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Stop recreating linux-swap twice when shrinking a partition (#741211) 

Shrinking swap partition operation performs these steps:

    Shrink /dev/sdb2 from 2.00 GiB to 1.00 GiB
    + calibrate /dev/sdb2
    + check file system on /dev/sdb2 for errors and (if possible) fix them
        checking is not available for this file system
    + shrink file system
      + create new linux-swap file system
        + mkswap -L "test-swap" -U "bd381eba-5df7-42e2-8e0e-411e9701c995" /dev/sdb2
    + shrink partition from 2.00 GiB to 1.00 GiB
      + create new linux-swap file system
        + mkswap -L "test-swap" -U "bd381eba-5df7-42e2-8e0e-411e9701c995" /dev/sdb2

Resizing a linux-swap partition was partially special cased in
GParted_Core::resize().  Make it fully special cased so that it just
does the following steps.  No more skipped file system checks or extra
resizing.

    1)  Resize partition,
    2)  Recreate linux-swap.

This existing call chain recreates the linux-swap:
    GParted_Core::resize_filesystem()
        linux_swap::resize()

A compound move and resize operation still performs unnecessary checks
and recreates of linux-swap, but less than before.

Bug 741211 - Remove unnecessary duplicate actions when resizing a
             partition
This commit is contained in:
Mike Fleetwood 2014-12-06 23:48:35 +00:00 committed by Curtis Gedak
parent b4acb14ff1
commit 99f770ddb0
1 changed files with 11 additions and 8 deletions
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19
src/GParted_Core.cc
View File

@ -2389,7 +2389,15 @@ bool GParted_Core::resize( const Partition & partition_old,
}
bool succes = false ;
if ( partition_new. busy || check_repair_filesystem( partition_new, operationdetail ) )
if ( partition_new.filesystem == FS_LINUX_SWAP )
{
// linux-swap is recreated, not resize
succes = resize_move_partition( partition_old, partition_new, operationdetail )
&& resize_filesystem( partition_old, partition_new, operationdetail );
return succes;
}
else if ( partition_new.busy || check_repair_filesystem( partition_new, operationdetail ) )
{
succes = true ;
@ -2399,13 +2407,8 @@ bool GParted_Core::resize( const Partition & partition_old,
if ( succes )
succes = resize_move_partition( partition_old, partition_new, operationdetail ) ;
//expand file system to fit exactly in partition
if ( succes
&& ( //Maximize file system if linux-swap or new size > old
partition_new .filesystem == FS_LINUX_SWAP //linux-swap is recreated, not resized
|| partition_new .get_sector_length() > partition_old .get_sector_length()
)
)
// Maximize file system if growing
if ( succes && partition_new .get_sector_length() > partition_old .get_sector_length() )
succes = maximize_filesystem( partition_new, operationdetail );
return succes ;