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GFS2: Improve error handling in inode allocation 

A little while back, block allocation was given some improved
error handling which meant that -EIO was returned in the case
of there being a problem in the resource group data. In addition
a message is printed explaning what went wrong and how to fix it.
This extends that error handling so that it also covers inode
allocation too.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2009-07-31 16:19:40 +01:00
parent 440d6da207
commit 6050b9c74f
3 changed files with 27 additions and 13 deletions
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2
fs/gfs2/inode.c
View File

@ -731,7 +731,7 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
if (error) if (error)
goto out_ipreserv; goto out_ipreserv;
*no_addr = gfs2_alloc_di(dip, generation); error = gfs2_alloc_di(dip, no_addr, generation);
gfs2_trans_end(sdp); gfs2_trans_end(sdp);

36
fs/gfs2/rgrp.c
View File

@ -1459,6 +1459,16 @@ int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl)
return 0; return 0;
} }
static void gfs2_rgrp_error(struct gfs2_rgrpd *rgd)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
fs_warn(sdp, "rgrp %llu has an error, marking it readonly until umount\n",
(unsigned long long)rgd->rd_addr);
fs_warn(sdp, "umount on all nodes and run fsck.gfs2 to fix the error\n");
gfs2_rgrp_dump(NULL, rgd->rd_gl);
rgd->rd_flags |= GFS2_RDF_ERROR;
}
/** /**
* gfs2_alloc_block - Allocate one or more blocks * gfs2_alloc_block - Allocate one or more blocks
* @ip: the inode to allocate the block for * @ip: the inode to allocate the block for
@ -1520,22 +1530,20 @@ int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n)
return 0; return 0;
rgrp_error: rgrp_error:
fs_warn(sdp, "rgrp %llu has an error, marking it readonly until umount\n", gfs2_rgrp_error(rgd);
(unsigned long long)rgd->rd_addr);
fs_warn(sdp, "umount on all nodes and run fsck.gfs2 to fix the error\n");
gfs2_rgrp_dump(NULL, rgd->rd_gl);
rgd->rd_flags |= GFS2_RDF_ERROR;
return -EIO; return -EIO;
} }
/** /**
* gfs2_alloc_di - Allocate a dinode * gfs2_alloc_di - Allocate a dinode
* @dip: the directory that the inode is going in * @dip: the directory that the inode is going in
* @bn: the block number which is allocated
* @generation: the generation number of the inode
* *
* Returns: the block allocated * Returns: 0 on success or error
*/ */
u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation) int gfs2_alloc_di(struct gfs2_inode *dip, u64 *bn, u64 *generation)
{ {
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_alloc *al = dip->i_alloc; struct gfs2_alloc *al = dip->i_alloc;
@ -1546,12 +1554,13 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
blk = rgblk_search(rgd, rgd->rd_last_alloc, blk = rgblk_search(rgd, rgd->rd_last_alloc,
GFS2_BLKST_FREE, GFS2_BLKST_DINODE, &n); GFS2_BLKST_FREE, GFS2_BLKST_DINODE, &n);
BUG_ON(blk == BFITNOENT);
/* Since all blocks are reserved in advance, this shouldn't happen */
if (blk == BFITNOENT)
goto rgrp_error;
rgd->rd_last_alloc = blk; rgd->rd_last_alloc = blk;
block = rgd->rd_data0 + blk; block = rgd->rd_data0 + blk;
gfs2_assert_withdraw(sdp, rgd->rd_free); gfs2_assert_withdraw(sdp, rgd->rd_free);
rgd->rd_free--; rgd->rd_free--;
rgd->rd_dinodes++; rgd->rd_dinodes++;
@ -1568,7 +1577,12 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
rgd->rd_free_clone--; rgd->rd_free_clone--;
spin_unlock(&sdp->sd_rindex_spin); spin_unlock(&sdp->sd_rindex_spin);
trace_gfs2_block_alloc(dip, block, 1, GFS2_BLKST_DINODE); trace_gfs2_block_alloc(dip, block, 1, GFS2_BLKST_DINODE);
return block; *bn = block;
return 0;
rgrp_error:
gfs2_rgrp_error(rgd);
return -EIO;
} }
/** /**

2
fs/gfs2/rgrp.h
View File

@ -47,7 +47,7 @@ extern void gfs2_inplace_release(struct gfs2_inode *ip);
extern unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block); extern unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n); extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
extern u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation); extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, u64 *generation);
extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen); extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen); extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);