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;
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
- int error;
- xfs_mount_t *mp = log->l_mp;
- xfs_efi_log_item_t *efip;
- xfs_efi_log_format_t *efi_formatp;
+ int error;
+ struct xfs_mount *mp = log->l_mp;
+ struct xfs_efi_log_item *efip;
+ struct xfs_efi_log_format *efi_formatp;
efi_formatp = item->ri_buf[0].i_addr;
efip = xfs_efi_init(mp, efi_formatp->efi_nextents);
- if ((error = xfs_efi_copy_format(&(item->ri_buf[0]),
- &(efip->efi_format)))) {
+ error = xfs_efi_copy_format(&item->ri_buf[0], &efip->efi_format);
+ if (error) {
xfs_efi_item_free(efip);
return error;
}
spin_lock(&log->l_ailp->xa_lock);
/*
- * xfs_trans_ail_update() drops the AIL lock.
+ * The EFI has two references. One for the EFD and one for EFI to ensure
+ * it makes it into the AIL. Insert the EFI into the AIL directly and
+ * drop the EFI reference. Note that xfs_trans_ail_update() drops the
+ * AIL lock.
*/
xfs_trans_ail_update(log->l_ailp, &efip->efi_item, lsn);
+ xfs_efi_release(efip);
return 0;
}
/*
- * This routine is called when an efd format structure is found in
- * a committed transaction in the log. It's purpose is to cancel
- * the corresponding efi if it was still in the log. To do this
- * it searches the AIL for the efi with an id equal to that in the
- * efd format structure. If we find it, we remove the efi from the
- * AIL and free it.
+ * This routine is called when an EFD format structure is found in a committed
+ * transaction in the log. Its purpose is to cancel the corresponding EFI if it
+ * was still in the log. To do this it searches the AIL for the EFI with an id
+ * equal to that in the EFD format structure. If we find it we drop the EFD
+ * reference, which removes the EFI from the AIL and frees it.
*/
STATIC int
xlog_recover_efd_pass2(
efi_id = efd_formatp->efd_efi_id;
/*
- * Search for the efi with the id in the efd format structure
- * in the AIL.
+ * Search for the EFI with the id in the EFD format structure in the
+ * AIL.
*/
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
efip = (xfs_efi_log_item_t *)lip;
if (efip->efi_format.efi_id == efi_id) {
/*
- * xfs_trans_ail_delete() drops the
- * AIL lock.
+ * Drop the EFD reference to the EFI. This
+ * removes the EFI from the AIL and frees it.
*/
- xfs_trans_ail_delete(ailp, lip,
- SHUTDOWN_CORRUPT_INCORE);
- xfs_efi_item_free(efip);
+ spin_unlock(&ailp->xa_lock);
+ xfs_efi_release(efip);
spin_lock(&ailp->xa_lock);
break;
}
}
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
+
xfs_trans_ail_cursor_done(&cur);
spin_unlock(&ailp->xa_lock);
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;
+ }
- xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, length,
- be32_to_cpu(icl->icl_gen));
- return 0;
+ trace_xfs_log_recover_icreate_recover(log, icl);
+ 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;
* free the memory associated with it.
*/
set_bit(XFS_EFI_RECOVERED, &efip->efi_flags);
- xfs_efi_release(efip, efip->efi_format.efi_nextents);
+ xfs_efi_release(efip);
return -EIO;
}
}
for (i = 0; i < efip->efi_format.efi_nextents; i++) {
extp = &(efip->efi_format.efi_extents[i]);
- error = xfs_free_extent(tp, extp->ext_start, extp->ext_len);
+ error = xfs_trans_free_extent(tp, efdp, extp->ext_start,
+ extp->ext_len);
if (error)
goto abort_error;
- xfs_trans_log_efd_extent(tp, efdp, extp->ext_start,
- extp->ext_len);
+
}
set_bit(XFS_EFI_RECOVERED, &efip->efi_flags);
*/
STATIC int
xlog_recover_process_efis(
- struct xlog *log)
+ struct xlog *log)
{
- xfs_log_item_t *lip;
- xfs_efi_log_item_t *efip;
+ struct xfs_log_item *lip;
+ struct xfs_efi_log_item *efip;
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
/*
* Skip EFIs that we've already processed.
*/
- efip = (xfs_efi_log_item_t *)lip;
+ efip = container_of(lip, struct xfs_efi_log_item, efi_item);
if (test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)) {
lip = xfs_trans_ail_cursor_next(ailp, &cur);
continue;
return error;
}
+/*
+ * A cancel occurs when the mount has failed and we're bailing out. Release all
+ * pending EFIs so they don't pin the AIL.
+ */
+STATIC int
+xlog_recover_cancel_efis(
+ struct xlog *log)
+{
+ struct xfs_log_item *lip;
+ struct xfs_efi_log_item *efip;
+ int error = 0;
+ struct xfs_ail_cursor cur;
+ struct xfs_ail *ailp;
+
+ ailp = log->l_ailp;
+ spin_lock(&ailp->xa_lock);
+ lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
+ while (lip != NULL) {
+ /*
+ * We're done when we see something other than an EFI.
+ * There should be no EFIs left in the AIL now.
+ */
+ if (lip->li_type != XFS_LI_EFI) {
+#ifdef DEBUG
+ for (; lip; lip = xfs_trans_ail_cursor_next(ailp, &cur))
+ ASSERT(lip->li_type != XFS_LI_EFI);
+#endif
+ break;
+ }
+
+ efip = container_of(lip, struct xfs_efi_log_item, efi_item);
+
+ spin_unlock(&ailp->xa_lock);
+ xfs_efi_release(efip);
+ spin_lock(&ailp->xa_lock);
+
+ lip = xfs_trans_ail_cursor_next(ailp, &cur);
+ }
+
+ xfs_trans_ail_cursor_done(&cur);
+ spin_unlock(&ailp->xa_lock);
+ return error;
+}
+
/*
* This routine performs a transaction to null out a bad inode pointer
* in an agi unlinked inode hash bucket.
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;
}
return 0;
}
+int
+xlog_recover_cancel(
+ struct xlog *log)
+{
+ int error = 0;
+
+ if (log->l_flags & XLOG_RECOVERY_NEEDED)
+ error = xlog_recover_cancel_efis(log);
+
+ return error;
+}
#if defined(DEBUG)
/*
projects / firefly-linux-kernel-4.4.55.git / blobdiff