From: Goldwyn Rodrigues <rgoldwyn@suse.de>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH v3 0/2] btrfs: Enumerate and export exclusive operations
Date: Tue, 25 Aug 2020 10:02:31 -0500 [thread overview]
Message-ID: <20200825150233.30294-1-rgoldwyn@suse.de> (raw)
This patch series enumerates the exlcusive operation currently being
perfomed by the current filesystem and exports it in the sys filesytem
at /sys/fs/btrfs/<fsid>/exclusive_operation.
This would enable our tools to specify precisely which operation is
running on why starting an exclusive operation failed. The series also
adds a sysfs_notify() to alert userspace when the state changes, so
userspace can perform select() on it to get notified of the change.
This would enable us to enqueue a command which will wait for current
exclusive operation to complete before issuing the next exclusive
operation. This has been done synchronously as opposed to a background
process, or else error collection (if any) will become a nightmare.
For backward compatibility, the tools continue working as before if the
sys file is not present.
Changes since v1:
- Corrected call for btrfs_start_exop() in btrfs_ioctl_dev_replace()
- Use fsid_str[] instead of fsid[] to save on uuid_parse()
Changes since v2:
- Dropped patch to add additional balance information
- modified (simplified) progs patches accordingly
next reply other threads:[~2020-08-25 15:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 15:02 Goldwyn Rodrigues [this message]
2020-08-25 15:02 ` [PATCH 1/2] btrfs: enumerate the type of exclusive operation in progress Goldwyn Rodrigues
2020-09-02 13:42 ` David Sterba
2020-08-25 15:02 ` [PATCH 2/2] btrfs: export currently executing exclusive operation via sysfs Goldwyn Rodrigues
2020-08-25 15:03 ` [PATCH 1/4] btrfs-progs: get_fsid_fd() for getting fsid using fd Goldwyn Rodrigues
2020-08-25 15:03 ` [PATCH 2/4] btrfs-progs: add sysfs file reading functions Goldwyn Rodrigues
2020-08-25 15:03 ` [PATCH 3/4] btrfs-progs: Check for exclusive operation before issuing ioctl Goldwyn Rodrigues
2020-08-25 15:03 ` [PATCH 4/4] btrfs-progs: Enqueue command if it can't be performed immediately Goldwyn Rodrigues
2020-09-02 14:11 ` David Sterba
2020-09-02 20:45 ` Goldwyn Rodrigues
2020-09-02 20:11 ` [PATCH v3 0/2] btrfs: Enumerate and export exclusive operations David Sterba
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