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raid: Introduce DEFAULT_RAID_MAX_IMAGES
Prepare to allow for the number of images in a raid set to be larger than the limit for old-style dm raid1.
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@ -63,6 +63,8 @@
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#define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate"
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#define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove"
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#define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */
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#define DEFAULT_RAID_MAX_IMAGES 8
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#define DEFAULT_RAID_FAULT_POLICY "warn"
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#define DEFAULT_DMEVENTD_RAID_LIB "libdevmapper-event-lvm2raid.so"
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@ -500,14 +500,23 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd,
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struct lvcreate_params *lp)
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{
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int pagesize = lvm_getpagesize();
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unsigned max_images;
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const char *segtype_name;
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/* Common mirror and raid params */
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if (arg_count(cmd, mirrors_ARG)) {
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lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0) + 1;
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if (segtype_is_raid1(lp->segtype)) {
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segtype_name = SEG_TYPE_NAME_RAID1;
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max_images = DEFAULT_RAID_MAX_IMAGES;
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} else {
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segtype_name = SEG_TYPE_NAME_MIRROR;
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max_images = DEFAULT_MIRROR_MAX_IMAGES;
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}
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if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) {
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log_error("Only up to " DM_TO_STRING(DEFAULT_MIRROR_MAX_IMAGES)
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" images in mirror supported currently.");
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if (lp->mirrors > max_images) {
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log_error("Only up to %u images in %s supported currently.",
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max_images, segtype_name);
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return 0;
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}
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