lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 26 Aug 2008 16:00:28 -0400
From:	Theodore Tso <>
To:	Andreas Dilger <>
Cc:	Karel Zak <>,,
	Eric Sandeen <>,,
Subject: Re: [PATCH] blkid: optimize dm_device_is_leaf() usage

On Tue, Aug 26, 2008 at 01:44:45PM -0600, Andreas Dilger wrote:
> On Aug 26, 2008  10:47 -0400, Theodore Ts'o wrote:
> > I don't think you mean multipath support in terms of where there are
> > multiple paths to the same physical device ala fiber channel, but
> > rather where are multiple devices which are built on each other,
> > right?  So where /dev/sda is used to create the LVM PV's, and so on,
> > right?
> No, in fact DM has actual mutliple-paths-to-the-same-device support,
> via "dm-multipath".

Well, *that* we have, as long as the parent devices are real
(non-devicemapper) devices.

So if /dev/sdc and /dev/sdg are both paths to the same filesystem, and
dm-multipath has created /dev/mapper/filesystem as the multipath
device to that filesystem, any devices with /dev/mapper have priority
over non-dm devices, so /dev/mapper/filesystem will get returned

					- Ted
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists