From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Kwolek Subject: [PATCH 11/14] imsm: Support setting max size for size change operation Date: Fri, 13 Apr 2012 16:52:05 +0200 Message-ID: <1334328728-12544-12-git-send-email-adam.kwolek@intel.com> References: <1334328728-12544-1-git-send-email-adam.kwolek@intel.com> <1334328728-12544-2-git-send-email-adam.kwolek@intel.com> <1334328728-12544-3-git-send-email-adam.kwolek@intel.com> <1334328728-12544-4-git-send-email-adam.kwolek@intel.com> <1334328728-12544-5-git-send-email-adam.kwolek@intel.com> <1334328728-12544-6-git-send-email-adam.kwolek@intel.com> <1334328728-12544-7-git-send-email-adam.kwolek@intel.com> <1334328728-12544-8-git-send-email-adam.kwolek@intel.com> <1334328728-12544-9-git-send-email-adam.kwolek@intel.com> <1334328728-12544-10-git-send-email-adam.kwolek@intel.com> <1334328728-12544-11-git-send-email-adam.kwolek@intel.com> Return-path: In-Reply-To: <1334328728-12544-11-git-send-email-adam.kwolek@intel.com> Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: linux-raid@vger.kernel.org, dan.j.williams@intel.com, ed.ciechanowski@intel.com, grzegorz.grabowski@intel.com, maciej.patelczyk@intel.com, anna.czarnowska@intel.com, Adam Kwolek List-Id: linux-raid.ids Add support for setting max size for size change operation using imsm_get_free_size() function for computing maximum available space. Signed-off-by: Adam Kwolek --- super-intel.c | 24 ++++++++++++++++++++++-- 1 files changed, 22 insertions(+), 2 deletions(-) diff --git a/super-intel.c b/super-intel.c index 7161fc5..d9c293c 100644 --- a/super-intel.c +++ b/super-intel.c @@ -9955,7 +9955,7 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st, */ current_size = info.custom_array_size / 2 / data_disks; - if ((current_size != geo->size) && (geo->size > 0)) { + if ((current_size != geo->size) && (geo->size >= 0)) { if (change != -1) { fprintf(stderr, Name " Error. Size change should be the only " @@ -9970,7 +9970,27 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st, super->current_vol, st->devnum); goto analyse_change_exit; } - geo->size *= 2; + if (geo->size == 0) { + /* requested size change to the maximum available size + */ + unsigned long long freesize; + int rv; + + rv = imsm_get_free_size(st, dev->vol.map->num_members, + 0, chunk, &freesize); + if (rv == 0) { + fprintf(stderr, Name " Error. Cannot find " + "maximum available space.\n"); + change = -1; + goto analyse_change_exit; + } + geo->size = freesize + current_size; + + /* round to chunk size */ + geo->size &= ~(chunk-1); + } else + geo->size *= 2; + if ((direction == ROLLBACK_METADATA_CHANGES)) { /* accept size for rollback only */ -- 1.6.4.2