The patch titled
md: Allow resync_start to be set and queried via sysfs
has been added to the -mm tree. Its filename is
md-allow-resync_start-to-be-set-and-queried-via-sysfs.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: md: Allow resync_start to be set and queried via sysfs
From: NeilBrown <neilb@xxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
Documentation/md.txt | 6 ++++++
drivers/md/md.c | 26 ++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff -puN Documentation/md.txt~md-allow-resync_start-to-be-set-and-queried-via-sysfs Documentation/md.txt
--- devel/Documentation/md.txt~md-allow-resync_start-to-be-set-and-queried-via-sysfs 2006-05-31 22:28:23.000000000 -0700
+++ devel-akpm/Documentation/md.txt 2006-05-31 22:28:23.000000000 -0700
@@ -205,6 +205,12 @@ All md devices contain:
simply a number that is interpretted differently by different
levels. It can be written while assembling an array.
+ resync_start
+ The point at which resync should start. If no resync is needed,
+ this will be a very large number. At array creation it will
+ default to 0, though starting the array as 'clean' will
+ set it much larger.
+
new_dev
This file can be written but not read. The value written should
be a block device number as major:minor. e.g. 8:0
diff -puN drivers/md/md.c~md-allow-resync_start-to-be-set-and-queried-via-sysfs drivers/md/md.c
--- devel/drivers/md/md.c~md-allow-resync_start-to-be-set-and-queried-via-sysfs 2006-05-31 22:28:23.000000000 -0700
+++ devel-akpm/drivers/md/md.c 2006-05-31 22:28:23.000000000 -0700
@@ -2235,6 +2235,30 @@ chunk_size_store(mddev_t *mddev, const c
static struct md_sysfs_entry md_chunk_size =
__ATTR(chunk_size, 0644, chunk_size_show, chunk_size_store);
+static ssize_t
+resync_start_show(mddev_t *mddev, char *page)
+{
+ return sprintf(page, "%llu\n", (unsigned long long)mddev->recovery_cp);
+}
+
+static ssize_t
+resync_start_store(mddev_t *mddev, const char *buf, size_t len)
+{
+ /* can only set chunk_size if array is not yet active */
+ char *e;
+ unsigned long long n = simple_strtoull(buf, &e, 10);
+
+ if (mddev->pers)
+ return -EBUSY;
+ if (!*buf || (*e && *e != '\n'))
+ return -EINVAL;
+
+ mddev->recovery_cp = n;
+ return len;
+}
+static struct md_sysfs_entry md_resync_start =
+__ATTR(resync_start, 0644, resync_start_show, resync_start_store);
+
/*
* The array state can be:
*
@@ -2771,6 +2795,7 @@ static struct attribute *md_default_attr
&md_raid_disks.attr,
&md_chunk_size.attr,
&md_size.attr,
+ &md_resync_start.attr,
&md_metadata.attr,
&md_new_device.attr,
&md_safe_delay.attr,
@@ -3263,6 +3288,7 @@ static int do_md_stop(mddev_t * mddev, i
mddev->array_size = 0;
mddev->size = 0;
mddev->raid_disks = 0;
+ mddev->recovery_cp = 0;
disk = mddev->gendisk;
if (disk)
_
Patches currently in -mm which might be from neilb@xxxxxxx are
origin.patch
fix-dcache-race-during-umount.patch
prune_one_dentry-tweaks.patch
remove-softlockup-from-invalidate_mapping_pages.patch
prepare-for-__copy_from_user_inatomic-to-not-zero-missed-bytes.patch
make-copy_from_user_inatomic-not-zero-the-tail-on-i386.patch
kconfig-select-things-at-the-closest-tristate-instead-of-bool.patch
dm-mirror-sector-offset-fix.patch
md-reformat-code-in-raid1_end_write_request-to-avoid-goto.patch
md-remove-arbitrary-limit-on-chunk-size.patch
md-remove-useless-ioctl-warning.patch
md-increase-the-delay-before-marking-metadata-clean-and-make-it-configurable.patch
md-merge-raid5-and-raid6-code.patch
md-remove-nuisance-message-at-shutdown.patch
md-allow-checkpoint-of-recovery-with-version-1-superblock.patch
md-allow-checkpoint-of-recovery-with-version-1-superblock-fix.patch
md-allow-a-linear-array-to-have-drives-added-while-active.patch
md-support-stripe-offset-mode-in-raid10.patch
md-make-md_print_devices-static.patch
md-split-reshape-portion-of-raid5-sync_request-into-a-separate-function.patch
md-bitmap-fix-online-removal-of-file-backed-bitmaps.patch
md-bitmap-remove-bitmap-writeback-daemon.patch
md-bitmap-cleaner-separation-of-page-attribute-handlers-in-md-bitmap.patch
md-bitmap-use-set_bit-etc-for-bitmap-page-attributes.patch
md-bitmap-remove-unnecessary-page-reference-manipulations-from-md-bitmap-code.patch
md-bitmap-remove-dead-code-from-md-bitmap.patch
md-bitmap-tidy-up-i_writecount-handling-in-md-bitmap.patch
md-bitmap-change-md-bitmap-file-handling-to-use-bmap-to-file-blocks.patch
md-change-md-bitmap-file-handling-to-use-bmap-to-file-blocks-fix.patch
md-calculate-correct-array-size-for-raid10-in-new-offset-mode.patch
md-md-kconfig-speeling-feex.patch
md-fix-kconfig-error.patch
md-fix-bug-that-stops-raid5-resync-from-happening.patch
md-allow-re-add-to-work-on-array-without-bitmaps.patch
md-dont-write-dirty-clean-update-to-spares-leave-them-alone.patch
md-set-get-state-of-array-via-sysfs.patch
md-allow-rdev-state-to-be-set-via-sysfs.patch
md-allow-raid-layout-to-be-read-and-set-via-sysfs.patch
md-allow-resync_start-to-be-set-and-queried-via-sysfs.patch
md-allow-the-write_mostly-flag-to-be-set-via-sysfs.patch
md-dm-reduce-stack-usage-with-stacked-block-devices.patch
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