uuid = &((struct xfs_dir3_blk_hdr *)blk)->uuid;
break;
case XFS_ATTR3_RMT_MAGIC:
- lsn = be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn);
- uuid = &((struct xfs_attr3_rmt_hdr *)blk)->rm_uuid;
- break;
+ /*
+ * Remote attr blocks are written synchronously, rather than
+ * being logged. That means they do not contain a valid LSN
+ * (i.e. transactionally ordered) in them, and hence any time we
+ * see a buffer to replay over the top of a remote attribute
+ * block we should simply do so.
+ */
+ goto recover_immediately;
case XFS_SB_MAGIC:
lsn = be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn);
uuid = &((struct xfs_dsb *)blk)->sb_uuid;
unsigned int count;
unsigned int isize;
xfs_agblock_t length;
+ int blks_per_cluster;
+ int bb_per_cluster;
+ int cancel_count;
+ int nbufs;
+ int i;
icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
if (icl->icl_type != XFS_LI_ICREATE) {
}
/*
- * Inode buffers can be freed. Do not replay the inode initialisation as
- * we could be overwriting something written after this inode buffer was
- * cancelled.
+ * The icreate transaction can cover multiple cluster buffers and these
+ * buffers could have been freed and reused. Check the individual
+ * buffers for cancellation so we don't overwrite anything written after
+ * a cancellation.
+ */
+ blks_per_cluster = xfs_icluster_size_fsb(mp);
+ bb_per_cluster = XFS_FSB_TO_BB(mp, blks_per_cluster);
+ nbufs = length / blks_per_cluster;
+ for (i = 0, cancel_count = 0; i < nbufs; i++) {
+ xfs_daddr_t daddr;
+
+ daddr = XFS_AGB_TO_DADDR(mp, agno,
+ agbno + i * blks_per_cluster);
+ if (xlog_check_buffer_cancelled(log, daddr, bb_per_cluster, 0))
+ cancel_count++;
+ }
+
+ /*
+ * We currently only use icreate for a single allocation at a time. This
+ * means we should expect either all or none of the buffers to be
+ * cancelled. Be conservative and skip replay if at least one buffer is
+ * cancelled, but warn the user that something is awry if the buffers
+ * are not consistent.
*
- * XXX: we need to iterate all buffers and only init those that are not
- * cancelled. I think that a more fine grained factoring of
- * xfs_ialloc_inode_init may be appropriate here to enable this to be
- * done easily.
+ * XXX: This must be refined to only skip cancelled clusters once we use
+ * icreate for multiple chunk allocations.
*/
- if (xlog_check_buffer_cancelled(log,
- XFS_AGB_TO_DADDR(mp, agno, agbno), length, 0)) {
+ ASSERT(!cancel_count || cancel_count == nbufs);
+ if (cancel_count) {
+ if (cancel_count != nbufs)
+ xfs_warn(mp,
+ "WARNING: partial inode chunk cancellation, skipped icreate.");
trace_xfs_log_recover_icreate_cancel(log, icl);
return 0;
}
trace_xfs_log_recover_icreate_recover(log, icl);
- xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, length,
- be32_to_cpu(icl->icl_gen));
- return 0;
+ return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,
+ length, be32_to_cpu(icl->icl_gen));
}
STATIC void
char *ptr, *old_ptr;
int old_len;
+ /*
+ * If the transaction is empty, the header was split across this and the
+ * previous record. Copy the rest of the header.
+ */
if (list_empty(&trans->r_itemq)) {
- /* finish copying rest of trans header */
+ ASSERT(len < sizeof(struct xfs_trans_header));
+ if (len > sizeof(struct xfs_trans_header)) {
+ xfs_warn(log->l_mp, "%s: bad header length", __func__);
+ return -EIO;
+ }
+
xlog_recover_add_item(&trans->r_itemq);
ptr = (char *)&trans->r_theader +
- sizeof(xfs_trans_header_t) - len;
+ sizeof(struct xfs_trans_header) - len;
memcpy(ptr, dp, len);
return 0;
}
+
/* take the tail entry */
item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list);
ASSERT(0);
return -EIO;
}
- if (len == sizeof(xfs_trans_header_t))
+
+ if (len > sizeof(struct xfs_trans_header)) {
+ xfs_warn(log->l_mp, "%s: bad header length", __func__);
+ ASSERT(0);
+ return -EIO;
+ }
+
+ /*
+ * The transaction header can be arbitrarily split across op
+ * records. If we don't have the whole thing here, copy what we
+ * do have and handle the rest in the next record.
+ */
+ if (len == sizeof(struct xfs_trans_header))
xlog_recover_add_item(&trans->r_itemq);
memcpy(&trans->r_theader, dp, len);
return 0;
xfs_sb_has_incompat_log_feature(&log->l_mp->m_sb,
XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN)) {
xfs_warn(log->l_mp,
-"Superblock has unknown incompatible log features (0x%x) enabled.\n"
-"The log can not be fully and/or safely recovered by this kernel.\n"
-"Please recover the log on a kernel that supports the unknown features.",
+"Superblock has unknown incompatible log features (0x%x) enabled.",
(log->l_mp->m_sb.sb_features_log_incompat &
XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN));
+ xfs_warn(log->l_mp,
+"The log can not be fully and/or safely recovered by this kernel.");
+ xfs_warn(log->l_mp,
+"Please recover the log on a kernel that supports the unknown features.");
return -EINVAL;
}