From: David Teigland <teigland@redhat.com>
To: lvm-devel@redhat.com
Subject: [PATCH] pvscan --cache /dev/xx needs to scan all disks and aliases when enable device filter
Date: Wed, 7 Dec 2022 09:29:36 -0600 [thread overview]
Message-ID: <20221207152936.GA12874@redhat.com> (raw)
In-Reply-To: <971ecec87dad4fe2a1771f3c75c5cffb@huawei.com>
On Wed, Dec 07, 2022 at 09:34:13AM +0000, wangzhiqiang (Q) wrote:
> When the system restarts and the disk goes online, the udev rule will be triggered to scan the metadata on
> the disk to automatically activate the logical volume, If we specify the scanned disk alias in lvm.conf, reject
> other unspecified disks, then lv cannot activate since the aliases mismatch with disk name.
>
> If device filtering is configured in lvm.conf, then pvscan --cache /dev/xx needs to scan all disks and aliases
Hi, if I understand correctly, pvscan is already attempting to handle this
case. See the use of "_filter_uses_symlinks" in pvscan.c. Perhaps it
needs check for other symlink substrings? The problem with your patch is
that it's a significant performance penalty for a common configuration.
Dave
next prev parent reply other threads:[~2022-12-07 15:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-07 9:34 [PATCH] pvscan --cache /dev/xx needs to scan all disks and aliases when enable device filter wangzhiqiang
2022-12-07 15:29 ` David Teigland [this message]
2022-12-09 1:27 ` 答复: " wangzhiqiang
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