Thomas,
This is expected, but it's also something we'd like to fix - See LU-9341. Basically, append tries to instantiate the layout from 0 to infinity, and it fails because your layout is incomplete (ie doesn't go to infinity). May I ask why you're creating a file with an incomplete layout? Do you have a use case in mind? - Patrick ________________________________ From: lustre-discuss <[email protected]> on behalf of LEIBOVICI Thomas <[email protected]> Sent: Friday, February 22, 2019 10:27:48 AM To: [email protected] Subject: [lustre-discuss] EINVAL error when writing to a PFL file (lustre 2.12.0) Hello, Is it expected to get an error when appending a PFL file made of 2 regions [0 - 1M] and [1M to 6M] even if writing in this range? I get an error when appending it, even when writting in the very first bytes: [root@vm0]# lfs setstripe -E 1M -c 1 -E 6M -c 2 /mnt/lustre/m_fou3 [root@vm0]# lfs getstripe /mnt/lustre/m_fou3 /mnt/lustre/m_fou3 lcm_layout_gen: 2 lcm_mirror_count: 1 lcm_entry_count: 2 lcme_id: 1 lcme_mirror_id: 0 lcme_flags: init lcme_extent.e_start: 0 lcme_extent.e_end: 1048576 lmm_stripe_count: 1 lmm_stripe_size: 1048576 lmm_pattern: raid0 lmm_layout_gen: 0 lmm_stripe_offset: 3 lmm_objects: - 0: { l_ost_idx: 3, l_fid: [0x100030000:0x9cf:0x0] } lcme_id: 2 lcme_mirror_id: 0 lcme_flags: 0 lcme_extent.e_start: 1048576 lcme_extent.e_end: 6291456 lmm_stripe_count: 2 lmm_stripe_size: 1048576 lmm_pattern: raid0 lmm_layout_gen: 0 lmm_stripe_offset: -1 [root@vm0]# stat -c %s /mnt/lustre/m_fou3 14 * append fails: [root@vm0]# echo qsdkjqslkdjkj >> /mnt/lustre/m_fou3 bash: echo: write error: Invalid argument # strace indicates that write() gets the error: write(1, "qsdkjqslkdjkj\n", 14) = -1 EINVAL (Invalid argument) * no error in case of an open/truncate: [root@vm0]# echo qsdkjqslkdjkj > /mnt/lustre/m_fou3 OK Is it expected or should I open a ticket? Thomas _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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