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Accepting request 828452 from home:michael-chang:branches:Base:System

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- Add fibre channel device's ofpath support to grub-ofpathname and search hint
  to speed up root device discovery (bsc#1172745)
  * 0001-ieee1275-powerpc-implements-fibre-channel-discovery-.patch
  * 0002-ieee1275-powerpc-enables-device-mapper-discovery.patch

OBS-URL: https://build.opensuse.org/request/show/828452
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=361
This commit is contained in:
Michael Chang 2020-08-21 11:29:27 +00:00 committed by Git OBS Bridge
parent 575991c6e5
commit 8d758b1bd2
4 changed files with 211 additions and 0 deletions
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90
0001-ieee1275-powerpc-implements-fibre-channel-discovery-.patch Normal file
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@ -0,0 +1,90 @@
From ca30b3c6fd8c848f510445316d0c4a8fca6061ba Mon Sep 17 00:00:00 2001
From: Diego Domingos <diegodo@br.ibm.com>
Date: Wed, 24 Jun 2020 08:17:18 -0400
Subject: [PATCH 1/2] ieee1275/powerpc: implements fibre channel discovery for
ofpathname
grub-ofpathname doesn't work with fibre channel because there is no
function currently implemented for it.
This patch enables it by prividing a function that looks for the port
name, building the entire path for OF devices.
---
grub-core/osdep/linux/ofpath.c | 48 ++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
index a6153d359..f2bc9fc5c 100644
--- a/grub-core/osdep/linux/ofpath.c
+++ b/grub-core/osdep/linux/ofpath.c
@@ -399,6 +399,37 @@ of_path_of_nvme(const char *sys_devname __attribute__((unused)),
}
#endif
+static void
+of_fc_port_name(const char *path, const char *subpath, char *port_name)
+{
+ char *bname, *basepath, *p;
+ int fd;
+
+ bname = xmalloc(sizeof(char)*150);
+ basepath = xmalloc(strlen(path));
+
+ /* Generate the path to get port name information from the drive */
+ strncpy(basepath,path,subpath-path);
+ basepath[subpath-path-1] = '\0';
+ p = get_basename(basepath);
+ snprintf(bname,sizeof(char)*150,"%s/fc_transport/%s/port_name",basepath,p);
+
+ /* Read the information from the port name */
+ fd = open (bname, O_RDONLY);
+ if (fd < 0)
+ grub_util_error (_("cannot open `%s': %s"), bname, strerror (errno));
+
+ if (read(fd,port_name,sizeof(char)*19) < 0)
+ grub_util_error (_("cannot read `%s': %s"), bname, strerror (errno));
+
+ sscanf(port_name,"0x%s",port_name);
+
+ close(fd);
+
+ free(bname);
+ free(basepath);
+}
+
static int
vendor_is_ATA(const char *path)
{
@@ -577,6 +608,16 @@ of_path_of_scsi(const char *sys_devname __attribute__((unused)), const char *dev
digit_string = trailing_digits (device);
if (strncmp (of_path, "/vdevice/", sizeof ("/vdevice/") - 1) == 0)
{
+ if(strstr(of_path,"vfc-client"))
+ {
+ char * port_name = xmalloc(sizeof(char)*17);
+ of_fc_port_name(sysfs_path, p, port_name);
+
+ snprintf(disk,sizeof(disk),"/%s@%s", disk_name, port_name);
+ free(port_name);
+ }
+ else
+ {
unsigned long id = 0x8000 | (tgt << 8) | (bus << 5) | lun;
if (*digit_string == '\0')
{
@@ -590,6 +631,13 @@ of_path_of_scsi(const char *sys_devname __attribute__((unused)), const char *dev
snprintf(disk, sizeof (disk),
"/%s@%04lx000000000000:%c", disk_name, id, 'a' + (part - 1));
}
+ }
+ } else if (strstr(of_path,"fibre-channel")||(strstr(of_path,"vfc-client"))){
+ char * port_name = xmalloc(sizeof(char)*17);
+ of_fc_port_name(sysfs_path, p, port_name);
+
+ snprintf(disk,sizeof(disk),"/%s@%s", disk_name, port_name);
+ free(port_name);
}
else
{
--
2.26.2

107
0002-ieee1275-powerpc-enables-device-mapper-discovery.patch Normal file
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@ -0,0 +1,107 @@
From 8b31ebfa42eb5af0633191d26fcdcea8c539e521 Mon Sep 17 00:00:00 2001
From: Diego Domingos <diegodo@br.ibm.com>
Date: Wed, 24 Jun 2020 08:22:50 -0400
Subject: [PATCH 2/2] ieee1275/powerpc: enables device mapper discovery
this patch enables the device mapper discovery on ofpath.c. Currently,
when we are dealing with a device like /dev/dm-* the ofpath returns null
since there is no function implemented to handle this case.
This patch implements a function that will look into /sys/block/dm-*
devices and search recursively inside slaves directory to find the root
disk.
---
grub-core/osdep/linux/ofpath.c | 64 +++++++++++++++++++++++++++++++++-
1 file changed, 63 insertions(+), 1 deletion(-)
diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
index f2bc9fc5c..d1040c4e6 100644
--- a/grub-core/osdep/linux/ofpath.c
+++ b/grub-core/osdep/linux/ofpath.c
@@ -37,6 +37,7 @@
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
+#include <dirent.h>
#ifdef __sparc__
typedef enum
@@ -754,13 +755,74 @@ strip_trailing_digits (const char *p)
return new;
}
+static char *
+get_slave_from_dm(const char * device){
+ char *curr_device, *tmp;
+ char *directory;
+ char *ret = NULL;
+
+ directory = grub_strdup (device);
+ tmp = get_basename(directory);
+ curr_device = grub_strdup (tmp);
+ *tmp = '\0';
+
+ /* Recursively check for slaves devices so we can find the root device */
+ while ((curr_device[0] == 'd') && (curr_device[1] == 'm') && (curr_device[2] == '-')){
+ DIR *dp;
+ struct dirent *ep;
+ char* device_path;
+
+ device_path = grub_xasprintf ("/sys/block/%s/slaves", curr_device);
+ dp = opendir(device_path);
+ free(device_path);
+
+ if (dp != NULL)
+ {
+ ep = readdir (dp);
+ while (ep != NULL){
+
+ /* avoid some system directories */
+ if (!strcmp(ep->d_name,"."))
+ goto next_dir;
+ if (!strcmp(ep->d_name,".."))
+ goto next_dir;
+
+ free (curr_device);
+ free (ret);
+ curr_device = grub_strdup (ep->d_name);
+ ret = grub_xasprintf ("%s%s", directory, curr_device);
+ break;
+
+ next_dir:
+ ep = readdir (dp);
+ continue;
+ }
+ closedir (dp);
+ }
+ else
+ grub_util_warn (_("cannot open directory `%s'"), device_path);
+ }
+
+ free (directory);
+ free (curr_device);
+
+ return ret;
+}
+
char *
grub_util_devname_to_ofpath (const char *sys_devname)
{
- char *name_buf, *device, *devnode, *devicenode, *ofpath;
+ char *name_buf, *device, *devnode, *devicenode, *ofpath, *realname;
name_buf = xrealpath (sys_devname);
+ realname = get_slave_from_dm (name_buf);
+ if (realname)
+ {
+ free (name_buf);
+ name_buf = realname;
+ }
+
device = get_basename (name_buf);
devnode = strip_trailing_digits (name_buf);
devicenode = strip_trailing_digits (device);
--
2.26.2

8
grub2.changes
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@ -1,3 +1,11 @@
-------------------------------------------------------------------
Fri Aug 21 04:40:48 UTC 2020 - Michael Chang <mchang@suse.com>
- Add fibre channel device's ofpath support to grub-ofpathname and search hint
to speed up root device discovery (bsc#1172745)
* 0001-ieee1275-powerpc-implements-fibre-channel-discovery-.patch
* 0002-ieee1275-powerpc-enables-device-mapper-discovery.patch
-------------------------------------------------------------------
Tue Aug 18 06:02:21 UTC 2020 - Michael Chang <mchang@suse.com>

6
grub2.spec
View File

@ -325,6 +325,10 @@ Patch714: 0001-kern-mm.c-Make-grub_calloc-inline.patch
# without shim protocol
Patch715: 0001-linuxefi-fail-kernel-validation-without-shim-protoco.patch
Patch716: 0002-cmdline-Provide-cmdline-functions-as-module.patch
# bsc#1172745 L3: SLES 12 SP4 - Slow boot of system after updated kernel -
# takes 45 minutes after grub to start loading kernel
Patch717: 0001-ieee1275-powerpc-implements-fibre-channel-discovery-.patch
Patch718: 0002-ieee1275-powerpc-enables-device-mapper-discovery.patch
Requires: gettext-runtime
%if 0%{?suse_version} >= 1140
@ -643,6 +647,8 @@ swap partition while in resuming
%patch714 -p1
%patch715 -p1
%patch716 -p1
%patch717 -p1
%patch718 -p1
%build
# collect evidence to debug spurious build failure on SLE15