X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_log.c;h=54a6f114240311867fa4a55a7deaa2612584abfa;hb=51c91ed52b8a9a30fcb2a465b40c20a1f11735ba;hp=1cd2ac1638778b3e69c67acd6a47280cdc52cd3a;hpb=62778ba1aa2589dc78c36a32edc6f5a6ccaf50c6;p=linux-2.6-omap-h63xx.git diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 1cd2ac16387..54a6f114240 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -159,11 +159,15 @@ xfs_buftarg_t *xlog_target; void xlog_trace_loggrant(xlog_t *log, xlog_ticket_t *tic, xfs_caddr_t string) { - if (! log->l_grant_trace) { - log->l_grant_trace = ktrace_alloc(1024, KM_NOSLEEP); - if (! log->l_grant_trace) + unsigned long cnts; + + if (!log->l_grant_trace) { + log->l_grant_trace = ktrace_alloc(2048, KM_NOSLEEP); + if (!log->l_grant_trace) return; } + /* ticket counts are 1 byte each */ + cnts = ((unsigned long)tic->t_ocnt) | ((unsigned long)tic->t_cnt) << 8; ktrace_enter(log->l_grant_trace, (void *)tic, @@ -178,10 +182,10 @@ xlog_trace_loggrant(xlog_t *log, xlog_ticket_t *tic, xfs_caddr_t string) (void *)((unsigned long)CYCLE_LSN(log->l_tail_lsn)), (void *)((unsigned long)BLOCK_LSN(log->l_tail_lsn)), (void *)string, - (void *)((unsigned long)13), - (void *)((unsigned long)14), - (void *)((unsigned long)15), - (void *)((unsigned long)16)); + (void *)((unsigned long)tic->t_trans_type), + (void *)cnts, + (void *)((unsigned long)tic->t_curr_res), + (void *)((unsigned long)tic->t_unit_res)); } void @@ -274,9 +278,11 @@ xfs_log_done(xfs_mount_t *mp, * Release ticket if not permanent reservation or a specifc * request has been made to release a permanent reservation. */ + xlog_trace_loggrant(log, ticket, "xfs_log_done: (non-permanent)"); xlog_ungrant_log_space(log, ticket); xlog_state_put_ticket(log, ticket); } else { + xlog_trace_loggrant(log, ticket, "xfs_log_done: (permanent)"); xlog_regrant_reserve_log_space(log, ticket); } @@ -399,7 +405,8 @@ xfs_log_reserve(xfs_mount_t *mp, int cnt, xfs_log_ticket_t *ticket, __uint8_t client, - uint flags) + uint flags, + uint t_type) { xlog_t *log = mp->m_log; xlog_ticket_t *internal_ticket; @@ -421,13 +428,19 @@ xfs_log_reserve(xfs_mount_t *mp, if (*ticket != NULL) { ASSERT(flags & XFS_LOG_PERM_RESERV); internal_ticket = (xlog_ticket_t *)*ticket; + xlog_trace_loggrant(log, internal_ticket, "xfs_log_reserve: existing ticket (permanent trans)"); xlog_grant_push_ail(mp, internal_ticket->t_unit_res); retval = xlog_regrant_write_log_space(log, internal_ticket); } else { /* may sleep if need to allocate more tickets */ internal_ticket = xlog_ticket_get(log, unit_bytes, cnt, client, flags); + internal_ticket->t_trans_type = t_type; *ticket = internal_ticket; + xlog_trace_loggrant(log, internal_ticket, + (internal_ticket->t_flags & XLOG_TIC_PERM_RESERV) ? + "xfs_log_reserve: create new ticket (permanent trans)" : + "xfs_log_reserve: create new ticket"); xlog_grant_push_ail(mp, (internal_ticket->t_unit_res * internal_ticket->t_cnt)); @@ -601,8 +614,9 @@ xfs_log_unmount_write(xfs_mount_t *mp) if (! (XLOG_FORCED_SHUTDOWN(log))) { reg[0].i_addr = (void*)&magic; reg[0].i_len = sizeof(magic); + XLOG_VEC_SET_TYPE(®[0], XLOG_REG_TYPE_UNMOUNT); - error = xfs_log_reserve(mp, 600, 1, &tic, XFS_LOG, 0); + error = xfs_log_reserve(mp, 600, 1, &tic, XFS_LOG, 0, 0); if (!error) { /* remove inited flag */ ((xlog_ticket_t *)tic)->t_flags = 0; @@ -1272,6 +1286,7 @@ xlog_commit_record(xfs_mount_t *mp, reg[0].i_addr = NULL; reg[0].i_len = 0; + XLOG_VEC_SET_TYPE(®[0], XLOG_REG_TYPE_COMMIT); ASSERT_ALWAYS(iclog); if ((error = xlog_write(mp, reg, 1, ticket, commitlsnp, @@ -1604,6 +1619,117 @@ xlog_state_finish_copy(xlog_t *log, +/* + * print out info relating to regions written which consume + * the reservation + */ +#if defined(XFS_LOG_RES_DEBUG) +STATIC void +xlog_print_tic_res(xfs_mount_t *mp, xlog_ticket_t *ticket) +{ + uint i; + uint ophdr_spc = ticket->t_res_num_ophdrs * (uint)sizeof(xlog_op_header_t); + + /* match with XLOG_REG_TYPE_* in xfs_log.h */ + static char *res_type_str[XLOG_REG_TYPE_MAX] = { + "bformat", + "bchunk", + "efi_format", + "efd_format", + "iformat", + "icore", + "iext", + "ibroot", + "ilocal", + "iattr_ext", + "iattr_broot", + "iattr_local", + "qformat", + "dquot", + "quotaoff", + "LR header", + "unmount", + "commit", + "trans header" + }; + static char *trans_type_str[XFS_TRANS_TYPE_MAX] = { + "SETATTR_NOT_SIZE", + "SETATTR_SIZE", + "INACTIVE", + "CREATE", + "CREATE_TRUNC", + "TRUNCATE_FILE", + "REMOVE", + "LINK", + "RENAME", + "MKDIR", + "RMDIR", + "SYMLINK", + "SET_DMATTRS", + "GROWFS", + "STRAT_WRITE", + "DIOSTRAT", + "WRITE_SYNC", + "WRITEID", + "ADDAFORK", + "ATTRINVAL", + "ATRUNCATE", + "ATTR_SET", + "ATTR_RM", + "ATTR_FLAG", + "CLEAR_AGI_BUCKET", + "QM_SBCHANGE", + "DUMMY1", + "DUMMY2", + "QM_QUOTAOFF", + "QM_DQALLOC", + "QM_SETQLIM", + "QM_DQCLUSTER", + "QM_QINOCREATE", + "QM_QUOTAOFF_END", + "SB_UNIT", + "FSYNC_TS", + "GROWFSRT_ALLOC", + "GROWFSRT_ZERO", + "GROWFSRT_FREE", + "SWAPEXT" + }; + + xfs_fs_cmn_err(CE_WARN, mp, + "xfs_log_write: reservation summary:\n" + " trans type = %s (%u)\n" + " unit res = %d bytes\n" + " current res = %d bytes\n" + " total reg = %u bytes (o/flow = %u bytes)\n" + " ophdrs = %u (ophdr space = %u bytes)\n" + " ophdr + reg = %u bytes\n" + " num regions = %u\n", + ((ticket->t_trans_type <= 0 || + ticket->t_trans_type > XFS_TRANS_TYPE_MAX) ? + "bad-trans-type" : trans_type_str[ticket->t_trans_type-1]), + ticket->t_trans_type, + ticket->t_unit_res, + ticket->t_curr_res, + ticket->t_res_arr_sum, ticket->t_res_o_flow, + ticket->t_res_num_ophdrs, ophdr_spc, + ticket->t_res_arr_sum + + ticket->t_res_o_flow + ophdr_spc, + ticket->t_res_num); + + for (i = 0; i < ticket->t_res_num; i++) { + uint r_type = ticket->t_res_arr[i].r_type; + cmn_err(CE_WARN, + "region[%u]: %s - %u bytes\n", + i, + ((r_type <= 0 || r_type > XLOG_REG_TYPE_MAX) ? + "bad-rtype" : res_type_str[r_type-1]), + ticket->t_res_arr[i].r_len); + } +} +#else +#define xlog_print_tic_res(mp, ticket) +#endif + /* * Write some region out to in-core log * @@ -1677,16 +1803,21 @@ xlog_write(xfs_mount_t * mp, * xlog_op_header_t and may need to be double word aligned. */ len = 0; - if (ticket->t_flags & XLOG_TIC_INITED) /* acct for start rec of xact */ + if (ticket->t_flags & XLOG_TIC_INITED) { /* acct for start rec of xact */ len += sizeof(xlog_op_header_t); + XLOG_TIC_ADD_OPHDR(ticket); + } for (index = 0; index < nentries; index++) { len += sizeof(xlog_op_header_t); /* each region gets >= 1 */ + XLOG_TIC_ADD_OPHDR(ticket); len += reg[index].i_len; + XLOG_TIC_ADD_REGION(ticket, reg[index].i_len, reg[index].i_type); } contwr = *start_lsn = 0; if (ticket->t_curr_res < len) { + xlog_print_tic_res(mp, ticket); #ifdef DEBUG xlog_panic( "xfs_log_write: reservation ran out. Need to up reservation"); @@ -1790,6 +1921,7 @@ xlog_write(xfs_mount_t * mp, len += sizeof(xlog_op_header_t); /* from splitting of region */ /* account for new log op header */ ticket->t_curr_res -= sizeof(xlog_op_header_t); + XLOG_TIC_ADD_OPHDR(ticket); } xlog_verify_dest_ptr(log, ptr); @@ -2282,6 +2414,9 @@ restart: */ if (log_offset == 0) { ticket->t_curr_res -= log->l_iclog_hsize; + XLOG_TIC_ADD_REGION(ticket, + log->l_iclog_hsize, + XLOG_REG_TYPE_LRHEADER); INT_SET(head->h_cycle, ARCH_CONVERT, log->l_curr_cycle); ASSIGN_LSN(head->h_lsn, log); ASSERT(log->l_curr_block >= 0); @@ -2468,6 +2603,7 @@ xlog_regrant_write_log_space(xlog_t *log, #endif tic->t_curr_res = tic->t_unit_res; + XLOG_TIC_RESET_RES(tic); if (tic->t_cnt > 0) return (0); @@ -2608,6 +2744,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'w'); XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'r'); ticket->t_curr_res = ticket->t_unit_res; + XLOG_TIC_RESET_RES(ticket); xlog_trace_loggrant(log, ticket, "xlog_regrant_reserve_log_space: sub current res"); xlog_verify_grant_head(log, 1); @@ -2624,6 +2761,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, xlog_verify_grant_head(log, 0); GRANT_UNLOCK(log, s); ticket->t_curr_res = ticket->t_unit_res; + XLOG_TIC_RESET_RES(ticket); } /* xlog_regrant_reserve_log_space */ @@ -3179,29 +3317,57 @@ xlog_ticket_get(xlog_t *log, * and their unit amount is the total amount of space required. * * The following lines of code account for non-transaction data - * which occupy space in the on-disk log. + * which occupy space in the on-disk log. + * + * Normal form of a transaction is: + * ... + * and then there are LR hdrs, split-recs and roundoff at end of syncs. + * + * We need to account for all the leadup data and trailer data + * around the transaction data. + * And then we need to account for the worst case in terms of using + * more space. + * The worst case will happen if: + * - the placement of the transaction happens to be such that the + * roundoff is at its maximum + * - the transaction data is synced before the commit record is synced + * i.e. | + * Therefore the commit record is in its own Log Record. + * This can happen as the commit record is called with its + * own region to xlog_write(). + * This then means that in the worst case, roundoff can happen for + * the commit-rec as well. + * The commit-rec is smaller than padding in this scenario and so it is + * not added separately. */ + /* for trans header */ + unit_bytes += sizeof(xlog_op_header_t); + unit_bytes += sizeof(xfs_trans_header_t); + /* for start-rec */ - unit_bytes += sizeof(xlog_op_header_t); + unit_bytes += sizeof(xlog_op_header_t); + + /* for LR headers */ + num_headers = ((unit_bytes + log->l_iclog_size-1) >> log->l_iclog_size_log); + unit_bytes += log->l_iclog_hsize * num_headers; + + /* for commit-rec LR header - note: padding will subsume the ophdr */ + unit_bytes += log->l_iclog_hsize; + + /* for split-recs - ophdrs added when data split over LRs */ + unit_bytes += sizeof(xlog_op_header_t) * num_headers; - /* for padding */ + /* for roundoff padding for transaction data and one for commit record */ if (XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb) && - log->l_mp->m_sb.sb_logsunit > 1) { + log->l_mp->m_sb.sb_logsunit > 1) { /* log su roundoff */ - unit_bytes += log->l_mp->m_sb.sb_logsunit; + unit_bytes += 2*log->l_mp->m_sb.sb_logsunit; } else { /* BB roundoff */ - unit_bytes += BBSIZE; + unit_bytes += 2*BBSIZE; } - /* for commit-rec */ - unit_bytes += sizeof(xlog_op_header_t); - - /* for LR headers */ - num_headers = ((unit_bytes + log->l_iclog_size-1) >> log->l_iclog_size_log); - unit_bytes += log->l_iclog_hsize * num_headers; - tic->t_unit_res = unit_bytes; tic->t_curr_res = unit_bytes; tic->t_cnt = cnt; @@ -3209,10 +3375,13 @@ xlog_ticket_get(xlog_t *log, tic->t_tid = (xlog_tid_t)((__psint_t)tic & 0xffffffff); tic->t_clientid = client; tic->t_flags = XLOG_TIC_INITED; + tic->t_trans_type = 0; if (xflags & XFS_LOG_PERM_RESERV) tic->t_flags |= XLOG_TIC_PERM_RESERV; sv_init(&(tic->t_sema), SV_DEFAULT, "logtick"); + XLOG_TIC_RESET_RES(tic); + return tic; } /* xlog_ticket_get */