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Extending usage messages with some info on the quota functionality:
- The -i option of "subvol create" and "subvol snapshot" was not
documented
- The -c option of "qgroup limit" is the default option
- The "qouta rescan" command is not yet implemented, while it should be
executed after enabling quota on a non-empty filesystem.
Signed-off-by: Koen De Wit <koen.de.wit@oracle.com>
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The original code forgot to output the reason why the commands failed,
fix it.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
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If we fail to execute the command:
btrfs qgroup show <mnt>
It will output the follow messages:
ERROR: can't perform the search - Inappropriate ioctl for device
ERROR: can't list qgroups
The error is outputed twice, this is wrong, fix it.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
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It wasn't closed in the error path.
Signed-off-by: Zach Brown <zab@redhat.com>
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The definition of the function open_file_or_dir() is moved from common.c
to utils.c in order to be able to share some common code between scrub
and the device stats in the following step. That common code uses
open_file_or_dir(). Since open_file_or_dir() makes use of the function
dirfd(3), the required XOPEN version was raised from 6 to 7.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Original-Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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The compiler does not realize that usage() never returns.
Initializing the variable keeps it quiet.
Signed-off-by: Gene Czarcinski <gene@czarc.net>
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Comparing qgroupid is not good way to check the relationship of two groups,
the right way is to compare the real level numbers.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Gene Czarcinski <gene@czarc.net>
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strtoull
1. parse_qgroupid() is implemented twice, clean up the reduplicate code.
2. atoi() can not detect errors, so use strtoull() instead of it.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Gene Czarcinski <gene@czarc.net>
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We can use this command in two ways.
1. btrfs qgroup limit size qgroupid path
2. btrfs qgroup limit size path
Before applying this patch, we differentiate them by check the parsing result
of the second argument. It is not so good because it may make some mistakes,
For example:
btrfs qgroup limit 1M 123456
^ It is a subvolume name.
In fact, we can differentiate them just by the number of arguments, so fix it
by this way.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Gene Czarcinski <gene@czarc.net>
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Segmentation fault occurred in the following command.
# btrfs qgroup limit
Segmentation fault
So, we should check a minimum number of arguments.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
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Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Arne Jansen <sensille@gmx.net>
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