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Date: Tue, 4 Jan 2022 22:14:36 -0500 From: "Theodore Ts'o" <tytso@....edu> To: Jan Kara <jack@...e.cz> Cc: "Theodore Ts'o" <tytso@....edu>, Lukas Czerner <lczerner@...hat.com>, linux-ext4@...r.kernel.org Subject: Re: [PATCH] ext4: Avoid trim error on fs with small groups On Fri, 12 Nov 2021 16:22:02 +0100, Jan Kara wrote: > A user reported FITRIM ioctl failing for him on ext4 on some devices > without apparent reason. After some debugging we've found out that > these devices (being LVM volumes) report rather large discard > granularity of 42MB and the filesystem had 1k blocksize and thus group > size of 8MB. Because ext4 FITRIM implementation puts discard > granularity into minlen, ext4_trim_fs() declared the trim request as > invalid. However just silently doing nothing seems to be a more > appropriate reaction to such combination of parameters since user did > not specify anything wrong. > > [...] Applied, thanks! [1/1] ext4: Avoid trim error on fs with small groups commit: a4934e25c01ed056dc4af8bef086616e3b083a14 Best regards, -- Theodore Ts'o <tytso@....edu>
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