From: Goffredo Baroncelli <kreijack@inwind.it>
To: Anand Jain <anand.jain@oracle.com>, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 00/15] btrfs: Hot spare and Auto replace
Date: Thu, 12 Nov 2015 20:21:25 +0100 [thread overview]
Message-ID: <5644E6B5.9070405@inwind.it> (raw)
In-Reply-To: <1447066589-3835-1-git-send-email-anand.jain@oracle.com>
On 2015-11-09 11:56, Anand Jain wrote:
> These set of patches provides btrfs hot spare and auto replace support
> for you review and comments.
Hi Anand,
is there any reason to put this kind of logic in the kernel space ? I think that it could be more simply to create a daemon which checks the disks and when needed it starts a replace...
The pool policy could be more sophisticated: some filesystem could require a "dedicated" pool (for example because the disks are in the same enclosure); in other case a global pool may be more useful.
Another feature of this daemon could be to add a disk when the disk space is too low, or to start a balance when there is no space to allocate further chunk.....
Of course all these logic could be implemented in kernel space, but I think that we should avoid that when possible. Moreover in user space the logging is more easy....
Only my 2¢...
BR
G.Baroncelli
[...]
--
gpg @keyserver.linux.it: Goffredo Baroncelli <kreijackATinwind.it>
Key fingerprint BBF5 1610 0B64 DAC6 5F7D 17B2 0EDA 9B37 8B82 E0B5
next prev parent reply other threads:[~2015-11-12 19:21 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-09 10:56 [PATCH 00/15] btrfs: Hot spare and Auto replace Anand Jain
2015-11-09 10:56 ` [PATCH 01/15] btrfs: Introduce a new function to check if all chunks a OK for degraded mount Anand Jain
2015-11-09 10:56 ` [PATCH 02/15] btrfs: Do per-chunk check for mount time check Anand Jain
2015-11-09 10:56 ` [PATCH 03/15] btrfs: Do per-chunk degraded check for remount Anand Jain
2015-11-09 10:56 ` [PATCH 04/15] btrfs: Allow barrier_all_devices to do per-chunk device check Anand Jain
2015-11-09 10:56 ` [PATCH 05/15] btrfs: optimize btrfs_check_degradable() for calls outside of barrier Anand Jain
2015-11-09 10:56 ` [PATCH 06/15] btrfs: Cleanup num_tolerated_disk_barrier_failures Anand Jain
2015-12-05 7:16 ` Qu Wenruo
2015-11-09 10:56 ` [PATCH 07/15] btrfs: introduce device dynamic state transition to offline or failed Anand Jain
2015-11-09 10:56 ` [PATCH 08/15] btrfs: check device for critical errors and mark failed Anand Jain
2015-11-09 10:56 ` [PATCH 09/15] btrfs: block incompatible optional features at scan Anand Jain
2015-11-09 10:56 ` [PATCH 10/15] btrfs: introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV Anand Jain
2015-11-09 10:56 ` [PATCH 11/15] btrfs: add check not to mount a spare device Anand Jain
2015-11-09 10:56 ` [PATCH 12/15] btrfs: support btrfs dev scan for " Anand Jain
2015-11-09 10:56 ` [PATCH 13/15] btrfs: provide framework to get and put a " Anand Jain
2015-11-09 10:56 ` [PATCH 14/15] btrfs: introduce helper functions to perform hot replace Anand Jain
2015-11-09 10:56 ` [PATCH 15/15] btrfs: check for failed device and " Anand Jain
2015-11-09 10:58 ` [PATCH 0/4] btrfs-progs: Hot spare and Auto replace Anand Jain
2015-11-09 10:58 ` [PATCH 1/4] btrfs-progs: Introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV SB flags Anand Jain
2015-11-09 10:58 ` [PATCH 2/4] btrfs-progs: Introduce btrfs spare subcommand Anand Jain
2015-11-09 10:58 ` [PATCH 3/4] btrfs-progs: add fi show for spare Anand Jain
2015-11-09 10:58 ` [PATCH 4/4] btrfs-progs: add global spare device list to filesystem show Anand Jain
2015-11-09 14:09 ` [PATCH 00/15] btrfs: Hot spare and Auto replace Austin S Hemmelgarn
2015-11-09 21:29 ` Duncan
2015-11-10 12:13 ` Austin S Hemmelgarn
2015-11-13 10:17 ` Anand Jain
2015-11-13 12:25 ` Austin S Hemmelgarn
2015-11-15 18:10 ` Christoph Anton Mitterer
2015-11-12 2:15 ` Qu Wenruo
2015-11-12 6:46 ` Duncan
2015-11-12 13:04 ` Austin S Hemmelgarn
2015-11-13 1:07 ` Qu Wenruo
2015-11-13 10:20 ` Anand Jain
2015-11-14 0:54 ` Qu Wenruo
2015-11-16 13:39 ` Austin S Hemmelgarn
2015-11-12 19:08 ` Goffredo Baroncelli
2015-11-13 10:18 ` Anand Jain
2015-11-12 19:21 ` Goffredo Baroncelli [this message]
2015-11-13 10:20 ` Anand Jain
2015-11-14 11:05 ` Goffredo Baroncelli
2015-11-16 13:41 ` Austin S Hemmelgarn
2015-11-16 22:07 ` Anand Jain
2015-11-17 12:28 ` Austin S Hemmelgarn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5644E6B5.9070405@inwind.it \
--to=kreijack@inwind.it \
--cc=anand.jain@oracle.com \
--cc=linux-btrfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.