From: bugzilla-daemon@kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 217965] ext4(?) regression since 6.5.0 on sata hdd
Date: Sat, 23 Dec 2023 15:47:13 +0000 [thread overview]
Message-ID: <bug-217965-13602-zpf1S2I81X@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-217965-13602@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=217965
--- Comment #51 from carlos@fisica.ufpr.br ---
bugzilla-daemon@kernel.org (bugzilla-daemon@kernel.org) wrote on Fri, Dec 22,
2023 at 10:48:39PM -03:
> https://bugzilla.kernel.org/show_bug.cgi?id=217965
>
> Andreas Dilger (adilger.kernelbugzilla@dilger.ca) changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |adilger.kernelbugzilla@dilg
> | |er.ca
>
> --- Comment #48 from Andreas Dilger (adilger.kernelbugzilla@dilger.ca) ---
> Independent of the fixes to the mballoc code to improve the allocation
> performance, I'm wondering about the ''RAID stride'' values in use here.
> The "stride" value is intended to be the size of one complete set of
> disks (e.g. 128KiB chunk size * 8 data disks = 1MiB). The filesystem
> doesn't see the parity disks, so the number of those disks does not
> matter to ext4.
>
> It seems in all these cases that the stripe/stride is strange. I can't
> see any value to setting stride to (almost) 128MB, especially not on a
> RAID-1 system. Were these values automatically generated by mke2fs,
> or entered manually? If manually, why was that value chosen? If there
> is something unclear in the documentation it should be fixed, and the
> same if there is something wrong in mke2fs detection of the geometry.
>
> > By default the FS is mounted with stripe=1280 because it's on a raid6.
> > Remounting with stripe=0 works around the problem. Excellent!
>
> Carlos, how many data disks in this system? Do you have 5x 256KiB or
> 10x 128KiB *data* disks, plus 2 *parity* disks?
There are 10 data disks. The stride, determined automatically by mke2fs, is
correct since the chunk is 512KiB.
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next prev parent reply other threads:[~2023-12-23 15:47 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-02 8:10 [Bug 217965] New: ext4(?) regression since 6.5.0 on sata hdd bugzilla-daemon
2023-10-02 8:52 ` [Bug 217965] " bugzilla-daemon
2023-10-02 8:56 ` bugzilla-daemon
2023-10-02 8:57 ` bugzilla-daemon
2023-10-02 15:22 ` bugzilla-daemon
2023-10-02 15:55 ` bugzilla-daemon
2023-10-03 6:50 ` bugzilla-daemon
2023-10-03 6:57 ` bugzilla-daemon
2023-10-03 11:04 ` bugzilla-daemon
2023-10-03 13:42 ` bugzilla-daemon
2023-10-03 14:23 ` bugzilla-daemon
2023-10-04 12:44 ` bugzilla-daemon
2023-10-04 17:23 ` bugzilla-daemon
2023-10-11 7:53 ` bugzilla-daemon
2023-10-11 16:07 ` bugzilla-daemon
2023-10-11 22:23 ` bugzilla-daemon
2023-10-17 10:45 ` bugzilla-daemon
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2023-10-20 10:24 ` bugzilla-daemon
2023-10-21 10:07 ` bugzilla-daemon
2023-11-13 22:46 ` bugzilla-daemon
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2023-11-14 8:22 ` bugzilla-daemon
2023-11-14 10:29 ` bugzilla-daemon
2023-11-15 4:06 ` bugzilla-daemon
2023-11-15 17:27 ` bugzilla-daemon
2023-11-15 22:39 ` bugzilla-daemon
2023-11-16 3:15 ` bugzilla-daemon
2023-11-16 4:05 ` bugzilla-daemon
2023-11-16 4:31 ` bugzilla-daemon
2023-11-16 4:33 ` bugzilla-daemon
2023-11-16 19:33 ` bugzilla-daemon
2023-11-17 0:01 ` bugzilla-daemon
2023-11-17 0:44 ` bugzilla-daemon
2023-11-17 1:39 ` bugzilla-daemon
2023-11-17 1:40 ` bugzilla-daemon
2023-11-17 15:39 ` bugzilla-daemon
2023-11-17 23:52 ` bugzilla-daemon
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2023-11-17 23:57 ` bugzilla-daemon
2023-11-18 12:10 ` bugzilla-daemon
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2023-11-20 6:11 ` bugzilla-daemon
2023-11-20 8:48 ` bugzilla-daemon
2023-11-27 17:31 ` bugzilla-daemon
2023-12-03 7:33 ` bugzilla-daemon
2023-12-15 11:27 ` bugzilla-daemon
2023-12-23 0:56 ` bugzilla-daemon
2023-12-23 1:48 ` bugzilla-daemon
2023-12-23 12:46 ` bugzilla-daemon
2023-12-23 14:22 ` bugzilla-daemon
2023-12-23 15:47 ` bugzilla-daemon [this message]
2023-12-29 20:35 ` bugzilla-daemon
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2024-01-04 5:38 ` bugzilla-daemon
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2024-01-06 3:18 ` bugzilla-daemon
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2024-02-07 11:44 ` bugzilla-daemon
2024-03-12 20:27 ` bugzilla-daemon
2024-03-17 11:58 ` bugzilla-daemon
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2024-03-23 8:53 ` bugzilla-daemon
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