From: "Lakshmipathi.G" <lakshmipathi.g@giis.co.in>
To: linux-btrfs@vger.kernel.org
Subject: How to dump/find parity of RAID-5 file?
Date: Fri, 3 Feb 2017 16:14:06 +0530 [thread overview]
Message-ID: <20170203104406.GA3670@giis.co.in> (raw)
Hi.
Came across this thread https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg55161.html
Exploring possibility of adding test-scripts around these area using dump-tree & corrupt-block.But
unable to figure-out how to get parity of file or find its location. dump-tree output gave,
item 5 key (FIRST_CHUNK_TREE CHUNK_ITEM 145096704) itemoff 15557 itemsize 144
length 134217728 owner 2 stripe_len 65536 type DATA|RAID5
io_align 65536 io_width 65536 sector_size 4096
num_stripes 3 sub_stripes 0
stripe 0 devid 3 offset 63111168 # Is this parity?Seems empty?
dev_uuid f62df114-186c-4e48-8152-9ed15aa078b4
stripe 1 devid 2 offset 63111168 # Contains file data-stripe-1
dev_uuid c0aeaab0-e57e-4f7a-9356-db1878876d9f
stripe 2 devid 1 offset 83034112 # Contains file data-stripe-2
dev_uuid 637b3666-9d8f-4ec4-9969-53b0b933b9b1
thanks.
Cheers.
Lakshmipathi.G
next reply other threads:[~2017-02-03 10:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-03 10:44 Lakshmipathi.G [this message]
2017-02-06 20:40 ` How to dump/find parity of RAID-5 file? Goffredo Baroncelli
2017-02-14 20:09 ` Lakshmipathi.G
2017-02-15 18:24 ` Goffredo Baroncelli
2017-02-16 15:14 ` Lakshmipathi.G
2018-04-17 19:20 ` Goffredo Baroncelli
[not found] ` <8c5cece7-29cf-82df-0739-ef4f0fe8bf70@cn.fujitsu.com>
2017-02-14 20:06 ` Lakshmipathi.G
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