Messages in this thread Patch in this message | | | Subject | [GFS2] Mount problem with the GFS2 code [68/70] | From | Steven Whitehouse <> | Date | Thu, 30 Nov 2006 12:23:51 +0000 |
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>From 0da3585e1ef650d3224b4d6f9799558d1d99fa1e Mon Sep 17 00:00:00 2001 From: Srinivasa Ds <srinivasa@in.ibm.com> Date: Thu, 30 Nov 2006 15:04:55 +0530 Subject: [PATCH] [GFS2] Mount problem with the GFS2 code
While mounting the gfs2 filesystem,our test team had a problem and we got this error message. =======================================================
GFS2: fsid=: Trying to join cluster "lock_nolock", "dasde1" GFS2: fsid=dasde1.0: Joined cluster. Now mounting FS... GFS2: not a GFS2 filesystem GFS2: fsid=dasde1.0: can't read superblock: -22
========================================================================== On debugging further we found that problem is while reading the super block(gfs2_read_super) and comparing the magic number in it. When I replace the submit_bio() call(present in gfs2_read_super) with the sb_getblk() and ll_rw_block(), mount operation succeded. On further analysis we found that before calling submit_bio(), bio->bi_sector was set to "sector" variable. This "sector" variable has the same value of bh->b_blocknr(block number). Hence there is a need to multiply this valuwith (blocksize >> 9)(9 because,sector size 2^9,samething happens in ll_rw_block also, before calling submit_bio()). So I have developed the patch which solves this problem. Please let me know your comments. ================================================================
Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> --- fs/gfs2/super.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 1408c5f..3b22727 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -199,7 +199,7 @@ struct page *gfs2_read_super(struct supe return NULL; } - bio->bi_sector = sector; + bio->bi_sector = sector * (sb->s_blocksize >> 9); bio->bi_bdev = sb->s_bdev; bio_add_page(bio, page, PAGE_SIZE, 0); -- 1.4.1
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