[lvm-devel] [PATCH] RAID: Make RAID 4/5/6 display sync status under heading s/Copy%/Cpy%Sync

[Zdenek Kabelac]

Dne 11.10.2012 18:58, Jonathan Brassow napsal(a):
> RAID: Make RAID 4/5/6 display sync status under heading s/Copy%/Cpy%Sync
>
> The heading 'Copy%' is specific to PVMOVE volumes, but can be generalized
> to apply to LVM mirrors also.  It is a bit awkward to use 'Copy%' for
> RAID 4/5/6, however - 'Sync%' would be more appropriate.  This is why
> RAID 4/5/6 have not displayed their sync status by any means available to
> 'lvs' yet.
>
> Example (old):
> [root at hayes-02 lvm2]# lvs vg
>    LV      VG   Attr      LSize  Pool Origin Data%  Move Log Cpy%Sy Convert
>    lv    vg   -wi-a----  1.00g
>    raid1 vg   rwi-a-r--  1.00g                             100.00
>    raid4 vg   rwi-a-r--  1.01g
>    raid5 vg   rwi-a-r--  1.01g
>    raid6 vg   rwi-a-r--  1.01g
>
> This patch changes the heading to 'Cpy%Sync' and allows RAID 4/5/6 to print
> their sync percent in this field.
>
> Example (new):
> [root at hayes-02 lvm2]# lvs vg
>    LV    VG   Attr      LSize Pool Origin Data%  Move Log Cpy%Sync Convert
>    lv    vg   -wi-a---- 1.00g
>    raid1 vg   rwi-a-r-- 1.00g                               100.00
>    raid4 vg   rwi-a-r-- 1.01g                               100.00
>    raid5 vg   rwi-a-r-- 1.01g                               100.00
>    raid6 vg   rwi-a-r-- 1.01g                               100.00
>
> Signed-off-by: Jonathan Brassow <jbrassow at redhat.com>
>
> Index: lvm2/lib/report/columns.h
> ===================================================================
> --- lvm2.orig/lib/report/columns.h
> +++ lvm2/lib/report/columns.h
> @@ -78,7 +78,7 @@ FIELD(LVS, lv, NUM, "OSize", lvid, 5, or
>   FIELD(LVS, lv, NUM, "Data%", lvid, 6, datapercent, data_percent, "For snapshot and thin pools and volumes, the percentage full if LV is active.", 0)
>   FIELD(LVS, lv, NUM, "Snap%", lvid, 6, snpercent, snap_percent, "For snapshots, the percentage full if LV is active.", 0)
>   FIELD(LVS, lv, NUM, "Meta%", lvid, 6, metadatapercent, metadata_percent, "For thin pools, the percentage of metadata full if LV is active.", 0)
> -FIELD(LVS, lv, NUM, "Copy%", lvid, 6, copypercent, copy_percent, "For mirrors and pvmove, current percentage in-sync.", 0)
> +FIELD(LVS, lv, NUM, "Cpy%Sync", lvid, 8, copypercent, copy_percent, "For RAID, mirrors and pvmove, current percentage in-sync.", 0)


Just add new one if needed - and keep the old one available for users (staying 
backward compatible)

You may update default columns written by lvs command and change Copy% field 
to something else.

Though IMHO   Copy%  looks better then Cpy%Sync...


Zdenek