questions about flush data to disk.

questions about flush data to disk.

[Michael]

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Dear SGI,

 

I¡¯m trying to backup XFS partition SUSE 12 with XFS_PROGS 3.2.1, when we do
snapshot of the partition. The created snapshot always have problem by run
¡°xfs_repair ¨Cn /dev/VG/snapshot¡±. I have tried ¡°sync¡± didn¡¯t flush
cache to disk. Then tried to umount and mount the XFS partition the snapshot
looks fine. Can you tell me another way to force XFS flush cached data to
disk? 

 

Best Regards

Michael(Ning)Wang

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RE: questions about flush data to disk.

[Troy McCorkell]

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Michael,

SGI is no longer the maintainer for XFS in the open source community.  XFS is maintained by Dave Chinner
and developed and enhanced by a large community of contributors.

Reference the manpage for the xfs_freeze command to help stabilizing your filesystem before
generating a snapshot.   Quoting the manpage, "xfs_freeze is intended to be
used with volume managers and hardware RAID devices that support the creation of snapshots."

Thanks,
Troy McCorkell

________________________________
From: xfs-bounces@oss.sgi.com [xfs-bounces@oss.sgi.com] on behalf of Michael [ning_wang@asdc.com.cn]
Sent: Monday, June 13, 2016 8:50 PM
To: xfs@oss.sgi.com
Subject: questions about flush data to disk.

Dear SGI,

I’m trying to backup XFS partition SUSE 12 with XFS_PROGS 3.2.1, when we do snapshot of the partition. The created snapshot always have problem by run “xfs_repair –n /dev/VG/snapshot”. I have tried “sync” didn’t flush cache to disk. Then tried to umount and mount the XFS partition the snapshot looks fine. Can you tell me another way to force XFS flush cached data to disk?

Best Regards
Michael(Ning)Wang
-----------------------------------------------------------------------------------------------------------------------
[?明: cid:_Foxmail.1@95d58f00-9e62-93f7-6199-b1696cc80320]
ADVANCED SYSTEMS DEVELOPMENT CO.,LTD.
3/F DASCOM Mansion, 9# East Road Shangdi, Haidian, Beijing, 100085
Tel：010-62981691-1234, 010-62980000, 010-82780000
Fax：010-62981258
E-mail：ning_wang@asdc.com.cn<mailto:ning_wang@asdc.com.cn>
Http：www.asdc.com.cn<http://www.asdc.com.cn/>
[?明: cid:_Foxmail.1@e1a38f84-0fa5-04a6-9e7c-c5842b6ca2fa]


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