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cluster/gfs2/edit hexedit.c hexedit.h savemeta.c
- From: rpeterso at sourceware dot org
- To: cluster-cvs at sources dot redhat dot com
- Date: 18 Oct 2007 19:56:41 -0000
- Subject: cluster/gfs2/edit hexedit.c hexedit.h savemeta.c
CVSROOT: /cvs/cluster
Module name: cluster
Changes by: rpeterso@sourceware.org 2007-10-18 19:56:41
Modified files:
gfs2/edit : hexedit.c hexedit.h savemeta.c
Log message:
While working on bz #291551, I discovered that gfs2_edit savemeta
only saved true metadata, but we need more than that. There are
lots of blocks that are considered "data" (not metadata) by the
RG bitmaps that we still need to save. These include:
1. All the system journals (which may contain both metadata and
user data, disguised as data blocks within the journal). We
need to pick out the parts that do not contain user data.
2. The system files, such as statfs, inum, quota file, etc.
These may be helpful in debugging user problems.
3. Indirect block pointers, which may be counted as data for
accounting purposes, even though it's metadata.
4. Directory leaf blocks.
This change allows gfs2_edit to save and restore these blocks properly,
and also to print out a breakdown of a saved metadata file:
gfs2_edit printsavedmeta /tmp/gfsmeta
It also improves on the information given when a journal is dumped.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/edit/hexedit.c.diff?cvsroot=cluster&r1=1.21&r2=1.22
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/edit/hexedit.h.diff?cvsroot=cluster&r1=1.11&r2=1.12
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/gfs2/edit/savemeta.c.diff?cvsroot=cluster&r1=1.3&r2=1.4