From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Tinsley Subject: [Fwd: Re: [ogfs-dev]Re: [Linux-ha-dev] Re: GFS with MD/LVM (Was: Using RAID1 SCSI disks with heartbeat)] Date: Fri, 29 Nov 2002 21:43:02 -0600 Message-ID: <3DE833C6.3000009@emageon.com> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="------------020904030303050305080305" Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com List-Id: To: reiserfs-list@namesys.com Cc: Alan Robertson --------------020904030303050305080305 Content-Type: text/plain; charset="iso-8859-1"; format="flowed" Content-Transfer-Encoding: quoted-printable Hey guys, Can someone clarify this please? -------- Original Message -------- Subject: Re: [ogfs-dev]Re: [Linux-ha-dev] Re: GFS with MD/LVM (Was:=20 Using RAID1 SCSI disks with heartbeat) Date: Fri, 29 Nov 2002 19:01:14 -0700 From: Alan Robertson Reply-To: linux-ha-dev@lists.community.tummy.com Organization: IBM Linux Technology Center To: linux-ha-dev@lists.community.tummy.com CC: Greg Freemyer , OpenGFS=20 References: <20021129211032.BZIW24110.mtiwmhc13.worldnet.att.net@TAZ2>=20 <3DE7EF45.20903@unix.sh> <20021130013240.Y25901@vestdata.no> Ragnar Kj=F8rstad wrote: > On Fri, Nov 29, 2002 at 03:50:45PM -0700, Alan Robertson wrote: >=20 >>I think EVMS has (or will have soon) r/w snapshots. >> >> >>>WIth r/w snapshots, the process can be: snapshot, clean, mount. I think= that=20 >>>could be done=20 >>>with no FS support. =20 >> >>The FS support is still preferred because the integrity of the volume is = >>still better (nothing held in cache). Some filesystems can still process= =20 >>journals on readonly filesystems. IIRC, ReiserFS does that. >=20 >=20 > I don't think so. Reiserfs had to be patched to work with lvm snapshots > as well. Originally it needed patches, but I was under the impression that those=20 patches were now in the base code. --=20 Alan Robertson=20 "Openness is the foundation and preservative of friendship.... Let me clai= m=20 from you at all times your undisguised opinions." - William Wilberforce _______________________________________________________ Linux-HA-Dev: Linux-HA-Dev@lists.community.tummy.com http://lists.community.tummy.com/mailman/listinfo/linux-ha-dev Home Page: http://linux-ha.org/ --=20 Brian Tinsley Chief Systems Engineer Emageon --------------020904030303050305080305 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Hey guys,

Can someone clarify this please?

-------- Original Message --------

Subject:	Re: [ogfs-dev]Re: [Linux-ha-dev] Re: GFS with MD/LVM (Was: Using RAID1 SCSI disks with heartbeat)
Date:	Fri, 29 Nov 2002 19:01:14 -0700
From:	Alan Robertson <alanr@unix.sh>
Reply-To:	linux-ha-dev@lists.community.tummy.com
Organization:	IBM Linux Technology Center
To:	linux-ha-dev@lists.community.tummy.com
CC:	Greg Freemyer <Greg.Freemyer@TruStorage.com>, OpenGFS <opengfs-devel@lists.sourceforge.net>
References:	<20021129211032.BZIW24110.mtiwmhc13.worldnet.att.net@TAZ2> <3DE7EF45.20903@unix.sh> <20021130013240.Y25901@vestdata.no>

Ragnar Kjørstad wrote:
> On Fri, Nov 29, 2002 at 03:50:45PM -0700, Alan Robertson wrote:
> 
>>I think EVMS has (or will have soon) r/w snapshots.
>>
>>
>>>WIth r/w snapshots, the process can be: snapshot, clean, mount.  I think that 
>>>could be done 
>>>with no FS support.  
>>
>>The FS support is still preferred because the integrity of the volume is 
>>still better (nothing held in cache).  Some filesystems can still process 
>>journals on readonly filesystems.  IIRC, ReiserFS does that.
> 
> 
> I don't think so. Reiserfs had to be patched to work with lvm snapshots
> as well.

Originally it needed patches, but I was under the impression that those 
patches were now in the base code.


-- 
     Alan Robertson 

"Openness is the foundation and preservative of friendship....  Let me claim 
from you at all times your undisguised opinions." - William Wilberforce


_______________________________________________________
Linux-HA-Dev: Linux-HA-Dev@lists.community.tummy.com
http://lists.community.tummy.com/mailman/listinfo/linux-ha-dev
Home Page: http://linux-ha.org/

-- 
Brian Tinsley
Chief Systems Engineer
Emageon

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