From: Tomas Henzl <thenzl@redhat.com> Date: Sun, 29 Aug 2010 15:49:28 -0400 Subject: [block] cciss: add raid_level attribute to logical drives Message-id: <1283097002-3341-30-git-send-email-thenzl@redhat.com> Patchwork-id: 27890 O-Subject: [RHEL6 PATCH 29/63] cciss: Add raid_level attribute to logical drives in /sys Bugzilla: 568830 RH-Acked-by: Neil Horman <nhorman@redhat.com> Add raid_level attribute to logical drives in /sys diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index de6ae68..e2c9e32 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -604,12 +604,36 @@ static ssize_t cciss_show_lunid(struct device *dev, } DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); +static ssize_t cciss_show_raid_level(struct device *dev, + struct device_attribute *attr, char *buf) +{ + drive_info_struct *drv = dev_get_drvdata(dev); + struct ctlr_info *h = to_hba(drv->dev->parent); + int raid; + unsigned long flags; + + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) { + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + return -EBUSY; + } + raid = drv->raid_level; + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + if (raid < 0 || raid > 5) + raid = RAID_UNKNOWN; + + return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", + raid_label[raid]); +} +DEVICE_ATTR(raid_level, S_IRUGO | S_IWUSR, cciss_show_raid_level, NULL); + struct device_attribute *cciss_dev_attrs[] = { &dev_attr_unique_id, &dev_attr_vendor, &dev_attr_model, &dev_attr_rev, &dev_attr_lunid, + &dev_attr_raid_level, NULL, };