-stable review patch. If anyone has any objections, please let us know. ------------------ From: NeilBrown While developing more functionality in mdadm I found some bugs in md... - When we remove a device from an inactive array (write 'remove' to the 'state' sysfs file - see 'state_store') would should not update the superblock information - as we may not have read and processed it all properly yet. - initialise all raid_disk entries to '-1' else the 'slot sysfs file will claim '0' for all devices in an array before the array is started. - all '\n' not to be present at the end of words written to sysfs files - when we use SET_ARRAY_INFO to set the md metadata version, set the flag to say that there is persistant metadata. - allow GET_BITMAP_FILE to be called on an array that hasn't been started yet. Signed-off-by: Neil Brown Signed-off-by: Chris Wright --- drivers/md/md.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) --- linux-2.6.19.2.orig/drivers/md/md.c +++ linux-2.6.19.2/drivers/md/md.c @@ -1792,7 +1792,8 @@ state_store(mdk_rdev_t *rdev, const char else { mddev_t *mddev = rdev->mddev; kick_rdev_from_array(rdev); - md_update_sb(mddev, 1); + if (mddev->pers) + md_update_sb(mddev, 1); md_new_event(mddev); err = 0; } @@ -2004,6 +2005,7 @@ static mdk_rdev_t *md_import_device(dev_ rdev->desc_nr = -1; rdev->saved_raid_disk = -1; + rdev->raid_disk = -1; rdev->flags = 0; rdev->data_offset = 0; rdev->sb_events = 0; @@ -2233,7 +2235,6 @@ static int update_raid_disks(mddev_t *md static ssize_t raid_disks_store(mddev_t *mddev, const char *buf, size_t len) { - /* can only set raid_disks if array is not yet active */ char *e; int rv = 0; unsigned long n = simple_strtoul(buf, &e, 10); @@ -2631,7 +2632,7 @@ metadata_store(mddev_t *mddev, const cha return -EINVAL; buf = e+1; minor = simple_strtoul(buf, &e, 10); - if (e==buf || *e != '\n') + if (e==buf || (*e && *e != '\n') ) return -EINVAL; if (major >= sizeof(super_types)/sizeof(super_types[0]) || super_types[major].name == NULL) @@ -3978,6 +3979,7 @@ static int set_array_info(mddev_t * mdde mddev->major_version = info->major_version; mddev->minor_version = info->minor_version; mddev->patch_version = info->patch_version; + mddev->persistent = ! info->not_persistent; return 0; } mddev->major_version = MD_MAJOR_VERSION; @@ -4302,9 +4304,10 @@ static int md_ioctl(struct inode *inode, * Commands querying/configuring an existing array: */ /* if we are not initialised yet, only ADD_NEW_DISK, STOP_ARRAY, - * RUN_ARRAY, and SET_BITMAP_FILE are allowed */ + * RUN_ARRAY, and GET_ and SET_BITMAP_FILE are allowed */ if (!mddev->raid_disks && cmd != ADD_NEW_DISK && cmd != STOP_ARRAY - && cmd != RUN_ARRAY && cmd != SET_BITMAP_FILE) { + && cmd != RUN_ARRAY && cmd != SET_BITMAP_FILE + && cmd != GET_BITMAP_FILE) { err = -ENODEV; goto abort_unlock; } -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/