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Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
-rw-r--r--fs/xfs/xfs_log_recover.c407
1 files changed, 353 insertions, 54 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 7681b19aa5d..7c0c1fdc728 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -17,7 +17,7 @@
*/
#include "xfs.h"
#include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_format.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
@@ -41,7 +41,6 @@
#include "xfs_extfree_item.h"
#include "xfs_trans_priv.h"
#include "xfs_quota.h"
-#include "xfs_utils.h"
#include "xfs_cksum.h"
#include "xfs_trace.h"
#include "xfs_icache.h"
@@ -51,10 +50,12 @@
#include "xfs_symlink.h"
#include "xfs_da_btree.h"
#include "xfs_dir2_format.h"
-#include "xfs_dir2_priv.h"
+#include "xfs_dir2.h"
#include "xfs_attr_leaf.h"
#include "xfs_attr_remote.h"
+#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1)
+
STATIC int
xlog_find_zeroed(
struct xlog *,
@@ -607,7 +608,7 @@ out:
/*
* Head is defined to be the point of the log where the next log write
- * write could go. This means that incomplete LR writes at the end are
+ * could go. This means that incomplete LR writes at the end are
* eliminated when calculating the head. We aren't guaranteed that previous
* LR have complete transactions. We only know that a cycle number of
* current cycle number -1 won't be present in the log if we start writing
@@ -963,6 +964,7 @@ xlog_find_tail(
}
if (!found) {
xfs_warn(log->l_mp, "%s: couldn't find sync record", __func__);
+ xlog_put_bp(bp);
ASSERT(0);
return XFS_ERROR(EIO);
}
@@ -1144,7 +1146,8 @@ xlog_find_zeroed(
*/
xfs_warn(log->l_mp,
"Log inconsistent or not a log (last==0, first!=1)");
- return XFS_ERROR(EINVAL);
+ error = XFS_ERROR(EINVAL);
+ goto bp_err;
}
/* we have a partially zeroed log */
@@ -1766,19 +1769,11 @@ xlog_recover_buffer_pass1(
/*
* Check to see whether the buffer being recovered has a corresponding
- * entry in the buffer cancel record table. If it does then return 1
- * so that it will be cancelled, otherwise return 0. If the buffer is
- * actually a buffer cancel item (XFS_BLF_CANCEL is set), then decrement
- * the refcount on the entry in the table and remove it from the table
- * if this is the last reference.
- *
- * We remove the cancel record from the table when we encounter its
- * last occurrence in the log so that if the same buffer is re-used
- * again after its last cancellation we actually replay the changes
- * made at that point.
+ * entry in the buffer cancel record table. If it is, return the cancel
+ * buffer structure to the caller.
*/
-STATIC int
-xlog_check_buffer_cancelled(
+STATIC struct xfs_buf_cancel *
+xlog_peek_buffer_cancelled(
struct xlog *log,
xfs_daddr_t blkno,
uint len,
@@ -1787,22 +1782,16 @@ xlog_check_buffer_cancelled(
struct list_head *bucket;
struct xfs_buf_cancel *bcp;
- if (log->l_buf_cancel_table == NULL) {
- /*
- * There is nothing in the table built in pass one,
- * so this buffer must not be cancelled.
- */
+ if (!log->l_buf_cancel_table) {
+ /* empty table means no cancelled buffers in the log */
ASSERT(!(flags & XFS_BLF_CANCEL));
- return 0;
+ return NULL;
}
- /*
- * Search for an entry in the cancel table that matches our buffer.
- */
bucket = XLOG_BUF_CANCEL_BUCKET(log, blkno);
list_for_each_entry(bcp, bucket, bc_list) {
if (bcp->bc_blkno == blkno && bcp->bc_len == len)
- goto found;
+ return bcp;
}
/*
@@ -1810,9 +1799,32 @@ xlog_check_buffer_cancelled(
* that the buffer is NOT cancelled.
*/
ASSERT(!(flags & XFS_BLF_CANCEL));
- return 0;
+ return NULL;
+}
+
+/*
+ * If the buffer is being cancelled then return 1 so that it will be cancelled,
+ * otherwise return 0. If the buffer is actually a buffer cancel item
+ * (XFS_BLF_CANCEL is set), then decrement the refcount on the entry in the
+ * table and remove it from the table if this is the last reference.
+ *
+ * We remove the cancel record from the table when we encounter its last
+ * occurrence in the log so that if the same buffer is re-used again after its
+ * last cancellation we actually replay the changes made at that point.
+ */
+STATIC int
+xlog_check_buffer_cancelled(
+ struct xlog *log,
+ xfs_daddr_t blkno,
+ uint len,
+ ushort flags)
+{
+ struct xfs_buf_cancel *bcp;
+
+ bcp = xlog_peek_buffer_cancelled(log, blkno, len, flags);
+ if (!bcp)
+ return 0;
-found:
/*
* We've go a match, so return 1 so that the recovery of this buffer
* is cancelled. If this buffer is actually a buffer cancel log
@@ -1947,6 +1959,104 @@ xlog_recover_do_inode_buffer(
}
/*
+ * V5 filesystems know the age of the buffer on disk being recovered. We can
+ * have newer objects on disk than we are replaying, and so for these cases we
+ * don't want to replay the current change as that will make the buffer contents
+ * temporarily invalid on disk.
+ *
+ * The magic number might not match the buffer type we are going to recover
+ * (e.g. reallocated blocks), so we ignore the xfs_buf_log_format flags. Hence
+ * extract the LSN of the existing object in the buffer based on it's current
+ * magic number. If we don't recognise the magic number in the buffer, then
+ * return a LSN of -1 so that the caller knows it was an unrecognised block and
+ * so can recover the buffer.
+ */
+static xfs_lsn_t
+xlog_recover_get_buf_lsn(
+ struct xfs_mount *mp,
+ struct xfs_buf *bp)
+{
+ __uint32_t magic32;
+ __uint16_t magic16;
+ __uint16_t magicda;
+ void *blk = bp->b_addr;
+
+ /* v4 filesystems always recover immediately */
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ goto recover_immediately;
+
+ magic32 = be32_to_cpu(*(__be32 *)blk);
+ switch (magic32) {
+ case XFS_ABTB_CRC_MAGIC:
+ case XFS_ABTC_CRC_MAGIC:
+ case XFS_ABTB_MAGIC:
+ case XFS_ABTC_MAGIC:
+ case XFS_IBT_CRC_MAGIC:
+ case XFS_IBT_MAGIC:
+ return be64_to_cpu(
+ ((struct xfs_btree_block *)blk)->bb_u.s.bb_lsn);
+ case XFS_BMAP_CRC_MAGIC:
+ case XFS_BMAP_MAGIC:
+ return be64_to_cpu(
+ ((struct xfs_btree_block *)blk)->bb_u.l.bb_lsn);
+ case XFS_AGF_MAGIC:
+ return be64_to_cpu(((struct xfs_agf *)blk)->agf_lsn);
+ case XFS_AGFL_MAGIC:
+ return be64_to_cpu(((struct xfs_agfl *)blk)->agfl_lsn);
+ case XFS_AGI_MAGIC:
+ return be64_to_cpu(((struct xfs_agi *)blk)->agi_lsn);
+ case XFS_SYMLINK_MAGIC:
+ return be64_to_cpu(((struct xfs_dsymlink_hdr *)blk)->sl_lsn);
+ case XFS_DIR3_BLOCK_MAGIC:
+ case XFS_DIR3_DATA_MAGIC:
+ case XFS_DIR3_FREE_MAGIC:
+ return be64_to_cpu(((struct xfs_dir3_blk_hdr *)blk)->lsn);
+ case XFS_ATTR3_RMT_MAGIC:
+ return be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn);
+ case XFS_SB_MAGIC:
+ return be64_to_cpu(((struct xfs_sb *)blk)->sb_lsn);
+ default:
+ break;
+ }
+
+ magicda = be16_to_cpu(((struct xfs_da_blkinfo *)blk)->magic);
+ switch (magicda) {
+ case XFS_DIR3_LEAF1_MAGIC:
+ case XFS_DIR3_LEAFN_MAGIC:
+ case XFS_DA3_NODE_MAGIC:
+ return be64_to_cpu(((struct xfs_da3_blkinfo *)blk)->lsn);
+ default:
+ break;
+ }
+
+ /*
+ * We do individual object checks on dquot and inode buffers as they
+ * have their own individual LSN records. Also, we could have a stale
+ * buffer here, so we have to at least recognise these buffer types.
+ *
+ * A notd complexity here is inode unlinked list processing - it logs
+ * the inode directly in the buffer, but we don't know which inodes have
+ * been modified, and there is no global buffer LSN. Hence we need to
+ * recover all inode buffer types immediately. This problem will be
+ * fixed by logical logging of the unlinked list modifications.
+ */
+ magic16 = be16_to_cpu(*(__be16 *)blk);
+ switch (magic16) {
+ case XFS_DQUOT_MAGIC:
+ case XFS_DINODE_MAGIC:
+ goto recover_immediately;
+ default:
+ break;
+ }
+
+ /* unknown buffer contents, recover immediately */
+
+recover_immediately:
+ return (xfs_lsn_t)-1;
+
+}
+
+/*
* Validate the recovered buffer is of the correct type and attach the
* appropriate buffer operations to them for writeback. Magic numbers are in a
* few places:
@@ -1955,7 +2065,7 @@ xlog_recover_do_inode_buffer(
* inside a struct xfs_da_blkinfo at the start of the buffer.
*/
static void
-xlog_recovery_validate_buf_type(
+xlog_recover_validate_buf_type(
struct xfs_mount *mp,
struct xfs_buf *bp,
xfs_buf_log_format_t *buf_f)
@@ -2234,7 +2344,7 @@ xlog_recover_do_reg_buffer(
* just avoid the verification stage for non-crc filesystems
*/
if (xfs_sb_version_hascrc(&mp->m_sb))
- xlog_recovery_validate_buf_type(mp, bp, buf_f);
+ xlog_recover_validate_buf_type(mp, bp, buf_f);
}
/*
@@ -2366,7 +2476,7 @@ xfs_qm_dqcheck(
/*
* Perform a dquot buffer recovery.
- * Simple algorithm: if we have found a QUOTAOFF logitem of the same type
+ * Simple algorithm: if we have found a QUOTAOFF log item of the same type
* (ie. USR or GRP), then just toss this buffer away; don't recover it.
* Else, treat it as a regular buffer and do recovery.
*/
@@ -2425,20 +2535,22 @@ xlog_recover_do_dquot_buffer(
* over the log during recovery. During the first we build a table of
* those buffers which have been cancelled, and during the second we
* only replay those buffers which do not have corresponding cancel
- * records in the table. See xlog_recover_do_buffer_pass[1,2] above
+ * records in the table. See xlog_recover_buffer_pass[1,2] above
* for more details on the implementation of the table of cancel records.
*/
STATIC int
xlog_recover_buffer_pass2(
struct xlog *log,
struct list_head *buffer_list,
- struct xlog_recover_item *item)
+ struct xlog_recover_item *item,
+ xfs_lsn_t current_lsn)
{
xfs_buf_log_format_t *buf_f = item->ri_buf[0].i_addr;
xfs_mount_t *mp = log->l_mp;
xfs_buf_t *bp;
int error;
uint buf_flags;
+ xfs_lsn_t lsn;
/*
* In this pass we only want to recover all the buffers which have
@@ -2463,10 +2575,17 @@ xlog_recover_buffer_pass2(
error = bp->b_error;
if (error) {
xfs_buf_ioerror_alert(bp, "xlog_recover_do..(read#1)");
- xfs_buf_relse(bp);
- return error;
+ goto out_release;
}
+ /*
+ * recover the buffer only if we get an LSN from it and it's less than
+ * the lsn of the transaction we are replaying.
+ */
+ lsn = xlog_recover_get_buf_lsn(mp, bp);
+ if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0)
+ goto out_release;
+
if (buf_f->blf_flags & XFS_BLF_INODE_BUF) {
error = xlog_recover_do_inode_buffer(mp, item, bp, buf_f);
} else if (buf_f->blf_flags &
@@ -2476,7 +2595,7 @@ xlog_recover_buffer_pass2(
xlog_recover_do_reg_buffer(mp, item, bp, buf_f);
}
if (error)
- return XFS_ERROR(error);
+ goto out_release;
/*
* Perform delayed write on the buffer. Asynchronous writes will be
@@ -2505,6 +2624,7 @@ xlog_recover_buffer_pass2(
xfs_buf_delwri_queue(bp, buffer_list);
}
+out_release:
xfs_buf_relse(bp);
return error;
}
@@ -2513,7 +2633,8 @@ STATIC int
xlog_recover_inode_pass2(
struct xlog *log,
struct list_head *buffer_list,
- struct xlog_recover_item *item)
+ struct xlog_recover_item *item,
+ xfs_lsn_t current_lsn)
{
xfs_inode_log_format_t *in_f;
xfs_mount_t *mp = log->l_mp;
@@ -2593,6 +2714,20 @@ xlog_recover_inode_pass2(
}
/*
+ * If the inode has an LSN in it, recover the inode only if it's less
+ * than the lsn of the transaction we are replaying.
+ */
+ if (dip->di_version >= 3) {
+ xfs_lsn_t lsn = be64_to_cpu(dip->di_lsn);
+
+ if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) {
+ trace_xfs_log_recover_inode_skip(log, in_f);
+ error = 0;
+ goto out_release;
+ }
+ }
+
+ /*
* di_flushiter is only valid for v1/2 inodes. All changes for v3 inodes
* are transactional and if ordering is necessary we can determine that
* more accurately by the LSN field in the V3 inode core. Don't trust
@@ -2781,6 +2916,8 @@ write_inode_buffer:
ASSERT(bp->b_target->bt_mount == mp);
bp->b_iodone = xlog_recover_iodone;
xfs_buf_delwri_queue(bp, buffer_list);
+
+out_release:
xfs_buf_relse(bp);
error:
if (need_free)
@@ -2822,7 +2959,8 @@ STATIC int
xlog_recover_dquot_pass2(
struct xlog *log,
struct list_head *buffer_list,
- struct xlog_recover_item *item)
+ struct xlog_recover_item *item,
+ xfs_lsn_t current_lsn)
{
xfs_mount_t *mp = log->l_mp;
xfs_buf_t *bp;
@@ -2896,6 +3034,19 @@ xlog_recover_dquot_pass2(
return XFS_ERROR(EIO);
}
+ /*
+ * If the dquot has an LSN in it, recover the dquot only if it's less
+ * than the lsn of the transaction we are replaying.
+ */
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddq;
+ xfs_lsn_t lsn = be64_to_cpu(dqb->dd_lsn);
+
+ if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) {
+ goto out_release;
+ }
+ }
+
memcpy(ddq, recddq, item->ri_buf[1].i_len);
if (xfs_sb_version_hascrc(&mp->m_sb)) {
xfs_update_cksum((char *)ddq, sizeof(struct xfs_dqblk),
@@ -2906,9 +3057,10 @@ xlog_recover_dquot_pass2(
ASSERT(bp->b_target->bt_mount == mp);
bp->b_iodone = xlog_recover_iodone;
xfs_buf_delwri_queue(bp, buffer_list);
- xfs_buf_relse(bp);
- return (0);
+out_release:
+ xfs_buf_relse(bp);
+ return 0;
}
/*
@@ -3116,6 +3268,106 @@ xlog_recover_free_trans(
kmem_free(trans);
}
+STATIC void
+xlog_recover_buffer_ra_pass2(
+ struct xlog *log,
+ struct xlog_recover_item *item)
+{
+ struct xfs_buf_log_format *buf_f = item->ri_buf[0].i_addr;
+ struct xfs_mount *mp = log->l_mp;
+
+ if (xlog_peek_buffer_cancelled(log, buf_f->blf_blkno,
+ buf_f->blf_len, buf_f->blf_flags)) {
+ return;
+ }
+
+ xfs_buf_readahead(mp->m_ddev_targp, buf_f->blf_blkno,
+ buf_f->blf_len, NULL);
+}
+
+STATIC void
+xlog_recover_inode_ra_pass2(
+ struct xlog *log,
+ struct xlog_recover_item *item)
+{
+ struct xfs_inode_log_format ilf_buf;
+ struct xfs_inode_log_format *ilfp;
+ struct xfs_mount *mp = log->l_mp;
+ int error;
+
+ if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) {
+ ilfp = item->ri_buf[0].i_addr;
+ } else {
+ ilfp = &ilf_buf;
+ memset(ilfp, 0, sizeof(*ilfp));
+ error = xfs_inode_item_format_convert(&item->ri_buf[0], ilfp);
+ if (error)
+ return;
+ }
+
+ if (xlog_peek_buffer_cancelled(log, ilfp->ilf_blkno, ilfp->ilf_len, 0))
+ return;
+
+ xfs_buf_readahead(mp->m_ddev_targp, ilfp->ilf_blkno,
+ ilfp->ilf_len, &xfs_inode_buf_ra_ops);
+}
+
+STATIC void
+xlog_recover_dquot_ra_pass2(
+ struct xlog *log,
+ struct xlog_recover_item *item)
+{
+ struct xfs_mount *mp = log->l_mp;
+ struct xfs_disk_dquot *recddq;
+ struct xfs_dq_logformat *dq_f;
+ uint type;
+
+
+ if (mp->m_qflags == 0)
+ return;
+
+ recddq = item->ri_buf[1].i_addr;
+ if (recddq == NULL)
+ return;
+ if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot))
+ return;
+
+ type = recddq->d_flags & (XFS_DQ_USER | XFS_DQ_PROJ | XFS_DQ_GROUP);
+ ASSERT(type);
+ if (log->l_quotaoffs_flag & type)
+ return;
+
+ dq_f = item->ri_buf[0].i_addr;
+ ASSERT(dq_f);
+ ASSERT(dq_f->qlf_len == 1);
+
+ xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno,
+ XFS_FSB_TO_BB(mp, dq_f->qlf_len), NULL);
+}
+
+STATIC void
+xlog_recover_ra_pass2(
+ struct xlog *log,
+ struct xlog_recover_item *item)
+{
+ switch (ITEM_TYPE(item)) {
+ case XFS_LI_BUF:
+ xlog_recover_buffer_ra_pass2(log, item);
+ break;
+ case XFS_LI_INODE:
+ xlog_recover_inode_ra_pass2(log, item);
+ break;
+ case XFS_LI_DQUOT:
+ xlog_recover_dquot_ra_pass2(log, item);
+ break;
+ case XFS_LI_EFI:
+ case XFS_LI_EFD:
+ case XFS_LI_QUOTAOFF:
+ default:
+ break;
+ }
+}
+
STATIC int
xlog_recover_commit_pass1(
struct xlog *log,
@@ -3155,15 +3407,18 @@ xlog_recover_commit_pass2(
switch (ITEM_TYPE(item)) {
case XFS_LI_BUF:
- return xlog_recover_buffer_pass2(log, buffer_list, item);
+ return xlog_recover_buffer_pass2(log, buffer_list, item,
+ trans->r_lsn);
case XFS_LI_INODE:
- return xlog_recover_inode_pass2(log, buffer_list, item);
+ return xlog_recover_inode_pass2(log, buffer_list, item,
+ trans->r_lsn);
case XFS_LI_EFI:
return xlog_recover_efi_pass2(log, item, trans->r_lsn);
case XFS_LI_EFD:
return xlog_recover_efd_pass2(log, item);
case XFS_LI_DQUOT:
- return xlog_recover_dquot_pass2(log, buffer_list, item);
+ return xlog_recover_dquot_pass2(log, buffer_list, item,
+ trans->r_lsn);
case XFS_LI_ICREATE:
return xlog_recover_do_icreate_pass2(log, buffer_list, item);
case XFS_LI_QUOTAOFF:
@@ -3177,6 +3432,26 @@ xlog_recover_commit_pass2(
}
}
+STATIC int
+xlog_recover_items_pass2(
+ struct xlog *log,
+ struct xlog_recover *trans,
+ struct list_head *buffer_list,
+ struct list_head *item_list)
+{
+ struct xlog_recover_item *item;
+ int error = 0;
+
+ list_for_each_entry(item, item_list, ri_list) {
+ error = xlog_recover_commit_pass2(log, trans,
+ buffer_list, item);
+ if (error)
+ return error;
+ }
+
+ return error;
+}
+
/*
* Perform the transaction.
*
@@ -3189,9 +3464,16 @@ xlog_recover_commit_trans(
struct xlog_recover *trans,
int pass)
{
- int error = 0, error2;
- xlog_recover_item_t *item;
- LIST_HEAD (buffer_list);
+ int error = 0;
+ int error2;
+ int items_queued = 0;
+ struct xlog_recover_item *item;
+ struct xlog_recover_item *next;
+ LIST_HEAD (buffer_list);
+ LIST_HEAD (ra_list);
+ LIST_HEAD (done_list);
+
+ #define XLOG_RECOVER_COMMIT_QUEUE_MAX 100
hlist_del(&trans->r_list);
@@ -3199,14 +3481,22 @@ xlog_recover_commit_trans(
if (error)
return error;
- list_for_each_entry(item, &trans->r_itemq, ri_list) {
+ list_for_each_entry_safe(item, next, &trans->r_itemq, ri_list) {
switch (pass) {
case XLOG_RECOVER_PASS1:
error = xlog_recover_commit_pass1(log, trans, item);
break;
case XLOG_RECOVER_PASS2:
- error = xlog_recover_commit_pass2(log, trans,
- &buffer_list, item);
+ xlog_recover_ra_pass2(log, item);
+ list_move_tail(&item->ri_list, &ra_list);
+ items_queued++;
+ if (items_queued >= XLOG_RECOVER_COMMIT_QUEUE_MAX) {
+ error = xlog_recover_items_pass2(log, trans,
+ &buffer_list, &ra_list);
+ list_splice_tail_init(&ra_list, &done_list);
+ items_queued = 0;
+ }
+
break;
default:
ASSERT(0);
@@ -3216,9 +3506,19 @@ xlog_recover_commit_trans(
goto out;
}
+out:
+ if (!list_empty(&ra_list)) {
+ if (!error)
+ error = xlog_recover_items_pass2(log, trans,
+ &buffer_list, &ra_list);
+ list_splice_tail_init(&ra_list, &done_list);
+ }
+
+ if (!list_empty(&done_list))
+ list_splice_init(&done_list, &trans->r_itemq);
+
xlog_recover_free_trans(trans);
-out:
error2 = xfs_buf_delwri_submit(&buffer_list);
return error ? error : error2;
}
@@ -3376,7 +3676,7 @@ xlog_recover_process_efi(
}
tp = xfs_trans_alloc(mp, 0);
- error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, 0, 0);
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
if (error)
goto abort_error;
efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents);
@@ -3482,8 +3782,7 @@ xlog_recover_clear_agi_bucket(
int error;
tp = xfs_trans_alloc(mp, XFS_TRANS_CLEAR_AGI_BUCKET);
- error = xfs_trans_reserve(tp, 0, XFS_CLEAR_AGI_BUCKET_LOG_RES(mp),
- 0, 0, 0);
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_clearagi, 0, 0);
if (error)
goto out_abort;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-13 19:05:27 +0000