GFS2 fatal: filesystem consistency error on rename
This patch fixes a GFS2 problem whereby the first rename after a mount can result in a file system consistency error being flagged improperly and cause the file system to withdraw. The problem is that the rename code tries to run the rgrp list with function gfs2_blk2rgrpd before the rgrp list is guaranteed to be read in from disk. The patch makes the rename function hold the rindex glock (as the gfs2_unlink code does today) which reads in the rgrp list if need be. There were a total of three places in the rename code that improperly referenced the rgrp list without the rindex glock and this patch fixes all three. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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parent
feb47ca931
commit
46290341cd
3 changed files with 24 additions and 14 deletions
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@ -736,7 +736,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
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struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
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struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
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struct gfs2_inode *nip = NULL;
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struct gfs2_inode *nip = NULL;
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struct gfs2_sbd *sdp = GFS2_SB(odir);
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struct gfs2_sbd *sdp = GFS2_SB(odir);
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struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, };
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struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }, ri_gh;
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struct gfs2_rgrpd *nrgd;
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struct gfs2_rgrpd *nrgd;
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unsigned int num_gh;
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unsigned int num_gh;
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int dir_rename = 0;
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int dir_rename = 0;
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@ -750,6 +750,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
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return 0;
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return 0;
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}
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}
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error = gfs2_rindex_hold(sdp, &ri_gh);
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if (error)
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return error;
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if (odip != ndip) {
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if (odip != ndip) {
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error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE,
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error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE,
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@ -879,7 +882,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
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al->al_requested = sdp->sd_max_dirres;
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al->al_requested = sdp->sd_max_dirres;
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error = gfs2_inplace_reserve(ndip);
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error = gfs2_inplace_reserve_ri(ndip);
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if (error)
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if (error)
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goto out_gunlock_q;
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goto out_gunlock_q;
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@ -961,6 +964,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
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if (r_gh.gh_gl)
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if (r_gh.gh_gl)
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gfs2_glock_dq_uninit(&r_gh);
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gfs2_glock_dq_uninit(&r_gh);
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out:
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out:
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gfs2_glock_dq_uninit(&ri_gh);
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return error;
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return error;
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}
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}
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@ -1200,7 +1200,8 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *unlinked,
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* Returns: errno
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* Returns: errno
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*/
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*/
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int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line)
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int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex,
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char *file, unsigned int line)
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{
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{
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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struct gfs2_alloc *al = ip->i_alloc;
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struct gfs2_alloc *al = ip->i_alloc;
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@ -1211,12 +1212,15 @@ int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line)
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return -EINVAL;
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return -EINVAL;
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try_again:
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try_again:
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if (hold_rindex) {
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/* We need to hold the rindex unless the inode we're using is
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/* We need to hold the rindex unless the inode we're using is
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the rindex itself, in which case it's already held. */
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the rindex itself, in which case it's already held. */
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if (ip != GFS2_I(sdp->sd_rindex))
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if (ip != GFS2_I(sdp->sd_rindex))
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error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
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error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
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else if (!sdp->sd_rgrps) /* We may not have the rindex read in, so: */
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else if (!sdp->sd_rgrps) /* We may not have the rindex read
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in, so: */
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error = gfs2_ri_update_special(ip);
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error = gfs2_ri_update_special(ip);
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}
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if (error)
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if (error)
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return error;
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return error;
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@ -1227,7 +1231,7 @@ int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line)
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try to free it, and try the allocation again. */
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try to free it, and try the allocation again. */
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error = get_local_rgrp(ip, &unlinked, &last_unlinked);
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error = get_local_rgrp(ip, &unlinked, &last_unlinked);
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if (error) {
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if (error) {
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if (ip != GFS2_I(sdp->sd_rindex))
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if (hold_rindex && ip != GFS2_I(sdp->sd_rindex))
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gfs2_glock_dq_uninit(&al->al_ri_gh);
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gfs2_glock_dq_uninit(&al->al_ri_gh);
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if (error != -EAGAIN)
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if (error != -EAGAIN)
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return error;
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return error;
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@ -1269,7 +1273,7 @@ void gfs2_inplace_release(struct gfs2_inode *ip)
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al->al_rgd = NULL;
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al->al_rgd = NULL;
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if (al->al_rgd_gh.gh_gl)
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if (al->al_rgd_gh.gh_gl)
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gfs2_glock_dq_uninit(&al->al_rgd_gh);
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gfs2_glock_dq_uninit(&al->al_rgd_gh);
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if (ip != GFS2_I(sdp->sd_rindex))
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if (ip != GFS2_I(sdp->sd_rindex) && al->al_ri_gh.gh_gl)
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gfs2_glock_dq_uninit(&al->al_ri_gh);
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gfs2_glock_dq_uninit(&al->al_ri_gh);
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}
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}
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@ -39,10 +39,12 @@ static inline void gfs2_alloc_put(struct gfs2_inode *ip)
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ip->i_alloc = NULL;
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ip->i_alloc = NULL;
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}
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}
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extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file,
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extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex,
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unsigned int line);
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char *file, unsigned int line);
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#define gfs2_inplace_reserve(ip) \
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#define gfs2_inplace_reserve(ip) \
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gfs2_inplace_reserve_i((ip), __FILE__, __LINE__)
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gfs2_inplace_reserve_i((ip), 1, __FILE__, __LINE__)
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#define gfs2_inplace_reserve_ri(ip) \
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gfs2_inplace_reserve_i((ip), 0, __FILE__, __LINE__)
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extern void gfs2_inplace_release(struct gfs2_inode *ip);
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extern void gfs2_inplace_release(struct gfs2_inode *ip);
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