From: Andreas Klauer <Andreas.Klauer@metamorpher.de>
To: Peter Sangas <pete@wnsdev.com>
Cc: 'Ramon Hofer' <ramonhofer@bluewin.ch>, linux-raid@vger.kernel.org
Subject: Re: "bitmap" line in /proc/mdstat
Date: Fri, 14 Oct 2016 19:43:14 +0200 [thread overview]
Message-ID: <20161014174314.GA24243@metamorpher.de> (raw)
In-Reply-To: <005501d22640$fc4d6a20$f4e83e60$@wnsdev.com>
On Fri, Oct 14, 2016 at 10:32:47AM -0700, Peter Sangas wrote:
> I installed Ubuntu 16.04 and used the installer to create a RAID1 some of the mds had bitmaps and some did not.
Small ones (/boot, swap) might not get a bitmap by default.
According to the manpage it needs 100G or larger.
| -b, --bitmap=
|[...]
| When creating an array on devices which are 100G or larger,
| mdadm automatically adds an internal bitmap as it will usually
| be beneficial. This can be suppressed with --bitmap=none .
Regards
Andreas Klauer
prev parent reply other threads:[~2016-10-14 17:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-14 10:06 "bitmap" line in /proc/mdstat Ramon Hofer
2016-10-14 11:53 ` Phil Turmel
2016-10-14 12:32 ` Ramon Hofer
2016-10-14 13:59 ` Ramon Hofer
2016-10-14 14:10 ` Andreas Klauer
2016-10-14 14:23 ` Ramon Hofer
2016-10-14 16:08 ` Peter Sangas
2016-10-14 16:29 ` Ramon Hofer
2016-10-14 17:32 ` Peter Sangas
2016-10-14 17:38 ` Ramon Hofer
2016-10-14 17:43 ` Andreas Klauer [this message]
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