From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
To: Jingyun He <jingyun.ho@gmail.com>,
linux-btrfs@vger.kernel.org, Naohiro Aota <Naohiro.Aota@wdc.com>,
Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
Subject: Re: seagate hm-smr issue
Date: Mon, 27 Sep 2021 08:13:22 +0900 [thread overview]
Message-ID: <b57cace4-fc85-2a5f-e88b-d056b12a2a0b@opensource.wdc.com> (raw)
In-Reply-To: <CAHQ7scUiLtcTqZOMMY5kbWUBOhGRwKo6J6wYPT5WY+C=cD49nQ@mail.gmail.com>
On 2021/09/26 22:57, Jingyun He wrote:
> Hello,
> Btrfs works very well on WD/HGST disks, we got some Seagate HM-SMR
> disks recently, model number is ST14000NM0428,
> mkfs.btrfs works fine, and I can mount it, and push data into disk.
> once we used up the capacity, and umount it. then we are unable to
> re-mount it again.
> The mount process will never end, the process just hangs there.
>
> Anybody can help me with this?
+Naohiro and Johannes
This is not a hang. Mount will just take a looooong time due to an inefficiency
in how block groups are checked: a single zone report zone command is issued per
block group, so with a disk almost full, that takes a long time (75000+zones
checked one by one). Naohiro is working on a fix for this.
>
> Thanks.
>
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2021-09-26 23:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-26 13:57 seagate hm-smr issue Jingyun He
2021-09-26 23:13 ` Damien Le Moal [this message]
2021-09-26 23:42 ` Jingyun He
2021-09-27 0:07 ` Damien Le Moal
2021-12-27 17:46 ` Jingyun He
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