| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: regarding journaling mode |
| From: | rakesh patel <patelrakeshcomp@xxxxxxxxx> |
| Date: | Tue, 7 Jul 2015 08:21:16 +0530 |
| Cc: | <xfs@xxxxxxxxxxx> |
| Delivered-to: | xfs@xxxxxxxxxxx |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:mime-version:to:cc:from:subject:date:in-reply-to :references:content-type; bh=mhj8xlvC9qQ8AhFQqAlV4Um1FwC3tsw6aOwh1r9hhEI=; b=aVmLiNEOukWwXF/TLGS92sOpZGQIQgvCEpzUsmC84SaMAioZCIXss080KJrC/KjV2a SeFcaRQ6OUDTf6b11uGBX+Sp7U9raDxa/wvevNuI9HkclX2JeTW4b7ym4WNp6zZoB9xy vKj8n72dwE3noika4qmExNWnuHTa7eMQ2fBsmKyaJy8e6Psmt2wcigPVTF2CaiDb8qLN rfO3lmWJ2xIFpNHH7dAwrvRjSzFsQmoZY2KTgYOev2erc44EnTMLOBOtXVJgAgWzvhwX fov2DQdXrybtA6W4cuBJy/rfBwGiISkG4ug5S4VjIow6V8NdLG1/tkrsKIJdjWryusSf Mj0A== |
| In-reply-to: | <20150707002430.GV7943@dastard> |
| References: | <CAMcfJ7vDCNo138qnUJ8O0ZDYxgh9k8rgFUoTN3mKcY-SiMWrzA@xxxxxxxxxxxxxx> <20150707002430.GV7943@dastard> |
|
How metadata is committed only after data? Is there any other file system feature? Because write back mode does not preserve it? Rakesh From: Dave Chinner Sent: â07-â07-â2015 05:59 To: Rakesh Patel Cc: xfs@xxxxxxxxxxx Subject: Re: regarding journaling mode > Hi, > > I come to know XFS is using writeback journaling mode. Can you explain how you came to that conclusion? > As per the > journaling guide, writeback is unsafe which does not preserve data and > metadata write synchronization. What journalling guide would that be? Please quote your sources when asking questions. > I really want to know reason behind to choose writeback mode for journaling > in XFS. Metadata updates after data IO completion are used instead of ordering data writeback operations through the journal. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [PATCH RFC] xfs: handle torn writes during log head/tail discovery, Dave Chinner |
|---|---|
| Next by Date: | Re: xfs_iext_realloc_indirect and "XFS: possible memory allocation deadlock", Christoph Hellwig |
| Previous by Thread: | Re: regarding journaling mode, Dave Chinner |
| Next by Thread: | RE: regarding journaling mode, rakesh patel |
| Indexes: | [Date] [Thread] [Top] [All Lists] |