Show device as journal in --detail --examine
Example output: ./mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Wed May 13 17:01:12 2015 Raid Level : raid5 Array Size : 11720662464 (11177.69 GiB 12001.96 GB) Used Dev Size : 3906887488 (3725.90 GiB 4000.65 GB) Raid Devices : 4 Total Devices : 5 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Wed May 13 17:01:12 2015 State : clean Active Devices : 4 Working Devices : 5 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 32K Name : 0 UUID : 8fb9ee05:3831d52f:e5c23825:28cd6881 Events : 0 Number Major Minor RaidDevice State 0 8 32 0 active sync /dev/sdc 1 8 48 1 active sync /dev/sdd 2 8 64 2 active sync /dev/sde 3 8 80 3 active sync /dev/sdf 4 8 17 - journal /dev/sdb1 ./mdadm -E /dev/sdb2 /dev/sdb2: Magic : a92b4efc Version : 1.2 Feature Map : 0x201 Array UUID : 562b2334:35b9bcc1:add50892:1f30c4bd Name : 0 Creation Time : Thu Aug 27 12:55:26 2015 Raid Level : raid5 Raid Devices : 15 Avail Dev Size : 249796608 (119.11 GiB 127.90 GB) Array Size : 54696423936 (52162.57 GiB 56009.14 GB) Used Dev Size : 7813774848 (3725.90 GiB 4000.65 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262056 sectors, after=0 sectors State : active Device UUID : 5015e522:d39ba566:5909cf3c:9c51f2ff Internal Bitmap : 8 sectors from superblock Update Time : Thu Aug 27 13:16:55 2015 Bad Block Log : 512 entries available at offset 72 sectors Checksum : 4e6fd76d - correct Events : 262 Layout : left-symmetric Chunk Size : 256K Device Role : Journal Array State : AAAAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing) Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: NeilBrown <neilb@suse.com>
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3
Detail.c
3
Detail.c
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@ -650,9 +650,10 @@ This is pretty boring
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}
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if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
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if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
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if (disk.state & (1<<MD_DISK_JOURNAL)) printf(" journal");
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if ((disk.state &
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((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
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|(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)))
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|(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)|(1<<MD_DISK_JOURNAL)))
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== 0) {
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printf(" spare");
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if (is_26) {
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2
md_p.h
2
md_p.h
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@ -91,9 +91,11 @@
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*/
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#define MD_DISK_REPLACEMENT 17
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#define MD_DISK_JOURNAL 18 /* disk is used as the write journal in RAID-5/6 */
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#define MD_DISK_ROLE_SPARE 0xffff
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#define MD_DISK_ROLE_FAULTY 0xfffe
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#define MD_DISK_ROLE_JOURNAL 0xfffd
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#define MD_DISK_ROLE_MAX 0xff00 /* max value of regular disk role */
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typedef struct mdp_device_descriptor_s {
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9
super1.c
9
super1.c
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@ -126,6 +126,7 @@ struct misc_dev_info {
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*/
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#define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */
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#define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */
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#define MD_FEATURE_JOURNAL 512 /* support write journal */
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#define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \
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|MD_FEATURE_RECOVERY_OFFSET \
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|MD_FEATURE_RESHAPE_ACTIVE \
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@ -134,6 +135,7 @@ struct misc_dev_info {
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|MD_FEATURE_RESHAPE_BACKWARDS \
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|MD_FEATURE_NEW_OFFSET \
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|MD_FEATURE_BITMAP_VERSIONED \
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|MD_FEATURE_JOURNAL \
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)
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/* return how many bytes are needed for bitmap, for cluster-md each node
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@ -484,6 +486,8 @@ static void examine_super1(struct supertype *st, char *homehost)
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role = MD_DISK_ROLE_SPARE;
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if (role >= MD_DISK_ROLE_FAULTY)
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printf("spare\n");
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else if (role == MD_DISK_ROLE_JOURNAL)
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printf("Journal\n");
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else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT))
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printf("Replacement device %d\n", role);
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else
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@ -995,6 +999,11 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map)
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case MD_DISK_ROLE_FAULTY:
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info->disk.state = 1; /* faulty */
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break;
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case MD_DISK_ROLE_JOURNAL:
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info->disk.state = (1 << MD_DISK_JOURNAL);
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info->disk.raid_disk = role;
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info->space_after = (misc->device_size - info->data_offset) % 8; /* journal uses all 4kB blocks*/
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break;
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default:
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info->disk.state = 6; /* active and in sync */
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info->disk.raid_disk = role;
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