diff options
author | Cheng Renquan <crquan@gmail.com> | 2009-01-09 00:31:08 +0300 |
---|---|---|
committer | NeilBrown <neilb@suse.de> | 2009-01-09 00:31:08 +0300 |
commit | cd2ac9321c26dc7a76455cd2a4df89123fa2b73e (patch) | |
tree | 8163a2cc791282cf32fafed19a60f357882d6169 /drivers | |
parent | 159ec1fc060ab22b157a62364045f5e98749c4d3 (diff) | |
download | linux-cd2ac9321c26dc7a76455cd2a4df89123fa2b73e.tar.xz |
md: need another print_sb for mdp_superblock_1
md_print_devices is called in two code path: MD_BUG(...), and md_ioctl
with PRINT_RAID_DEBUG. it will dump out all in use md devices
information;
However, it wrongly processed two types of superblock in one:
The header file <linux/raid/md_p.h> has defined two types of superblock,
struct mdp_superblock_s (typedefed with mdp_super_t) according to md with
metadata 0.90, and struct mdp_superblock_1 according to md with metadata
1.0 and later,
These two types of superblock are very different,
The md_print_devices code processed them both in mdp_super_t, that would
lead to wrong informaton dump like:
[ 6742.345877]
[ 6742.345887] md: **********************************
[ 6742.345890] md: * <COMPLETE RAID STATE PRINTOUT> *
[ 6742.345892] md: **********************************
[ 6742.345896] md1: <ram7><ram6><ram5><ram4>
[ 6742.345907] md: rdev ram7, SZ:00065472 F:0 S:1 DN:3
[ 6742.345909] md: rdev superblock:
[ 6742.345914] md: SB: (V:0.90.0) ID:<42ef13c7.598c059a.5f9f1645.801e9ee6> CT:4919856d
[ 6742.345918] md: L5 S00065472 ND:4 RD:4 md1 LO:2 CS:65536
[ 6742.345922] md: UT:4919856d ST:1 AD:4 WD:4 FD:0 SD:0 CSUM:b7992907 E:00000001
[ 6742.345924] D 0: DISK<N:0,(1,8),R:0,S:6>
[ 6742.345930] D 1: DISK<N:1,(1,10),R:1,S:6>
[ 6742.345933] D 2: DISK<N:2,(1,12),R:2,S:6>
[ 6742.345937] D 3: DISK<N:3,(1,14),R:3,S:6>
[ 6742.345942] md: THIS: DISK<N:3,(1,14),R:3,S:6>
...
[ 6742.346058] md0: <ram3><ram2><ram1><ram0>
[ 6742.346067] md: rdev ram3, SZ:00065472 F:0 S:1 DN:3
[ 6742.346070] md: rdev superblock:
[ 6742.346073] md: SB: (V:1.0.0) ID:<369aad81.00000000.00000000.00000000> CT:9a322a9c
[ 6742.346077] md: L-1507699579 S976570180 ND:48 RD:0 md0 LO:65536 CS:196610
[ 6742.346081] md: UT:00000018 ST:0 AD:131048 WD:0 FD:8 SD:0 CSUM:00000000 E:00000000
[ 6742.346084] D 0: DISK<N:-1,(-1,-1),R:-1,S:-1>
[ 6742.346089] D 1: DISK<N:-1,(-1,-1),R:-1,S:-1>
[ 6742.346092] D 2: DISK<N:-1,(-1,-1),R:-1,S:-1>
[ 6742.346096] D 3: DISK<N:-1,(-1,-1),R:-1,S:-1>
[ 6742.346102] md: THIS: DISK<N:0,(0,0),R:0,S:0>
...
[ 6742.346219] md: **********************************
[ 6742.346221]
Here md1 is metadata 0.90.0, and md0 is metadata 1.2
After some more code to distinguish these two types of superblock, in this patch,
it will generate dump information like:
[ 7906.755790]
[ 7906.755799] md: **********************************
[ 7906.755802] md: * <COMPLETE RAID STATE PRINTOUT> *
[ 7906.755804] md: **********************************
[ 7906.755808] md1: <ram7><ram6><ram5><ram4>
[ 7906.755819] md: rdev ram7, SZ:00065472 F:0 S:1 DN:3
[ 7906.755821] md: rdev superblock (MJ:0):
[ 7906.755826] md: SB: (V:0.90.0) ID:<3fca7a0d.a612bfed.5f9f1645.801e9ee6> CT:491989f3
[ 7906.755830] md: L5 S00065472 ND:4 RD:4 md1 LO:2 CS:65536
[ 7906.755834] md: UT:491989f3 ST:1 AD:4 WD:4 FD:0 SD:0 CSUM:00fb52ad E:00000001
[ 7906.755836] D 0: DISK<N:0,(1,8),R:0,S:6>
[ 7906.755842] D 1: DISK<N:1,(1,10),R:1,S:6>
[ 7906.755845] D 2: DISK<N:2,(1,12),R:2,S:6>
[ 7906.755849] D 3: DISK<N:3,(1,14),R:3,S:6>
[ 7906.755855] md: THIS: DISK<N:3,(1,14),R:3,S:6>
...
[ 7906.755972] md0: <ram3><ram2><ram1><ram0>
[ 7906.755981] md: rdev ram3, SZ:00065472 F:0 S:1 DN:3
[ 7906.755984] md: rdev superblock (MJ:1):
[ 7906.755989] md: SB: (V:1) (F:0) Array-ID:<5fbcf158:55aa:5fbe:9a79:1e939880dcbd>
[ 7906.755990] md: Name: "DG5:0" CT:1226410480
[ 7906.755998] md: L5 SZ130944 RD:4 LO:2 CS:128 DO:24 DS:131048 SO:8 RO:0
[ 7906.755999] md: Dev:00000003 UUID: 9194d744:87f7:a448:85f2:7497b84ce30a
[ 7906.756001] md: (F:0) UT:1226410480 Events:0 ResyncOffset:-1 CSUM:0dbcd829
[ 7906.756003] md: (MaxDev:384)
...
[ 7906.756113] md: **********************************
[ 7906.756116]
this md0 (metadata 1.2) information dumping is exactly according to struct
mdp_superblock_1.
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Dan Williams <dan.j.williams@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/md/md.c | 66 |
1 files changed, 60 insertions, 6 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 58be665bb46b..1f770c16d435 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1588,7 +1588,7 @@ static void print_desc(mdp_disk_t *desc) desc->major,desc->minor,desc->raid_disk,desc->state); } -static void print_sb(mdp_super_t *sb) +static void print_sb_90(mdp_super_t *sb) { int i; @@ -1619,10 +1619,57 @@ static void print_sb(mdp_super_t *sb) } printk(KERN_INFO "md: THIS: "); print_desc(&sb->this_disk); - } -static void print_rdev(mdk_rdev_t *rdev) +static void print_sb_1(struct mdp_superblock_1 *sb) +{ + __u8 *uuid; + + uuid = sb->set_uuid; + printk(KERN_INFO "md: SB: (V:%u) (F:0x%08x) Array-ID:<%02x%02x%02x%02x" + ":%02x%02x:%02x%02x:%02x%02x:%02x%02x%02x%02x%02x%02x>\n" + KERN_INFO "md: Name: \"%s\" CT:%llu\n", + le32_to_cpu(sb->major_version), + le32_to_cpu(sb->feature_map), + uuid[0], uuid[1], uuid[2], uuid[3], + uuid[4], uuid[5], uuid[6], uuid[7], + uuid[8], uuid[9], uuid[10], uuid[11], + uuid[12], uuid[13], uuid[14], uuid[15], + sb->set_name, + (unsigned long long)le64_to_cpu(sb->ctime) + & MD_SUPERBLOCK_1_TIME_SEC_MASK); + + uuid = sb->device_uuid; + printk(KERN_INFO "md: L%u SZ%llu RD:%u LO:%u CS:%u DO:%llu DS:%llu SO:%llu" + " RO:%llu\n" + KERN_INFO "md: Dev:%08x UUID: %02x%02x%02x%02x:%02x%02x:%02x%02x:%02x%02x" + ":%02x%02x%02x%02x%02x%02x\n" + KERN_INFO "md: (F:0x%08x) UT:%llu Events:%llu ResyncOffset:%llu CSUM:0x%08x\n" + KERN_INFO "md: (MaxDev:%u) \n", + le32_to_cpu(sb->level), + (unsigned long long)le64_to_cpu(sb->size), + le32_to_cpu(sb->raid_disks), + le32_to_cpu(sb->layout), + le32_to_cpu(sb->chunksize), + (unsigned long long)le64_to_cpu(sb->data_offset), + (unsigned long long)le64_to_cpu(sb->data_size), + (unsigned long long)le64_to_cpu(sb->super_offset), + (unsigned long long)le64_to_cpu(sb->recovery_offset), + le32_to_cpu(sb->dev_number), + uuid[0], uuid[1], uuid[2], uuid[3], + uuid[4], uuid[5], uuid[6], uuid[7], + uuid[8], uuid[9], uuid[10], uuid[11], + uuid[12], uuid[13], uuid[14], uuid[15], + sb->devflags, + (unsigned long long)le64_to_cpu(sb->utime) & MD_SUPERBLOCK_1_TIME_SEC_MASK, + (unsigned long long)le64_to_cpu(sb->events), + (unsigned long long)le64_to_cpu(sb->resync_offset), + le32_to_cpu(sb->sb_csum), + le32_to_cpu(sb->max_dev) + ); +} + +static void print_rdev(mdk_rdev_t *rdev, int major_version) { char b[BDEVNAME_SIZE]; printk(KERN_INFO "md: rdev %s, SZ:%08llu F:%d S:%d DN:%u\n", @@ -1630,8 +1677,15 @@ static void print_rdev(mdk_rdev_t *rdev) test_bit(Faulty, &rdev->flags), test_bit(In_sync, &rdev->flags), rdev->desc_nr); if (rdev->sb_loaded) { - printk(KERN_INFO "md: rdev superblock:\n"); - print_sb((mdp_super_t*)page_address(rdev->sb_page)); + printk(KERN_INFO "md: rdev superblock (MJ:%d):\n", major_version); + switch (major_version) { + case 0: + print_sb_90((mdp_super_t*)page_address(rdev->sb_page)); + break; + case 1: + print_sb_1((struct mdp_superblock_1 *)page_address(rdev->sb_page)); + break; + } } else printk(KERN_INFO "md: no rdev superblock!\n"); } @@ -1658,7 +1712,7 @@ static void md_print_devices(void) printk("\n"); list_for_each_entry(rdev, &mddev->disks, same_set) - print_rdev(rdev); + print_rdev(rdev, mddev->major_version); } printk("md: **********************************\n"); printk("\n"); |