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-18 16:01 John Floren
2009-06-18 16:21 ` John Floren
2009-06-18 16:25   ` erik quanstrom
2009-06-18 16:30     ` John Floren
2009-06-18 16:45       ` erik quanstrom
2009-06-18 17:10         ` John Floren
2009-06-24 17:06           ` John Floren
2009-06-21 11:57   ` Richard Miller
2009-06-21 12:12     ` Steve Simon
2009-06-21 14:11     ` erik quanstrom
2009-06-21 19:50       ` Josh Wood
2009-06-24 17:43 ` John Floren
2009-06-24 19:09   ` cinap_lenrek
2009-06-24 23:33     ` John Floren
2009-06-24 23:39       ` erik quanstrom
2009-06-25  0:00         ` Venkatesh Srinivas
2009-06-25  0:42           ` erik quanstrom [this message]
2009-06-25 16:13             ` Russ Cox
2009-06-25 16:24               ` erik quanstrom
2009-06-25 16:47                 ` Russ Cox
2009-06-25 16:51                   ` erik quanstrom
2009-06-25  0:59     ` erik quanstrom
2009-06-25 16:13       ` Russ Cox

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=d5d4c5f945ad9a5ad2029d4dbfd04298@quanstro.net \
    --to=quanstro@quanstro.net \
    --cc=9fans@9fans.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).