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| author | Karel Zak | 2018-10-18 15:46:07 +0200 |
|---|---|---|
| committer | Karel Zak | 2018-12-07 12:33:34 +0100 |
| commit | dc4662f0e755929de9cbe98b1b343b492fd620f4 (patch) | |
| tree | 6947fd4b81219649cb23eff5d1eb4b12f3c86252 /misc-utils/lsblk.h | |
| parent | lsblk: remember whole-disk, remove unused struct member (diff) | |
| download | kernel-qcow2-util-linux-dc4662f0e755929de9cbe98b1b343b492fd620f4.tar.gz kernel-qcow2-util-linux-dc4662f0e755929de9cbe98b1b343b492fd620f4.tar.xz kernel-qcow2-util-linux-dc4662f0e755929de9cbe98b1b343b492fd620f4.zip | |
lsblk: add --dedup <column>
The target use-case are systems with large number of multi-path
devices or systems with duplicate (copied) filesystems.
The feature is flexible enough to use arbitrary column (for example
WWM or UUID, ...) as de-duplication key.
For example tree with multi-path devices sd{c,d,e,f}
./lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 223.6G 0 disk
├─sda1 8:1 0 200M 0 part /boot/efi
├─sda2 8:2 0 200M 0 part /boot
├─sda3 8:3 0 130.3G 0 part
├─sda4 8:4 0 50G 0 part /
└─sda5 8:5 0 42.9G 0 part
sdb 8:16 0 74.5G 0 disk
└─sdb1 8:17 0 74.5G 0 part /home/archive
sdc 8:32 0 100M 0 disk
└─mpatha 253:0 0 100M 0 mpath
├─mpatha1 253:1 0 50M 0 part
└─mpatha2 253:2 0 49M 0 part
sdd 8:48 0 100M 0 disk
└─mpatha 253:0 0 100M 0 mpath
├─mpatha1 253:1 0 50M 0 part
└─mpatha2 253:2 0 49M 0 part
sde 8:64 0 100M 0 disk
└─mpatha 253:0 0 100M 0 mpath
├─mpatha1 253:1 0 50M 0 part
└─mpatha2 253:2 0 49M 0 part
sdf 8:80 0 100M 0 disk
└─mpatha 253:0 0 100M 0 mpath
├─mpatha1 253:1 0 50M 0 part
└─mpatha2 253:2 0 49M 0 part
De-duplicate by WWN:
./lsblk -M WWN
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 223.6G 0 disk
├─sda1 8:1 0 200M 0 part /boot/efi
├─sda2 8:2 0 200M 0 part /boot
├─sda3 8:3 0 130.3G 0 part
├─sda4 8:4 0 50G 0 part /
└─sda5 8:5 0 42.9G 0 part
sdb 8:16 0 74.5G 0 disk
└─sdb1 8:17 0 74.5G 0 part /home/archive
sdc 8:32 0 100M 0 disk
└─mpatha 253:0 0 100M 0 mpath
├─mpatha1 253:1 0 50M 0 part
└─mpatha2 253:2 0 49M 0 part
Addresses: https://github.com/karelzak/util-linux/issues/616
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'misc-utils/lsblk.h')
| -rw-r--r-- | misc-utils/lsblk.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/misc-utils/lsblk.h b/misc-utils/lsblk.h index 6a2ad6aa2..236c84934 100644 --- a/misc-utils/lsblk.h +++ b/misc-utils/lsblk.h @@ -32,9 +32,12 @@ UL_DEBUG_DECLARE_MASK(lsblk); struct lsblk { struct libscols_table *table; /* output table */ + struct libscols_column *sort_col;/* sort output by this column */ int sort_id; + int dedup_id; + const char *sysroot; int flags; /* LSBLK_* */ @@ -45,6 +48,7 @@ struct lsblk { unsigned int scsi:1; /* print only device with HCTL (SCSI) */ unsigned int paths:1; /* print devnames with "/dev" prefix */ unsigned int sort_hidden:1; /* sort column not between output columns */ + unsigned int dedup_hidden :1; /* deduplication column not between output columns */ unsigned int force_tree_order:1;/* sort lines by parent->tree relation */ }; @@ -91,6 +95,7 @@ struct lsblk_device { char *dm_name; /* DM name (dm/block) */ char *filename; /* path to device node */ + char *dedupkey; /* de-duplication key */ struct path_cxt *sysfs; @@ -200,5 +205,6 @@ int lsblk_devtree_next_device(struct lsblk_devtree *tr, int lsblk_devtree_has_device(struct lsblk_devtree *tr, struct lsblk_device *dev); struct lsblk_device *lsblk_devtree_get_device(struct lsblk_devtree *tr, const char *name); int lsblk_devtree_remove_device(struct lsblk_devtree *tr, struct lsblk_device *dev); +int lsblk_devtree_deduplicate_devices(struct lsblk_devtree *tr); #endif /* UTIL_LINUX_LSBLK_H */ |