From: Darrick J. Wong <djwong@xxxxxxxxxx> If realtime groups are enabled, we should take advantage of the sharding to speed up the spacemap scans. Do so by issuing per-rtgroup GETFSMAP calls. Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- scrub/spacemap.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 62 insertions(+), 8 deletions(-) diff --git a/scrub/spacemap.c b/scrub/spacemap.c index 4b7fae252d86ca..c293ab44a5286c 100644 --- a/scrub/spacemap.c +++ b/scrub/spacemap.c @@ -127,6 +127,43 @@ scan_ag_rmaps( } } +/* Iterate all the reverse mappings of a realtime group. */ +static void +scan_rtg_rmaps( + struct workqueue *wq, + xfs_agnumber_t rgno, + void *arg) +{ + struct scrub_ctx *ctx = (struct scrub_ctx *)wq->wq_ctx; + struct scan_blocks *sbx = arg; + struct fsmap keys[2] = { }; + off_t bperrg = bytes_per_rtgroup(&ctx->mnt.fsgeom); + int ret; + + keys[0].fmr_device = ctx->fsinfo.fs_rtdev; + keys[0].fmr_physical = (xfs_rtblock_t)rgno * bperrg; + keys[1].fmr_device = ctx->fsinfo.fs_rtdev; + keys[1].fmr_physical = ((rgno + 1) * bperrg) - 1; + keys[1].fmr_owner = ULLONG_MAX; + keys[1].fmr_offset = ULLONG_MAX; + keys[1].fmr_flags = UINT_MAX; + + if (sbx->aborted) + return; + + ret = scrub_iterate_fsmap(ctx, keys, sbx->fn, sbx->arg); + if (ret) { + char descr[DESCR_BUFSZ]; + + snprintf(descr, DESCR_BUFSZ, _("dev %d:%d rtgroup %u fsmap"), + major(ctx->fsinfo.fs_datadev), + minor(ctx->fsinfo.fs_datadev), + rgno); + str_liberror(ctx, ret, descr); + sbx->aborted = true; + } +} + /* Iterate all the reverse mappings of a standalone device. */ static void scan_dev_rmaps( @@ -206,14 +243,6 @@ scrub_scan_all_spacemaps( str_liberror(ctx, ret, _("creating fsmap workqueue")); return ret; } - if (ctx->fsinfo.fs_rt) { - ret = -workqueue_add(&wq, scan_rt_rmaps, 0, &sbx); - if (ret) { - sbx.aborted = true; - str_liberror(ctx, ret, _("queueing rtdev fsmap work")); - goto out; - } - } if (ctx->fsinfo.fs_log) { ret = -workqueue_add(&wq, scan_log_rmaps, 0, &sbx); if (ret) { @@ -230,6 +259,31 @@ scrub_scan_all_spacemaps( break; } } + if (ctx->fsinfo.fs_rt) { + for (agno = 0; agno < ctx->mnt.fsgeom.rgcount; agno++) { + ret = -workqueue_add(&wq, scan_rtg_rmaps, agno, &sbx); + if (ret) { + sbx.aborted = true; + str_liberror(ctx, ret, + _("queueing rtgroup fsmap work")); + break; + } + } + + /* + * If the fs doesn't have any realtime groups, scan the entire + * volume all at once, since the above loop did nothing. + */ + if (ctx->mnt.fsgeom.rgcount == 0) { + ret = -workqueue_add(&wq, scan_rt_rmaps, 0, &sbx); + if (ret) { + sbx.aborted = true; + str_liberror(ctx, ret, + _("queueing rtdev fsmap work")); + goto out; + } + } + } out: ret = -workqueue_terminate(&wq); if (ret) {