From 6d4d9ab295de165e57b5c30e044028dbffb8f297 Mon Sep 17 00:00:00 2001 From: Mariusz Tkaczyk Date: Tue, 21 Jun 2022 00:10:42 +0800 Subject: [PATCH 24/83] imsm: use same slot across container Autolayout relies on drives order on super->disks list, but it is not quaranted by readdir() in sysfs_read(). As a result drive could be put in different slot in second volume. Make it consistent by reffering to first volume, if exists. Use enum imsm_status to unify error handling. Signed-off-by: Mariusz Tkaczyk Acked-by: Coly Li Signed-off-by: Jes Sorensen --- super-intel.c | 169 ++++++++++++++++++++++++++++++++------------------ 1 file changed, 108 insertions(+), 61 deletions(-) diff --git a/super-intel.c b/super-intel.c index cd1f1e3d..deef7c87 100644 --- a/super-intel.c +++ b/super-intel.c @@ -7522,11 +7522,27 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level, return 1; } -static int imsm_get_free_size(struct supertype *st, int raiddisks, - unsigned long long size, int chunk, - unsigned long long *freesize) +/** + * imsm_get_free_size() - get the biggest, common free space from members. + * @super: &intel_super pointer, not NULL. + * @raiddisks: number of raid disks. + * @size: requested size, could be 0 (means max size). + * @chunk: requested chunk. + * @freesize: pointer for returned size value. + * + * Return: &IMSM_STATUS_OK or &IMSM_STATUS_ERROR. + * + * @freesize is set to meaningful value, this can be @size, or calculated + * max free size. + * super->create_offset value is modified and set appropriately in + * merge_extends() for further creation. + */ +static imsm_status_t imsm_get_free_size(struct intel_super *super, + const int raiddisks, + unsigned long long size, + const int chunk, + unsigned long long *freesize) { - struct intel_super *super = st->sb; struct imsm_super *mpb = super->anchor; struct dl *dl; int i; @@ -7570,12 +7586,10 @@ static int imsm_get_free_size(struct supertype *st, int raiddisks, /* chunk is in K */ minsize = chunk * 2; - if (cnt < raiddisks || - (super->orom && used && used != raiddisks) || - maxsize < minsize || - maxsize == 0) { + if (cnt < raiddisks || (super->orom && used && used != raiddisks) || + maxsize < minsize || maxsize == 0) { pr_err("not enough devices with space to create array.\n"); - return 0; /* No enough free spaces large enough */ + return IMSM_STATUS_ERROR; } if (size == 0) { @@ -7588,37 +7602,69 @@ static int imsm_get_free_size(struct supertype *st, int raiddisks, } if (mpb->num_raid_devs > 0 && size && size != maxsize) pr_err("attempting to create a second volume with size less then remaining space.\n"); - cnt = 0; - for (dl = super->disks; dl; dl = dl->next) - if (dl->e) - dl->raiddisk = cnt++; - *freesize = size; dprintf("imsm: imsm_get_free_size() returns : %llu\n", size); - return 1; + return IMSM_STATUS_OK; } -static int reserve_space(struct supertype *st, int raiddisks, - unsigned long long size, int chunk, - unsigned long long *freesize) +/** + * autolayout_imsm() - automatically layout a new volume. + * @super: &intel_super pointer, not NULL. + * @raiddisks: number of raid disks. + * @size: requested size, could be 0 (means max size). + * @chunk: requested chunk. + * @freesize: pointer for returned size value. + * + * We are being asked to automatically layout a new volume based on the current + * contents of the container. If the parameters can be satisfied autolayout_imsm + * will record the disks, start offset, and will return size of the volume to + * be created. See imsm_get_free_size() for details. + * add_to_super() and getinfo_super() detect when autolayout is in progress. + * If first volume exists, slots are set consistently to it. + * + * Return: &IMSM_STATUS_OK on success, &IMSM_STATUS_ERROR otherwise. + * + * Disks are marked for creation via dl->raiddisk. + */ +static imsm_status_t autolayout_imsm(struct intel_super *super, + const int raiddisks, + unsigned long long size, const int chunk, + unsigned long long *freesize) { - struct intel_super *super = st->sb; - struct dl *dl; - int cnt; - int rv = 0; + int curr_slot = 0; + struct dl *disk; + int vol_cnt = super->anchor->num_raid_devs; + imsm_status_t rv; - rv = imsm_get_free_size(st, raiddisks, size, chunk, freesize); - if (rv) { - cnt = 0; - for (dl = super->disks; dl; dl = dl->next) - if (dl->e) - dl->raiddisk = cnt++; - rv = 1; + rv = imsm_get_free_size(super, raiddisks, size, chunk, freesize); + if (rv != IMSM_STATUS_OK) + return IMSM_STATUS_ERROR; + + for (disk = super->disks; disk; disk = disk->next) { + if (!disk->e) + continue; + + if (curr_slot == raiddisks) + break; + + if (vol_cnt == 0) { + disk->raiddisk = curr_slot; + } else { + int _slot = get_disk_slot_in_dev(super, 0, disk->index); + + if (_slot == -1) { + pr_err("Disk %s is not used in first volume, aborting\n", + disk->devname); + return IMSM_STATUS_ERROR; + } + disk->raiddisk = _slot; + } + curr_slot++; } - return rv; + return IMSM_STATUS_OK; } static int validate_geometry_imsm(struct supertype *st, int level, int layout, @@ -7654,35 +7700,35 @@ static int validate_geometry_imsm(struct supertype *st, int level, int layout, } if (!dev) { - if (st->sb) { - struct intel_super *super = st->sb; - if (!validate_geometry_imsm_orom(st->sb, level, layout, - raiddisks, chunk, size, - verbose)) + struct intel_super *super = st->sb; + + /* + * Autolayout mode, st->sb and freesize must be set. + */ + if (!super || !freesize) { + pr_vrb("freesize and superblock must be set for autolayout, aborting\n"); + return 1; + } + + if (!validate_geometry_imsm_orom(st->sb, level, layout, + raiddisks, chunk, size, + verbose)) + return 0; + + if (super->orom) { + imsm_status_t rv; + int count = count_volumes(super->hba, super->orom->dpa, + verbose); + if (super->orom->vphba <= count) { + pr_vrb("platform does not support more than %d raid volumes.\n", + super->orom->vphba); return 0; - /* we are being asked to automatically layout a - * new volume based on the current contents of - * the container. If the the parameters can be - * satisfied reserve_space will record the disks, - * start offset, and size of the volume to be - * created. add_to_super and getinfo_super - * detect when autolayout is in progress. - */ - /* assuming that freesize is always given when array is - created */ - if (super->orom && freesize) { - int count; - count = count_volumes(super->hba, - super->orom->dpa, verbose); - if (super->orom->vphba <= count) { - pr_vrb("platform does not support more than %d raid volumes.\n", - super->orom->vphba); - return 0; - } } - if (freesize) - return reserve_space(st, raiddisks, size, - *chunk, freesize); + + rv = autolayout_imsm(super, raiddisks, size, *chunk, + freesize); + if (rv != IMSM_STATUS_OK) + return 0; } return 1; } @@ -11538,7 +11584,7 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st, unsigned long long current_size; unsigned long long free_size; unsigned long long max_size; - int rv; + imsm_status_t rv; getinfo_super_imsm_volume(st, &info, NULL); if (geo->level != info.array.level && geo->level >= 0 && @@ -11657,9 +11703,10 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st, } /* check the maximum available size */ - rv = imsm_get_free_size(st, dev->vol.map->num_members, - 0, chunk, &free_size); - if (rv == 0) + rv = imsm_get_free_size(super, dev->vol.map->num_members, + 0, chunk, &free_size); + + if (rv != IMSM_STATUS_OK) /* Cannot find maximum available space */ max_size = 0; -- 2.38.1