96 lines
2.8 KiB
Diff
96 lines
2.8 KiB
Diff
From a8f3cfd54e45c8aabc4a99cdc92b6b9080b26607 Mon Sep 17 00:00:00 2001
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From: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
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Date: Wed, 4 Nov 2020 10:01:28 +0100
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Subject: [PATCH 102/108] imsm: limit support to first NVMe namespace
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Due to metadata limitations NVMe multinamespace support has to be removed.
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Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
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---
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platform-intel.c | 31 +++++++++++++++++++++++++++++++
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platform-intel.h | 1 +
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super-intel.c | 11 ++++++++++-
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3 files changed, 42 insertions(+), 1 deletion(-)
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diff --git a/platform-intel.c b/platform-intel.c
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index 04bffc5..f1f6d4c 100644
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--- a/platform-intel.c
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+++ b/platform-intel.c
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@@ -766,3 +766,34 @@ char *vmd_domain_to_controller(struct sys_dev *hba, char *buf)
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closedir(dir);
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return NULL;
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}
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+/* Verify that NVMe drive is supported by IMSM
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+ * Returns:
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+ * 0 - not supported
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+ * 1 - supported
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+ */
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+int imsm_is_nvme_supported(int disk_fd, int verbose)
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+{
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+ char nsid_path[PATH_MAX];
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+ char buf[PATH_MAX];
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+ struct stat stb;
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+
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+ if (disk_fd < 0)
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+ return 0;
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+
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+ if (fstat(disk_fd, &stb))
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+ return 0;
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+
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+ snprintf(nsid_path, PATH_MAX-1, "/sys/dev/block/%d:%d/nsid",
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+ major(stb.st_rdev), minor(stb.st_rdev));
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+
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+ if (load_sys(nsid_path, buf, sizeof(buf))) {
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+ pr_err("Cannot read %s, rejecting drive\n", nsid_path);
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+ return 0;
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+ }
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+ if (strtoll(buf, NULL, 10) != 1) {
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+ if (verbose)
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+ pr_err("Only first namespace is supported by IMSM, aborting\n");
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+ return 0;
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+ }
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+ return 1;
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+}
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diff --git a/platform-intel.h b/platform-intel.h
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index 7cb370e..7371478 100644
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--- a/platform-intel.h
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+++ b/platform-intel.h
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@@ -251,4 +251,5 @@ const struct orom_entry *get_orom_entry_by_device_id(__u16 dev_id);
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const struct imsm_orom *get_orom_by_device_id(__u16 device_id);
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struct sys_dev *device_by_id(__u16 device_id);
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struct sys_dev *device_by_id_and_path(__u16 device_id, const char *path);
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+int imsm_is_nvme_supported(int disk_fd, int verbose);
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char *vmd_domain_to_controller(struct sys_dev *hba, char *buf);
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diff --git a/super-intel.c b/super-intel.c
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index 95f4eaf..715febf 100644
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--- a/super-intel.c
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+++ b/super-intel.c
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@@ -2364,7 +2364,9 @@ static int print_nvme_info(struct sys_dev *hba)
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continue;
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if (path_attached_to_hba(rp, hba->path)) {
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fd = open_dev(ent->d_name);
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- if (fd < 0) {
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+ if (!imsm_is_nvme_supported(fd, 0)) {
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+ if (fd >= 0)
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+ close(fd);
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free(rp);
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continue;
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}
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@@ -5868,6 +5870,13 @@ static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
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snprintf(controller_path, PATH_MAX-1, "%s/device", devpath);
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free(devpath);
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+ if (!imsm_is_nvme_supported(dd->fd, 1)) {
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+ if (dd->devname)
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+ free(dd->devname);
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+ free(dd);
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+ return 1;
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+ }
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+
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if (devpath_to_vendor(controller_path) == 0x8086) {
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/*
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* If Intel's NVMe drive has serial ended with
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--
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2.7.5
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