Re: cancel btrfs delete job

[Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>]

Hi Franziska,

(2014/06/24 16:50), Franziska Näpelt wrote:
> Hi,
>
> i want to expand a btrfs filesystem. In the moment I have four 2 TB HDDs
> for one btrfs pool.
> I want to replace two of the HDDs with 3 TB devices. For this reason i
> added as first one 3 TB device. After that, i do the btrfs delete job.
> This job lasts since 4 days and it seems, that it hangs.
>
> Is it possible to cancel a btrfs delete job?
> And when so, how can i do that?

Unfortunately you can't cancel btrfs delete.

Q1. Does your environment and operations are as follows?

Environment:
  - You have six disks.
    - four 2TB disks: /dev/sd[a-d]
    - two 3TB disks: /dev/sd[ef]
  - Currently your btrfs filesystem consists of /dev/sd[a-d].
  - You want to replace /dev/sd[cd] with /dev/[ef].

Your operation:
  1. Add one 3TB disk, /dev/sde.     # It works correctly.
  2. Delete one 2TB disk, /dev/sdc   # Hanged up happens here!

Q2. Does I/Os for delete still in progress, or there is no I/O?

Thanks,
Satoru

>
> Best regards,
> Franziska
>
>
>
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